Vergleich inc/db_pgsql.php - 1.8.3 - 1.8.38

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 *
*/


 *
*/


class DB_PgSQL

class DB_PgSQL implements DB_Base

{
/**
* The title of this layer.

{
/**
* The title of this layer.

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	 * @var string
*/
public $short_title = "PostgreSQL";

	 * @var string
*/
public $short_title = "PostgreSQL";

 

/**
* The type of db software being used.
*
* @var string
*/
public $type;


/**
* A count of the number of queries.


/**
* A count of the number of queries.

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	 * @var boolean
*/
public $error_reporting = 1;

	 * @var boolean
*/
public $error_reporting = 1;





	/**
* The read database connection resource.

	/**
* The read database connection resource.

	 *
* @var resource

	 *
* @var resource

	 */
public $read_link;

	 */
public $read_link;


/**


/**

	 * The write database connection resource

	 * The write database connection resource

	 *
* @var resource
*/

	 *
* @var resource
*/

	public $write_link;

/**
* Reference to the last database connection resource used.

	public $write_link;

/**
* Reference to the last database connection resource used.

	 *
* @var resource
*/

	 *
* @var resource
*/

	public $current_link;

	public $current_link;


/**







/**
* @var array
*/
public $connections = array();

/**

	 * Explanation of a query.

	 * Explanation of a query.

	 *

	 *

	 * @var string
*/
public $explain;

	 * @var string
*/
public $explain;


/**


/**

	 * The current version of PgSQL.
*
* @var string

	 * The current version of PgSQL.
*
* @var string

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/**
* The current table type in use (myisam/innodb)


/**
* The current table type in use (myisam/innodb)

	 *
* @var string

	 *
* @var string

	 */
public $table_type = "myisam";


	 */
public $table_type = "myisam";


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	 * @var string
*/
public $engine = "pgsql";

	 * @var string
*/
public $engine = "pgsql";





	/**
* Weather or not this engine can use the search functionality
*

	/**
* Weather or not this engine can use the search functionality
*

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	/**
* Connect to the database server.
*

	/**
* Connect to the database server.
*

	 * @param array Array of DBMS connection details.

	 * @param array $config Array of DBMS connection details.

	 * @return resource The DB connection resource. Returns false on failure
*/
function connect($config)

	 * @return resource The DB connection resource. Returns false on failure
*/
function connect($config)

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			}
}


			}
}


		$this->db_encoding = $config['encoding'];




		if(isset($config['encoding']))
{
$this->db_encoding = $config['encoding'];
}


// Actually connect to the specified servers
foreach(array('read', 'write') as $type)


// Actually connect to the specified servers
foreach(array('read', 'write') as $type)

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			if(array_key_exists('hostname', $connections[$type]))
{
$details = $connections[$type];

			if(array_key_exists('hostname', $connections[$type]))
{
$details = $connections[$type];

				unset($connections);

				unset($connections[$type]);

				$connections[$type][] = $details;
}


				$connections[$type][] = $details;
}


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				if(strpos($single_connection['hostname'], ':') !== false)
{
list($single_connection['hostname'], $single_connection['port']) = explode(':', $single_connection['hostname']);

				if(strpos($single_connection['hostname'], ':') !== false)
{
list($single_connection['hostname'], $single_connection['port']) = explode(':', $single_connection['hostname']);

 
				}
else
{
$single_connection['port'] = null;

				}

if($single_connection['port'])

				}

if($single_connection['port'])

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				{
$this->connections[] = "<span style=\"color: red\">[FAILED] [".strtoupper($type)."] {$single_connection['username']}@{$single_connection['hostname']}</span>";
}

				{
$this->connections[] = "<span style=\"color: red\">[FAILED] [".strtoupper($type)."] {$single_connection['username']}@{$single_connection['hostname']}</span>";
}

			}

			}

		}

// No write server was specified (simple connection or just multiple servers) - mirror write link

		}

// No write server was specified (simple connection or just multiple servers) - mirror write link

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/**
* Query the database.


/**
* Query the database.

	 *
* @param string The query SQL.
* @param boolean 1 if hide errors, 0 if not.
* @param integer 1 if executes on slave database, 0 if not.
* @return resource The query data.
*/

	 *
* @param string $string The query SQL.
* @param boolean|int $hide_errors 1 if hide errors, 0 if not.
* @param integer $write_query 1 if executes on slave database, 0 if not.
* @return resource The query data.
*/

	function query($string, $hide_errors=0, $write_query=0)
{

	function query($string, $hide_errors=0, $write_query=0)
{

		global $pagestarttime, $db, $mybb;

$string = preg_replace("#LIMIT (\s*)([0-9]+),(\s*)([0-9]+)$#im", "LIMIT $4 OFFSET $2", trim($string));

$this->last_query = $string;

		global $mybb;

$string = preg_replace("#LIMIT (\s*)([0-9]+),(\s*)([0-9]+);?$#im", "LIMIT $4 OFFSET $2", trim($string));

$this->last_query = $string;


get_execution_time();



get_execution_time();


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			{
$string = str_replace(' CHANGE ', ' ALTER ', $string);
}

			{
$string = str_replace(' CHANGE ', ' ALTER ', $string);
}

		}

		}


if($write_query && $this->write_link)
{
while(pg_connection_busy($this->write_link));
$this->current_link = &$this->write_link;


if($write_query && $this->write_link)
{
while(pg_connection_busy($this->write_link));
$this->current_link = &$this->write_link;

			pg_send_query($this->current_link, $string);

			pg_send_query($this->current_link, $string);

			$query = pg_get_result($this->current_link);
}
else

			$query = pg_get_result($this->current_link);
}
else

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			$this->current_link = &$this->read_link;
pg_send_query($this->current_link, $string);
$query = pg_get_result($this->current_link);

			$this->current_link = &$this->read_link;
pg_send_query($this->current_link, $string);
$query = pg_get_result($this->current_link);

		}

		}


if((pg_result_error($query) && !$hide_errors))
{


if((pg_result_error($query) && !$hide_errors))
{

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	/**
* Execute a write query on the slave database
*

	/**
* Execute a write query on the slave database
*

	 * @param string The query SQL.
* @param boolean 1 if hide errors, 0 if not.

