Vergleich inc/db_pgsql.php - 1.8.1 - 1.8.22

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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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	/**
	 * 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)

Zeile 279Zeile 279
	/**
	 * 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.

	 * @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)
	{

 
	 * @return resource The query data.
	 */
	function query($string, $hide_errors=0, $write_query=0)
	{

		global $pagestarttime, $db, $mybb;

		global $mybb;



 


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

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


		$this->last_query = $string;



		$this->last_query = $string;


Zeile 319Zeile 319
		}

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

 
		}

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

		{

		{

			$this->error($string, $query);
			exit;

 
			$this->error($string, $query);
			exit;

		}

		}


		$query_time = get_execution_time();
		$this->query_time += $query_time;
		$this->query_count++;
		$this->last_result = $query;

 

		$query_time = get_execution_time();
		$this->query_time += $query_time;
		$this->query_count++;
		$this->last_result = $query;





		if($mybb->debug_mode)
		{
			$this->explain_query($string, $query_time);
		}
		return $query;

 
		if($mybb->debug_mode)
		{
			$this->explain_query($string, $query_time);
		}
		return $query;

	}


	}


	/**
	 * 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 resource The query data.
	 */
	function write_query($query, $hide_errors=0)

Zeile 351Zeile 351
	/**
	 * 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)

	{

	{

		if(preg_match("#^\s*select#i", $string))
		{
			$query = pg_query($this->current_link, "EXPLAIN $string");

		if(preg_match("#^\s*select#i", $string))
		{
			$query = pg_query($this->current_link, "EXPLAIN $string");

Zeile 387Zeile 387
		else
		{
			$this->explain .= "<table style=\"background-color: #666;\" width=\"95%\" cellpadding=\"4\" cellspacing=\"1\" align=\"center\">\n".

 
		else
		{
			$this->explain .= "<table style=\"background-color: #666;\" width=\"95%\" cellpadding=\"4\" cellspacing=\"1\" align=\"center\">\n".

				"<tr>\n".

				"<tr>\n".

				"<td style=\"background-color: #ccc;\"><strong>#".$this->query_count." - Write Query</strong></td>\n".
				"</tr>\n".
				"<tr style=\"background-color: #fefefe;\">\n".

				"<td style=\"background-color: #ccc;\"><strong>#".$this->query_count." - Write Query</strong></td>\n".
				"</tr>\n".
				"<tr style=\"background-color: #fefefe;\">\n".

Zeile 407Zeile 407
	/**
	 * 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)
	{

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			default:
				$resulttype = PGSQL_ASSOC;
				break;

 
			default:
				$resulttype = PGSQL_ASSOC;
				break;

		}

		}


		$array = pg_fetch_array($query, NULL, $resulttype);



		$array = pg_fetch_array($query, NULL, $resulttype);


Zeile 431Zeile 431
	/**
	 * 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)
	{

	 */
	function fetch_field($query, $field, $row=false)
	{

Zeile 451Zeile 452
	/**
	 * 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.
	 */
	function num_rows($query)

	 * @return int The number of rows in the result.
	 */
	function num_rows($query)

Zeile 488Zeile 490

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

 

		// 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");
		return $this->fetch_field($id, 'last_value');
	}

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

Zeile 506Zeile 508
		if($this->write_link)
		{
			@pg_close($this->write_link);

 
		if($this->write_link)
		{
			@pg_close($this->write_link);

		}
	}

		}
	}


	/**
	 * 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 0;
		}

Zeile 527Zeile 530
	/**
	 * 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);
		}

Zeile 549Zeile 553
	/**
	 * 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 560Zeile 565
				global $error_handler;

				if(!is_object($error_handler))

 
				global $error_handler;

				if(!is_object($error_handler))

				{

				{

					require_once MYBB_ROOT."inc/class_error.php";
					$error_handler = new errorHandler();
				}

					require_once MYBB_ROOT."inc/class_error.php";
					$error_handler = new errorHandler();
				}

Zeile 592Zeile 597
	/**
	 * 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 606
	}

	/**

 
	}

	/**

	 * 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='')

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

Zeile 630Zeile 635
	/**
	 * Check if a table exists in a database.
	 *

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

	 * @param string The table name.

	 * @param string $table The table name.