	 * @param string $query The query SQL.
* @param boolean|int $hide_errors 1 if hide errors, 0 if not.

	 * @return resource The query data.
*/
function write_query($query, $hide_errors=0)
{
return $this->query($query, $hide_errors, 1);

	 * @return resource The query data.
*/
function write_query($query, $hide_errors=0)
{
return $this->query($query, $hide_errors, 1);

	}

/**

	}

/**

	 * Explain a query on the database.
*

	 * Explain a query on the database.
*

	 * @param string The query SQL.
* @param string The time it took to perform the query.

	 * @param string $string The query SQL.
* @param string $qtime The time it took to perform the query.

	 */
function explain_query($string, $qtime)
{

	 */
function explain_query($string, $qtime)
{

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	/**
* Return a result array for a query.
*

	/**
* Return a result array for a query.
*

	 * @param resource The query ID.
* @param constant The type of array to return.
* @return array The array of results.

	 * @param resource $query The query ID.
* @param int $resulttype The type of array to return. Either PGSQL_NUM, PGSQL_BOTH or PGSQL_ASSOC
* @return array The array of results. Note that all fields are returned as string: http://php.net/manual/en/function.pg-fetch-array.php

	 */
function fetch_array($query, $resulttype=PGSQL_ASSOC)

	 */
function fetch_array($query, $resulttype=PGSQL_ASSOC)

	{

	{

		switch($resulttype)
{
case PGSQL_NUM:

		switch($resulttype)
{
case PGSQL_NUM:

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	/**
* Return a specific field from a query.
*

	/**
* Return a specific field from a query.
*

	 * @param resource The query ID.
* @param string The name of the field to return.
* @param int The number of the row to fetch it from.


	 * @param resource $query The query ID.
* @param string $field The name of the field to return.
* @param int|bool The number of the row to fetch it from.
* @return string|bool|null As per http://php.net/manual/en/function.pg-fetch-result.php

	 */
function fetch_field($query, $field, $row=false)
{
if($row === false)
{
$array = $this->fetch_array($query);

	 */
function fetch_field($query, $field, $row=false)
{
if($row === false)
{
$array = $this->fetch_array($query);

			return $array[$field];





			if($array !== null && $array !== false)
{
return $array[$field];
}
return null;

		}

		}

		else
{
return pg_fetch_result($query, $row, $field);
}
}

/**


return pg_fetch_result($query, $row, $field);
}

/**



	 * Moves internal row pointer to the next row
*

	 * Moves internal row pointer to the next row
*

	 * @param resource The query ID.
* @param int The pointer to move the row to.


	 * @param resource $query The query ID.
* @param int $row The pointer to move the row to.
* @return bool

	 */
function data_seek($query, $row)
{
return pg_result_seek($query, $row);

	 */
function data_seek($query, $row)
{
return pg_result_seek($query, $row);

	}

/**

	}

/**

	 * Return the number of rows resulting from a query.

	 * Return the number of rows resulting from a query.

	 *
* @param resource The query ID.

	 *
* @param resource $query The query ID.

	 * @return int The number of rows in the result.

	 * @return int The number of rows in the result.

	 */

	 */

	function num_rows($query)

	function num_rows($query)

	{

	{

		return pg_num_rows($query);
}

		return pg_num_rows($query);
}





	/**
* Return the last id number of inserted data.
*
* @return int The id number.
*/
function insert_id()

	/**
* Return the last id number of inserted data.
*
* @return int The id number.
*/
function insert_id()

	{
$this->last_query = str_replace(array("\r", "\t"), '', $this->last_query);
$this->last_query = str_replace("\n", ' ', $this->last_query);
preg_match('#INSERT INTO ([a-zA-Z0-9_\-]+)#i', $this->last_query, $matches);

$table = $matches[1];


	{
preg_match('#INSERT\s+INTO\s+([a-zA-Z0-9_\-]+)#i', $this->last_query, $matches);

$table = $matches[1];




		$query = $this->query("SELECT column_name FROM information_schema.constraint_column_usage WHERE table_name = '{$table}' and constraint_name = '{$table}_pkey' LIMIT 1");
$field = $this->fetch_field($query, 'column_name');

// Do we not have a primary field?
if(!$field)
{

		$query = $this->query("SELECT column_name FROM information_schema.constraint_column_usage WHERE table_name = '{$table}' and constraint_name = '{$table}_pkey' LIMIT 1");
$field = $this->fetch_field($query, 'column_name');

// Do we not have a primary field?
if(!$field)
{

			return;

			return 0;

		}

$id = $this->write_query("SELECT currval(pg_get_serial_sequence('{$table}', '{$field}')) AS last_value");

		}

$id = $this->write_query("SELECT currval(pg_get_serial_sequence('{$table}', '{$field}')) AS last_value");

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	/**
* Return an error number.
*

	/**
* Return an error number.
*

 
	 * @param resource $query

	 * @return int The error number of the current error.
*/

	 * @return int The error number of the current error.
*/

	function error_number($query="")

	function error_number($query=null)

	{

	{

		if(!$query || !function_exists("pg_result_error_field"))

		if($query != null || !function_exists("pg_result_error_field"))

		{
return 0;
}

return pg_result_error_field($query, PGSQL_DIAG_SQLSTATE);

		{
return 0;
}

return pg_result_error_field($query, PGSQL_DIAG_SQLSTATE);

	}


	}


	/**
* Return an error string.
*

	/**
* Return an error string.
*

 
	 * @param resource $query

	 * @return string The explanation for the current error.
*/

	 * @return string The explanation for the current error.
*/

	function error_string($query="")

	function error_string($query=null)

	{

	{

		if($query)

		if($query != null)

		{
return pg_result_error($query);

		{
return pg_result_error($query);

		}


		}


		if($this->current_link)
{
return pg_last_error($this->current_link);

		if($this->current_link)
{
return pg_last_error($this->current_link);

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		else
{
return pg_last_error();

		else
{
return pg_last_error();

		}
}


		}
}


	/**
* Output a database error.
*

	/**
* Output a database error.
*

	 * @param string The string to present as an error.


	 * @param string $string The string to present as an error.
* @param resource $query

	 */

	 */

	function error($string="", $query="")

	function error($string="", $query=null)

	{
if($this->error_reporting)
{

	{
if($this->error_reporting)
{

Zeile 592Zeile 616
	/**
* Return the number of fields.
*

	/**
* Return the number of fields.
*

	 * @param resource The query ID.

	 * @param resource $query The query ID.

	 * @return int The number of fields.
*/
function num_fields($query)

	 * @return int The number of fields.
*/
function num_fields($query)

Zeile 601Zeile 625
	}

/**

	}

/**

	 * Lists all functions in the database.

	 * Lists all tables in the database.

	 *

	 *

	 * @param string The database name.
* @param string Prefix of the table (optional)

	 * @param string $database The database name.
* @param string $prefix Prefix of the table (optional)

	 * @return array The table list.
*/
function list_tables($database, $prefix='')
{
if($prefix)

	 * @return array The table list.
*/
function list_tables($database, $prefix='')
{
if($prefix)

		{

		{

			$query = $this->query("SELECT table_name FROM information_schema.tables WHERE table_schema='public' AND table_name LIKE '".$this->escape_string($prefix)."%'");

			$query = $this->query("SELECT table_name FROM information_schema.tables WHERE table_schema='public' AND table_name LIKE '".$this->escape_string($prefix)."%'");

		}

		}

		else

		else

		{

		{

			$query = $this->query("SELECT table_name FROM information_schema.tables WHERE table_schema='public'");

			$query = $this->query("SELECT table_name FROM information_schema.tables WHERE table_schema='public'");

		}


		}


		$tables = array();
while($table = $this->fetch_array($query))
{

		$tables = array();
while($table = $this->fetch_array($query))
{

Zeile 629Zeile 653

/**
* Check if a table exists in a database.


/**
* Check if a table exists in a database.

	 *
* @param string The table name.
* @return boolean True when exists, false if not.

	 *
* @param string $table The table name.
* @return boolean True when exists, false if not.

	 */
function table_exists($table)
{
// Execute on master server to ensure if we've just created a table that we get the correct result
$query = $this->write_query("SELECT COUNT(table_name) as table_names FROM information_schema.tables WHERE table_schema = 'public' AND table_name='{$this->table_prefix}{$table}'");

	 */
function table_exists($table)
{
// Execute on master server to ensure if we've just created a table that we get the correct result
$query = $this->write_query("SELECT COUNT(table_name) as table_names FROM information_schema.tables WHERE table_schema = 'public' AND table_name='{$this->table_prefix}{$table}'");





		$exists = $this->fetch_field($query, 'table_names');

		$exists = $this->fetch_field($query, 'table_names');


if($exists > 0)
{
return true;
}
else
{
return false;
}
}

/**


if($exists > 0)
{
return true;
}
else
{
return false;
}
}

/**

	 * Check if a field exists in a database.
*

	 * Check if a field exists in a database.
*

	 * @param string The field name.
* @param string The table name.

	 * @param string $field The field name.
* @param string $table The table name.

	 * @return boolean True when exists, false if not.
*/
function field_exists($field, $table)
{
$query = $this->write_query("SELECT COUNT(column_name) as column_names FROM information_schema.columns WHERE table_name='{$this->table_prefix}{$table}' AND column_name='{$field}'");

	 * @return boolean True when exists, false if not.
*/
function field_exists($field, $table)
{
$query = $this->write_query("SELECT COUNT(column_name) as column_names FROM information_schema.columns WHERE table_name='{$this->table_prefix}{$table}' AND column_name='{$field}'");





		$exists = $this->fetch_field($query, "column_names");

if($exists > 0)

		$exists = $this->fetch_field($query, "column_names");

if($exists > 0)

Zeile 670Zeile 694
		else
{
return false;

		else
{
return false;

		}
}


		}
}


	/**
* Add a shutdown query.
*

	/**
* Add a shutdown query.
*

	 * @param resource The query data.
* @param string An optional name for the query.

	 * @param resource $query The query data.
* @param string $name An optional name for the query.

	 */

	 */

	function shutdown_query($query, $name=0)

	function shutdown_query($query, $name="")

	{
global $shutdown_queries;
if($name)

	{
global $shutdown_queries;
if($name)

		{

		{

			$shutdown_queries[$name] = $query;

			$shutdown_queries[$name] = $query;

		}

		}

		else
{
$shutdown_queries[] = $query;

		else
{
$shutdown_queries[] = $query;

Zeile 694Zeile 718

/**
* Performs a simple select query.


/**
* Performs a simple select query.

	 *
* @param string The table name to be queried.
* @param string Comma delimetered list of fields to be selected.
* @param string SQL formatted list of conditions to be matched.
* @param array List of options: group by, order by, order direction, limit, limit start.