	 * @return boolean True when exists, false if not.
	 */
	function table_exists($table)

	 * @return boolean True when exists, false if not.
	 */
	function table_exists($table)

Zeile 653Zeile 658
	/**
	 * 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)

	 * @return boolean True when exists, false if not.
	 */
	function field_exists($field, $table)

Zeile 676Zeile 681
	/**
	 * 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)

Zeile 695Zeile 700
	/**
	 * 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 743
	/**
	 * 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 760Zeile 765
			}
			else
			{

 
			}
			else
			{

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

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

			}
		}


			}
		}


Zeile 785Zeile 790
	/**
	 * 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 800

		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 809Zeile 814
				if(isset($mybb->binary_fields[$table][$field]) && $mybb->binary_fields[$table][$field])
				{
					$values[$field] = $value;

 
				if(isset($mybb->binary_fields[$table][$field]) && $mybb->binary_fields[$table][$field])
				{
					$values[$field] = $value;

				}

				}

				else
				{

 
				else
				{

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

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

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

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

Zeile 825Zeile 830
			VALUES {$insert_rows}
		");
	}

 
			VALUES {$insert_rows}
		");
	}





	/**
	 * 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 841Zeile 846
		global $mybb;

		if(!is_array($array))

 
		global $mybb;

		if(!is_array($array))

		{

		{

			return false;

 
			return false;

		}

		}


		$comma = "";
		$query = "";


		$comma = "";
		$query = "";

Zeile 857Zeile 862
		foreach($array as $field => $value)
		{
			if(isset($mybb->binary_fields[$table][$field]) && $mybb->binary_fields[$table][$field])

 
		foreach($array as $field => $value)
		{
			if(isset($mybb->binary_fields[$table][$field]) && $mybb->binary_fields[$table][$field])

			{

			{

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

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

			}

			}

			else
			{

 
			else
			{

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



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

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

			}
			$comma = ', ';
		}

			}
			$comma = ', ';
		}

Zeile 873Zeile 880
		return $this->write_query("
			UPDATE {$this->table_prefix}$table
			SET $query

 
		return $this->write_query("
			UPDATE {$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 929
	/**
	 * 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)

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

Zeile 910Zeile 937
		if(function_exists("pg_escape_string"))
		{
			$string = pg_escape_string($string);

 
		if(function_exists("pg_escape_string"))
		{
			$string = pg_escape_string($string);

		}

		}

		else
		{
			$string = addslashes($string);
		}
		return $string;

 
		else
		{
			$string = addslashes($string);
		}
		return $string;

	}

	/**
	 * 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($query)
	{
		return pg_free_result($query);

 
	 */
	function free_result($query)
	{
		return pg_free_result($query);

	}

	/**

	}

	/**

	 * 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.

 
	 * @return string The escaped string.

	 */

	 */

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

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

Zeile 946Zeile 973
	 * @return string Version of PgSQL.
	 */
	function get_version()

 
	 * @return string Version of PgSQL.
	 */
	function get_version()

	{

	{

		if($this->version)
		{
			return $this->version;
		}

 
		if($this->version)
		{
			return $this->version;
		}





		$version = pg_version($this->current_link);

 
		$version = pg_version($this->current_link);





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

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





		return $this->version;
	}

	/**
	 * Optimizes a specific table.

 
		return $this->version;
	}

	/**
	 * 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)

	{

	{

		$this->write_query("VACUUM ".$this->table_prefix.$table."");

 
		$this->write_query("VACUUM ".$this->table_prefix.$table."");

	}


	}


	/**
	 * 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)
	{
		$this->write_query("ANALYZE ".$this->table_prefix.$table."");

 
	 */
	function analyze_table($table)
	{
		$this->write_query("ANALYZE ".$this->table_prefix.$table."");

	}

	/**

	}

	/**

	 * 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 1012Zeile 1039
			if(!$query2)
			{
				unset($row['rowdefault']);

 
			if(!$query2)
			{
				unset($row['rowdefault']);

			}

			}

			else
			{
				$row['rowdefault'] = $this->fetch_field($query2, 'rowdefault');

			else
			{
				$row['rowdefault'] = $this->fetch_field($query2, 'rowdefault');

Zeile 1065Zeile 1092
		");