	 *
* @param string $table The table name to be queried.
* @param string $fields Comma delimetered list of fields to be selected.
* @param string $conditions SQL formatted list of conditions to be matched.
* @param array $options List of options: group by, order by, order direction, limit, limit start.

	 * @return resource The query data.
*/
function simple_select($table, $fields="*", $conditions="", $options=array())

	 * @return resource The query data.
*/
function simple_select($table, $fields="*", $conditions="", $options=array())

Zeile 738Zeile 762
	/**
* Build an insert query from an array.
*

	/**
* Build an insert query from an array.
*

	 * @param string The table name to perform the query on.
* @param array An array of fields and their values.
* @param boolean Whether or not to return an insert id. True by default
* @return int The insert ID if available

	 * @param string $table The table name to perform the query on.
* @param array $array An array of fields and their values.
* @param boolean $insert_id Whether or not to return an insert id. True by default
* @return int|bool The insert ID if available. False on failure and true if $insert_id is false

	 */
function insert_query($table, $array, $insert_id=true)
{

	 */
function insert_query($table, $array, $insert_id=true)
{

Zeile 758Zeile 782
			{
$array[$field] = $value;
}

			{
$array[$field] = $value;
}

			else
{
$array[$field] = "'{$value}'";
}
}

			else
{
$array[$field] = $this->quote_val($value);
}
}


$fields = implode(",", array_keys($array));
$values = implode(",", $array);


$fields = implode(",", array_keys($array));
$values = implode(",", $array);

Zeile 775Zeile 799
		if($insert_id != false)
{
return $this->insert_id();

		if($insert_id != false)
{
return $this->insert_id();

		}
else
{
return true;
}

		}
else
{
return true;
}

	}

	}





	/**
* Build one query for multiple inserts from a multidimensional array.
*

	/**
* Build one query for multiple inserts from a multidimensional array.
*

	 * @param string The table name to perform the query on.
* @param array An array of inserts.
* @return int The insert ID if available

	 * @param string $table The table name to perform the query on.
* @param array $array An array of inserts.
* @return void

	 */
function insert_query_multiple($table, $array)
{

	 */
function insert_query_multiple($table, $array)
{

Zeile 795Zeile 819

if(!is_array($array))
{


if(!is_array($array))
{

			return false;

			return;

		}
// Field names
$fields = array_keys($array[0]);

		}
// Field names
$fields = array_keys($array[0]);

Zeile 812Zeile 836
				}
else
{

				}
else
{

					$values[$field] = "'{$value}'";

					$values[$field] = $this->quote_val($value);

				}
}
$insert_rows[] = "(".implode(",", $values).")";

				}
}
$insert_rows[] = "(".implode(",", $values).")";

Zeile 829Zeile 853
	/**
* Build an update query from an array.
*

	/**
* Build an update query from an array.
*

	 * @param string The table name to perform the query on.
* @param array An array of fields and their values.
* @param string An optional where clause for the query.
* @param string An optional limit clause for the query.
* @param boolean An option to quote incoming values of the array.

	 * @param string $table The table name to perform the query on.
* @param array $array An array of fields and their values.
* @param string $where An optional where clause for the query.
* @param string $limit An optional limit clause for the query.
* @param boolean $no_quote An option to quote incoming values of the array.

	 * @return resource The query data.
*/
function update_query($table, $array, $where="", $limit="", $no_quote=false)

	 * @return resource The query data.
*/
function update_query($table, $array, $where="", $limit="", $no_quote=false)

Zeile 862Zeile 886
			}
else
{

			}
else
{

				$query .= $comma.$field."={$quote}{$value}{$quote}";



				$quoted_value = $this->quote_val($value, $quote);

$query .= $comma.$field."={$quoted_value}";

			}
$comma = ', ';

			}
$comma = ', ';

		}
if(!empty($where))
{
$query .= " WHERE $where";
}
return $this->write_query("

		}
if(!empty($where))
{
$query .= " WHERE $where";
}
return $this->write_query("

			UPDATE {$this->table_prefix}$table
SET $query
");

			UPDATE {$this->table_prefix}$table
SET $query
");

 
	}

/**
* @param int|string $value
* @param string $quote
*
* @return int|string
*/
private function quote_val($value, $quote="'")
{
if(is_int($value))
{
$quoted = $value;
}
else
{
$quoted = $quote . $value . $quote;
}

return $quoted;

	}

/**
* Build a delete query.
*

	}

/**
* Build a delete query.
*

	 * @param string The table name to perform the query on.
* @param string An optional where clause for the query.
* @param string An optional limit clause for the query.

	 * @param string $table The table name to perform the query on.
* @param string $where An optional where clause for the query.
* @param string $limit An optional limit clause for the query.

	 * @return resource The query data.
*/
function delete_query($table, $where="", $limit="")

	 * @return resource The query data.
*/
function delete_query($table, $where="", $limit="")

Zeile 902Zeile 948
	/**
* Escape a string according to the pg escape format.
*

	/**
* Escape a string according to the pg escape format.
*

	 * @param string The string to be escaped.

	 * @param string $string The string to be escaped.

	 * @return string The escaped string.
*/
function escape_string($string)
{
if(function_exists("pg_escape_string"))
{

	 * @return string The escaped string.
*/
function escape_string($string)
{
if(function_exists("pg_escape_string"))
{

			$string = pg_escape_string($string);

			$string = pg_escape_string($this->read_link, $string);

		}
else
{

		}
else
{

Zeile 919Zeile 965
	}

/**

	}

/**

	 * Frees the resources of a MySQLi query.

	 * Frees the resources of a PgSQL query.