		$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))
		{
			if($row['primary_key'] == 't')

 

		// We do this in two steps. It makes placing the comma easier
		while($row = $this->fetch_array($query))
		{
			if($row['primary_key'] == 't')

			{

			{

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

Zeile 1090Zeile 1130
	/**
	 * Show the "show fields from" command for a specific table.
	 *

 
	/**
	 * 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 1103Zeile 1143
			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))
		{
			if($field['field'] == $primary_key)
			{
				$field['extra'] = 'auto_increment';

 
		while($field = $this->fetch_array($query))
		{
			if($field['field'] == $primary_key)
			{
				$field['extra'] = 'auto_increment';

			}


			}


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

		return $field_info;

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

		return $field_info;

	}

	}


	/**
	 * 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)
	{
		return false;

	function supports_fulltext($table)
	{
		return false;

Zeile 1143Zeile 1184
	/**
	 * 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.

 
	 * @return boolean True or false if supported or not.

	 */

	 */

	function supports_fulltext_boolean($table)
	{
		return false;

	function supports_fulltext_boolean($table)
	{
		return false;

Zeile 1154Zeile 1195
	/**
	 * 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 1208
	/**
	 * 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 1222
	/**
	 * 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)

	{

	{

		$err = $this->error_reporting;
		$this->error_reporting = 0;


		$err = $this->error_reporting;
		$this->error_reporting = 0;


Zeile 1194Zeile 1237
		$this->error_reporting = $err;

		if($exists)

 
		$this->error_reporting = $err;

		if($exists)

		{

		{

			return true;
		}
		else
		{
			return false;

 
			return true;
		}
		else
		{
			return false;

		}

		}

	}

	/**
	 * 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, $table_prefix=true)
	{
		if($table_prefix == false)

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

		{

		{

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

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

		}

		}


		if($hard == false)
		{


		if($hard == false)
		{

Zeile 1227Zeile 1270
			{
				$this->write_query('DROP TABLE '.$table_prefix.$table);
			}

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

		}

		}

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

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

Zeile 1235Zeile 1278

		$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');

 

		$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)
		{

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

Zeile 1246Zeile 1289
	/**
	 * 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;

		else
		{
			$table_prefix = $this->table_prefix;

Zeile 1266Zeile 1310

	/**
	 * 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)
	{
		global $mybb;

	function replace_query($table, $replacements=array(), $default_field="", $insert_id=true)
	{
		global $mybb;

Zeile 1287Zeile 1332
		}

		$update = false;

 
		}

		$update = false;

		if(is_array($main_field) && !empty($main_field))


























		$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
			{
				$search_bit[] = "{$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)

		{

 
		{

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

			return $this->update_query($table, $replacements, $search_bit);
		}













































		else
		{
			return $this->insert_query($table, $replacements, $insert_id);
		}
	}


 
		else
		{
			return $this->insert_query($table, $replacements, $insert_id);
		}
	}


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

	function build_fields_string($table, $append="")
	{
		$fields = $this->show_fields_from($table);

 
	function build_fields_string($table, $append="")
	{
		$fields = $this->show_fields_from($table);

		$comma = '';

		$comma = $fieldstring = '';


		foreach($fields as $key => $field)
		{


		foreach($fields as $key => $field)
		{

Zeile 1358Zeile 1390
	/**
	 * Drops a column
	 *

 
	/**
	 * 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)
	{

	 */
	function drop_column($table, $column)
	{

Zeile 1369Zeile 1402
	/**
	 * 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)
	{

	 */
	function add_column($table, $column, $definition)
	{

Zeile 1381Zeile 1415
	/**
	 * 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)
	{

	 */
	function modify_column($table, $column, $new_definition, $new_not_null=false, $new_default_value=false)
	{

Zeile 1399Zeile 1434
		if($new_not_null !== false)
		{
			$set_drop = "DROP";

 
		if($new_not_null !== false)
		{
			$set_drop = "DROP";





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

 
			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 1461
	/**
	 * 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 1479
	/**
	 * 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 1489
	/**
	 * 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 1513
	/**
	 * 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 1523
	/**
	 * 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 1554
	/**
	 * 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)

Zeile 1526Zeile 1565
	/**
	 * 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)