	 *

	 *

	 * @param object The query to destroy.
* @return boolean Returns true on success, false on faliure

	 * @param resource $query The query to destroy.
* @return boolean Returns true on success, false on failure

	 */
function free_result($query)
{

	 */
function free_result($query)
{

Zeile 932Zeile 978
	/**
* Escape a string used within a like command.
*

	/**
* Escape a string used within a like command.
*

	 * @param string The string to be escaped.

	 * @param string $string The string to be escaped.

	 * @return string The escaped string.
*/
function escape_string_like($string)

	 * @return string The escaped string.
*/
function escape_string_like($string)

	{
return $this->escape_string(str_replace(array('%', '_') , array('\\%' , '\\_') , $string));
}


	{
return $this->escape_string(str_replace(array('\\', '%', '_') , array('\\\\', '\\%' , '\\_') , $string));
}


	/**
* Gets the current version of PgSQL.
*

	/**
* Gets the current version of PgSQL.
*

Zeile 957Zeile 1003
  		$this->version = $version['server'];

return $this->version;

  		$this->version = $version['server'];

return $this->version;

	}

/**

	}

/**

	 * Optimizes a specific table.
*

	 * Optimizes a specific table.
*

	 * @param string The name of the table to be optimized.

	 * @param string $table The name of the table to be optimized.

	 */
function optimize_table($table)
{

	 */
function optimize_table($table)
{

Zeile 972Zeile 1018
	/**
* Analyzes a specific table.
*

	/**
* Analyzes a specific table.
*

	 * @param string The name of the table to be analyzed.

	 * @param string $table The name of the table to be analyzed.

	 */
function analyze_table($table)
{

	 */
function analyze_table($table)
{

Zeile 982Zeile 1028
	/**
* Show the "create table" command for a specific table.
*

	/**
* Show the "create table" command for a specific table.
*

	 * @param string The name of the table.

	 * @param string $table The name of the table.

	 * @return string The pg command to create the specified table.
*/
function show_create_table($table)

	 * @return string The pg command to create the specified table.
*/
function show_create_table($table)

Zeile 1040Zeile 1086
			}

if(!empty($row['rowdefault']))

			}

if(!empty($row['rowdefault']))

			{

			{

				$line .= " DEFAULT {$row['rowdefault']}";
}


				$line .= " DEFAULT {$row['rowdefault']}";
}


Zeile 1065Zeile 1111
		");

$primary_key = array();

		");

$primary_key = array();

 
		$primary_key_name = '';

$unique_keys = array();


// We do this in two steps. It makes placing the comma easier
while($row = $this->fetch_array($query))


// We do this in two steps. It makes placing the comma easier
while($row = $this->fetch_array($query))

Zeile 1073Zeile 1122
			{
$primary_key[] = $row['column_name'];
$primary_key_name = $row['index_name'];

			{
$primary_key[] = $row['column_name'];
$primary_key_name = $row['index_name'];

 
			}

if($row['unique_key'] == 't')
{
$unique_keys[$row['index_name']][] = $row['column_name'];

			}
}

if(!empty($primary_key))
{
$lines[] = " CONSTRAINT $primary_key_name PRIMARY KEY (".implode(', ', $primary_key).")";

			}
}

if(!empty($primary_key))
{
$lines[] = " CONSTRAINT $primary_key_name PRIMARY KEY (".implode(', ', $primary_key).")";

		}







		}

foreach($unique_keys as $key_name => $key_columns)
{
$lines[] = " CONSTRAINT $key_name UNIQUE (".implode(', ', $key_columns).")";
}


		$table_lines .= implode(", \n", $lines);
$table_lines .= "\n)\n";

		$table_lines .= implode(", \n", $lines);
$table_lines .= "\n)\n";





		return $table_lines;
}

/**
* Show the "show fields from" command for a specific table.
*

		return $table_lines;
}

/**
* Show the "show fields from" command for a specific table.
*

	 * @param string The name of the table.
* @return string Field info for that table

	 * @param string $table The name of the table.
* @return array Field info for that table

	 */
function show_fields_from($table)
{

	 */
function show_fields_from($table)
{

Zeile 1099Zeile 1158
		$primary_key = $this->fetch_field($query, 'column_name');

$query = $this->write_query("

		$primary_key = $this->fetch_field($query, 'column_name');

$query = $this->write_query("

			SELECT column_name as Field, data_type as Extra

			SELECT column_name, data_type, is_nullable, column_default, character_maximum_length, numeric_precision, numeric_precision_radix, numeric_scale

			FROM information_schema.columns
WHERE table_name = '{$this->table_prefix}{$table}'

			FROM information_schema.columns
WHERE table_name = '{$this->table_prefix}{$table}'

		");


		");
$field_info = array();

		while($field = $this->fetch_array($query))
{

		while($field = $this->fetch_array($query))
{

			if($field['field'] == $primary_key)

























			if($field['column_name'] == $primary_key)
{
$field['_key'] = 'PRI';
}
else
{
$field['_key'] = '';
}

if(stripos($field['column_default'], 'nextval') !== false)
{
$field['_extra'] = 'auto_increment';
}
else
{
$field['_extra'] = '';
}

// bit, character, text fields.
if(!is_null($field['character_maximum_length']))
{
$field['data_type'] .= '('.(int)$field['character_maximum_length'].')';
}
// numeric/decimal fields.
else if($field['numeric_precision_radix'] == 10 && !is_null($field['numeric_precision']) && !is_null($field['numeric_scale']))

			{

			{

				$field['extra'] = 'auto_increment';

				$field['data_type'] .= '('.(int)$field['numeric_precision'].','.(int)$field['numeric_scale'].')';

			}

			}


$field_info[] = array('Extra' => $field['extra'], 'Field' => $field['field']);









$field_info[] = array(
'Field' => $field['column_name'],
'Type' => $field['data_type'],
'Null' => $field['is_nullable'],
'Key' => $field['_key'],
'Default' => $field['column_default'],
'Extra' => $field['_extra'],
);

		}

return $field_info;

		}

return $field_info;

Zeile 1119Zeile 1210
	/**
* Returns whether or not the table contains a fulltext index.
*

	/**
* Returns whether or not the table contains a fulltext index.
*

	 * @param string The name of the table.
* @param string Optionally specify the name of the index.

	 * @param string $table The name of the table.
* @param string $index Optionally specify the name of the index.

	 * @return boolean True or false if the table has a fulltext index or not.
*/
function is_fulltext($table, $index="")

	 * @return boolean True or false if the table has a fulltext index or not.
*/
function is_fulltext($table, $index="")

	{
return false;
}


	{
return false;
}


	/**
* Returns whether or not this database engine supports fulltext indexing.

	/**
* Returns whether or not this database engine supports fulltext indexing.

	 *
* @param string The table to be checked.
* @return boolean True or false if supported or not.
*/

	 *
* @param string $table The table to be checked.
* @return boolean True or false if supported or not.
*/


function supports_fulltext($table)
{


function supports_fulltext($table)
{

Zeile 1143Zeile 1234
	/**
* Returns whether or not this database engine supports boolean fulltext matching.
*

	/**
* Returns whether or not this database engine supports boolean fulltext matching.
*

	 * @param string The table to be checked.

	 * @param string $table The table to be checked.

	 * @return boolean True or false if supported or not.
*/
function supports_fulltext_boolean($table)

	 * @return boolean True or false if supported or not.
*/
function supports_fulltext_boolean($table)

	{
return false;
}

	{
return false;
}


/**
* Creates a fulltext index on the specified column in the specified table with optional index name.
*


/**
* Creates a fulltext index on the specified column in the specified table with optional index name.
*

	 * @param string The name of the table.
* @param string Name of the column to be indexed.
* @param string The index name, optional.


	 * @param string $table The name of the table.
* @param string $column Name of the column to be indexed.
* @param string $name The index name, optional.
* @return bool

	 */
function create_fulltext_index($table, $column, $name="")
{

	 */
function create_fulltext_index($table, $column, $name="")
{

Zeile 1166Zeile 1258
	/**
* Drop an index with the specified name from the specified table
*

	/**
* Drop an index with the specified name from the specified table
*

	 * @param string The name of the table.
* @param string The name of the index.

	 * @param string $table The name of the table.
* @param string $name The name of the index.

	 */
function drop_index($table, $name)
{

	 */
function drop_index($table, $name)
{

Zeile 1180Zeile 1272
	/**
* Checks to see if an index exists on a specified table
*

	/**
* Checks to see if an index exists on a specified table
*

	 * @param string The name of the table.
* @param string The name of the index.


	 * @param string $table The name of the table.
* @param string $index The name of the index.
* @return bool Returns whether index exists

	 */
function index_exists($table, $index)
{

	 */
function index_exists($table, $index)
{

Zeile 1206Zeile 1299
	/**
* Drop an table with the specified table
*

	/**
* Drop an table with the specified table
*

	 * @param string The name of the table.
* @param boolean hard drop - no checking
* @param boolean use table prefix

	 * @param string $table The name of the table.
* @param boolean $hard hard drop - no checking
* @param boolean $table_prefix use table prefix

	 */
function drop_table($table, $hard=false, $table_prefix=true)

	 */
function drop_table($table, $hard=false, $table_prefix=true)

	{
if($table_prefix == false)
{
$table_prefix = "";
}
else
{

	{
if($table_prefix == false)
{
$table_prefix = "";
}
else
{

			$table_prefix = $this->table_prefix;
}

			$table_prefix = $this->table_prefix;
}

 

$table_prefix_bak = $this->table_prefix;
$this->table_prefix = '';
$fields = array_column($this->show_fields_from($table_prefix.$table), 'Field');


if($hard == false)


if($hard == false)

		{
if($this->table_exists($table))

		{
if($this->table_exists($table_prefix.$table))

			{
$this->write_query('DROP TABLE '.$table_prefix.$table);
}

			{
$this->write_query('DROP TABLE '.$table_prefix.$table);
}

Zeile 1231Zeile 1328
		else
{
$this->write_query('DROP TABLE '.$table_prefix.$table);

		else
{
$this->write_query('DROP TABLE '.$table_prefix.$table);

		}

$query = $this->query("SELECT column_name FROM information_schema.constraint_column_usage WHERE table_name = '{$table}' and constraint_name = '{$table}_pkey' LIMIT 1");
$field = $this->fetch_field($query, 'column_name');

// Do we not have a primary field?
if($field)
{
$this->write_query('DROP SEQUENCE {$table}_{$field}_id_seq');
}


















		}

$this->table_prefix = $table_prefix_bak;

if(!empty($fields))
{
foreach($fields as &$field)
{
$field = "{$table_prefix}{$table}_{$field}_seq";
}
unset($field);

if(version_compare($this->get_version(), '8.2.0', '>='))
{
$fields = implode(', ', $fields);
$this->write_query("DROP SEQUENCE IF EXISTS {$fields}");
}
else
{
$fields = "'".implode("', '", $fields)."'";
$query = $this->query("SELECT sequence_name as field FROM information_schema.sequences WHERE sequence_name in ({$fields}) AND sequence_schema = 'public'");
while($row = $this->fetch_array($query))
{
$this->write_query("DROP SEQUENCE {$row['field']}");
}
}
}

	}

/**
* Renames a table
*

	}

/**
* Renames a table
*

	 * @param string The old table name
* @param string the new table name
* @param boolean use table prefix


	 * @param string $old_table The old table name
* @param string $new_table the new table name
* @param boolean $table_prefix use table prefix
* @return resource

	 */
function rename_table($old_table, $new_table, $table_prefix=true)
{
if($table_prefix == false)

	 */
function rename_table($old_table, $new_table, $table_prefix=true)
{
if($table_prefix == false)

		{

		{

			$table_prefix = "";

			$table_prefix = "";

		}

		}

		else
{
$table_prefix = $this->table_prefix;
}

return $this->write_query("ALTER TABLE {$table_prefix}{$old_table} RENAME TO {$table_prefix}{$new_table}");

		else
{
$table_prefix = $this->table_prefix;
}

return $this->write_query("ALTER TABLE {$table_prefix}{$old_table} RENAME TO {$table_prefix}{$new_table}");

	}

	}


/**
* Replace contents of table with values
*


/**
* Replace contents of table with values
*

	 * @param string The table
* @param array The replacements
* @param mixed The default field(s)
* @param boolean Whether or not to return an insert id. True by default


	 * @param string $table The table
* @param array $replacements The replacements
* @param string|array $default_field The default field(s)
* @param boolean $insert_id Whether or not to return an insert id. True by default
* @return int|resource|bool Returns either the insert id (if a new row is inserted and $insert_id is true), a boolean (if $insert_id is wrong) or the query resource (if a row is updated)

	 */
function replace_query($table, $replacements=array(), $default_field="", $insert_id=true)
{

	 */
function replace_query($table, $replacements=array(), $default_field="", $insert_id=true)
{

Zeile 1287Zeile 1403
		}

$update = false;

		}

$update = false;

		if(is_array($main_field) && !empty($main_field))
{
$search_bit = array();
$string = '';
foreach($main_field as $field)
{
if(isset($mybb->binary_fields[$table][$field]) && $mybb->binary_fields[$table][$field])
{
$search_bit[] = "{$field} = ".$replacements[$field];
}
else
{
$search_bit[] = "{$field} = '".$replacements[$field]."'";
}
}

$search_bit = implode(" AND ", $search_bit);
$query = $this->write_query("SELECT COUNT(".$main_field[0].") as count FROM {$this->table_prefix}{$table} WHERE {$search_bit} LIMIT 1");
if($this->fetch_field($query, "count") == 1)
{
$update = true;
}
}
else
{
$query = $this->write_query("SELECT {$main_field} FROM {$this->table_prefix}{$table}");

while($column = $this->fetch_array($query))
{
if($column[$main_field] == $replacements[$main_field])
{
$update = true;
break;
}
}
}

if($update === true)
{
if(is_array($main_field))
{
return $this->update_query($table, $replacements, $search_bit);
}

		$search_bit = array();

if(!is_array($main_field))
{
$main_field = array($main_field);
}

foreach($main_field as $field)
{
if(isset($mybb->binary_fields[$table][$field]) && $mybb->binary_fields[$table][$field])
{
$search_bit[] = "{$field} = ".$replacements[$field];
}































			else
{

			else
{

				return $this->update_query($table, $replacements, "{$main_field}='".$replacements[$main_field]."'");

				$search_bit[] = "{$field} = ".$this->quote_val($replacements[$field]);

			}

			}

 
		}
$search_bit = implode(" AND ", $search_bit);
$query = $this->write_query("SELECT COUNT(".$main_field[0].") as count FROM {$this->table_prefix}{$table} WHERE {$search_bit} LIMIT 1");
if($this->fetch_field($query, "count") == 1)
{
$update = true;
}

if($update === true)
{
return $this->update_query($table, $replacements, $search_bit);

		}
else
{

		}
else
{

Zeile 1341Zeile 1438
		}
}


		}
}


 
	/**
* @param string $table
* @param string $append
*
* @return string
*/

	function build_fields_string($table, $append="")

	function build_fields_string($table, $append="")

	{

	{

		$fields = $this->show_fields_from($table);

		$fields = $this->show_fields_from($table);

		$comma = '';

		$comma = $fieldstring = '';


foreach($fields as $key => $field)
{
$fieldstring .= $comma.$append.$field['Field'];
$comma = ',';
}


foreach($fields as $key => $field)
{
$fieldstring .= $comma.$append.$field['Field'];
$comma = ',';
}





		return $fieldstring;
}

/**
* Drops a column
*

		return $fieldstring;
}

/**
* Drops a column
*

	 * @param string The table
* @param string The column name


	 * @param string $table The table
* @param string $column The column name
* @return resource

	 */
function drop_column($table, $column)
{
return $this->write_query("ALTER TABLE {$this->table_prefix}{$table} DROP {$column}");

	 */
function drop_column($table, $column)
{
return $this->write_query("ALTER TABLE {$this->table_prefix}{$table} DROP {$column}");

	}

	}


/**
* Adds a column


/**
* Adds a column

	 *
* @param string The table
* @param string The column name
* @param string the new column definition
*/


	 *
* @param string $table The table
* @param string $column The column name
* @param string $definition the new column definition
* @return resource
*/

	function add_column($table, $column, $definition)
{
return $this->write_query("ALTER TABLE {$this->table_prefix}{$table} ADD {$column} {$definition}");
}

	function add_column($table, $column, $definition)
{
return $this->write_query("ALTER TABLE {$this->table_prefix}{$table} ADD {$column} {$definition}");
}





	/**
* Modifies a column
*

	/**
* Modifies a column
*

	 * @param string The table
* @param string The column name
* @param string the new column definition
* @param boolean Whether to drop or set a column
* @param boolean The new default value (if one is to be set)


	 * @param string $table The table
* @param string $column The column name
* @param string $new_definition the new column definition
* @param boolean|string $new_not_null Whether to "drop" or "set" the NOT NULL attribute (no change if false)
* @param boolean|string $new_default_value The new default value, or false to drop the attribute
* @return bool Returns true if all queries are executed successfully or false if one of them failed

	 */
function modify_column($table, $column, $new_definition, $new_not_null=false, $new_default_value=false)
{
$result1 = $result2 = $result3 = true;

if($new_definition !== false)

	 */
function modify_column($table, $column, $new_definition, $new_not_null=false, $new_default_value=false)
{
$result1 = $result2 = $result3 = true;

if($new_definition !== false)

		{

		{

			$result1 = $this->write_query("ALTER TABLE {$this->table_prefix}{$table} ALTER COLUMN {$column} TYPE {$new_definition}");

			$result1 = $this->write_query("ALTER TABLE {$this->table_prefix}{$table} ALTER COLUMN {$column} TYPE {$new_definition}");

		}


		}


		if($new_not_null !== false)

		if($new_not_null !== false)

		{

		{

			$set_drop = "DROP";

if(strtolower($new_not_null) == "set")
{
$set_drop = "SET";

			$set_drop = "DROP";

if(strtolower($new_not_null) == "set")
{
$set_drop = "SET";

			}


			}


			$result2 = $this->write_query("ALTER TABLE {$this->table_prefix}{$table} ALTER COLUMN {$column} {$set_drop} NOT NULL");
}


			$result2 = $this->write_query("ALTER TABLE {$this->table_prefix}{$table} ALTER COLUMN {$column} {$set_drop} NOT NULL");
}


		if($new_default_value !== false)

		if($new_default_value !== null)

		{

		{

			$result3 = $this->write_query("ALTER TABLE {$this->table_prefix}{$table} ALTER COLUMN {$column} SET DEFAULT {$new_default_value}");
}
else
{
$result3 = $this->write_query("ALTER TABLE {$this->table_prefix}{$table} ALTER COLUMN {$column} DROP DEFAULT");




			if($new_default_value !== false)
{
$result3 = $this->write_query("ALTER TABLE {$this->table_prefix}{$table} ALTER COLUMN {$column} SET DEFAULT {$new_default_value}");
}
else
{
$result3 = $this->write_query("ALTER TABLE {$this->table_prefix}{$table} ALTER COLUMN {$column} DROP DEFAULT");
}

		}

return $result1 && $result2 && $result3;

		}

return $result1 && $result2 && $result3;

Zeile 1423Zeile 1532
	/**
* Renames a column
*

	/**
* Renames a column
*

	 * @param string The table
* @param string The old column name
* @param string the new column name
* @param string the new column definition
* @param boolean Whether to drop or set a column
* @param boolean The new default value (if one is to be set)


	 * @param string $table The table
* @param string $old_column The old column name
* @param string $new_column the new column name
* @param string $new_definition the new column definition
* @param boolean|string $new_not_null Whether to "drop" or "set" the NOT NULL attribute (no change if false)
* @param boolean|string $new_default_value The new default value, or false to drop the attribute
* @return bool Returns true if all queries are executed successfully

	 */
function rename_column($table, $old_column, $new_column, $new_definition, $new_not_null=false, $new_default_value=false)
{

	 */
function rename_column($table, $old_column, $new_column, $new_definition, $new_not_null=false, $new_default_value=false)
{

Zeile 1440Zeile 1550
	/**
* Sets the table prefix used by the simple select, insert, update and delete functions
*

	/**
* Sets the table prefix used by the simple select, insert, update and delete functions
*

	 * @param string The new table prefix

	 * @param string $prefix The new table prefix

	 */
function set_table_prefix($prefix)
{

	 */
function set_table_prefix($prefix)
{

Zeile 1450Zeile 1560
	/**
* Fetched the total size of all mysql tables or a specific table
*

	/**
* Fetched the total size of all mysql tables or a specific table
*

	 * @param string The table (optional)

	 * @param string $table The table (optional)

	 * @return integer the total size of all mysql tables or a specific table
*/
function fetch_size($table='')

	 * @return integer the total size of all mysql tables or a specific table
*/
function fetch_size($table='')

Zeile 1474Zeile 1584
	/**
* Fetch a list of database character sets this DBMS supports
*

	/**
* Fetch a list of database character sets this DBMS supports
*

	 * @return array Array of supported character sets with array key being the name, array value being display name. False if unsupported

	 * @return array|bool Array of supported character sets with array key being the name, array value being display name. False if unsupported

	 */
function fetch_db_charsets()
{

	 */
function fetch_db_charsets()
{

Zeile 1484Zeile 1594
	/**
* Fetch a database collation for a particular database character set
*

	/**
* Fetch a database collation for a particular database character set
*

	 * @param string The database character set
* @return string The matching database collation, false if unsupported

	 * @param string $charset The database character set
* @return string|bool The matching database collation, false if unsupported

	 */
function fetch_charset_collation($charset)
{

	 */
function fetch_charset_collation($charset)
{

Zeile 1515Zeile 1625
	/**
* Binary database fields require special attention.
*

	/**
* Binary database fields require special attention.
*

	 * @param string Binary value

	 * @param string $string Binary value

	 * @return string Encoded binary value
*/
function escape_binary($string)
{

	 * @return string Encoded binary value
*/
function escape_binary($string)
{

		return "'".pg_escape_bytea($string)."'";

		return "'".pg_escape_bytea($this->read_link, $string)."'";

	}

/**
* Unescape binary data.
*

	}

/**
* Unescape binary data.
*

	 * @param string Binary value

	 * @param string $string Binary value

	 * @return string Encoded binary value
*/
function unescape_binary($string)

	 * @return string Encoded binary value
*/
function unescape_binary($string)