Vergleich inc/db_sqlite.php - 1.8.1 - 1.8.36

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 *
*/


 *
*/


class DB_SQLite

class DB_SQLite implements DB_Base

{
/**
* The title of this layer.

{
/**
* The title of this layer.

Zeile 30Zeile 30
	 * @var string
*/
public $type;

	 * @var string
*/
public $type;

 

/**
* PDOStatement objects of performed queries.
*
* @var array
*/
public $query_objects = array();


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


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

Zeile 58Zeile 65
	 * @var resource
*/
public $link;

	 * @var resource
*/
public $link;

 

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


/**
* Explanation of a query.


/**
* Explanation of a query.

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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";





	/**
* The table prefix used for simple select, update, insert and delete queries
*

	/**
* The table prefix used for simple select, update, insert and delete queries
*

Zeile 89Zeile 101

/**
* The extension used to run the SQL database


/**
* The extension used to run the SQL database

	 *

	 *

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

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

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	public $query_time = 0;

/**

	public $query_time = 0;

/**

	 * Connect to the database server.

	 * Our pdo implementation

	 *

	 *

	 * @param array Array of DBMS connection details.
* @return resource The DB connection resource. Returns false on failure.








	 * @var dbpdoEngine
*/
var $db;

/**
* Connect to the database server.
*
* @param array $config Array of DBMS connection details.
* @return bool Returns false on failure, otherwise true

	 */
function connect($config)
{
get_execution_time();


	 */
function connect($config)
{
get_execution_time();


		require_once MYBB_ROOT."inc/db_pdo.php";

$this->db = new dbpdoEngine("sqlite:{$config['database']}");







		require_once MYBB_ROOT."inc/db_pdo.php";

try {
$this->db = new dbpdoEngine("sqlite:{$config['database']}");
} catch (Exception $ex) {
$this->error("[READ] Unable to open the SQLite database");

return false;
}


$query_time = get_execution_time();



$query_time = get_execution_time();


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		$this->connections[] = "[WRITE] {$config['database']} (Connected in ".format_time_duration($query_time).")";

if($this->db)

		$this->connections[] = "[WRITE] {$config['database']} (Connected in ".format_time_duration($query_time).")";

if($this->db)

		{

		{

			$this->query('PRAGMA short_column_names = 1');
return true;
}

			$this->query('PRAGMA short_column_names = 1');
return true;
}

Zeile 149Zeile 174
	/**
* Query the database.
*

	/**
* Query the database.
*

	 * @param string The query SQL.
* @param boolean 1 if hide errors, 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 master database, 0 if not.
* @return PDOStatement The query data.

	 */

	 */

	function query($string, $hide_errors=0)

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

	{

	{

		global $pagestarttime, $db, $mybb;

		global $mybb;


get_execution_time();



get_execution_time();


Zeile 200Zeile 226
				$this->error($error['message'], $error['code']);
}
}

				$this->error($error['message'], $error['code']);
}
}

 

$this->query_objects[] = $query;


if($this->error_number($query) > 0 && !$hide_errors)
{
$this->error($string, $query);
exit;


if($this->error_number($query) > 0 && !$hide_errors)
{
$this->error($string, $query);
exit;

		}

		}


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


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





		if($mybb->debug_mode)

		if($mybb->debug_mode)

		{

		{

			$this->explain_query($string, $query_time);
}

if(strtolower(substr(ltrim($string), 0, 6)) == "create")
{
$query->closeCursor();

			$this->explain_query($string, $query_time);
}

if(strtolower(substr(ltrim($string), 0, 6)) == "create")
{
$query->closeCursor();

			return;

			return null;

		}

return $query;

		}

return $query;

Zeile 228Zeile 256
	/**
* 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)
{

Zeile 238Zeile 266
			$this->explain .= "<table style=\"background-color: #666;\" width=\"95%\" cellpadding=\"4\" cellspacing=\"1\" align=\"center\">\n".
"<tr>\n".
"<td colspan=\"8\" style=\"background-color: #ccc;\"><strong>#".$this->query_count." - Select Query</strong></td>\n".

			$this->explain .= "<table style=\"background-color: #666;\" width=\"95%\" cellpadding=\"4\" cellspacing=\"1\" align=\"center\">\n".
"<tr>\n".
"<td colspan=\"8\" style=\"background-color: #ccc;\"><strong>#".$this->query_count." - Select Query</strong></td>\n".

				"</tr>\n".
"<tr>\n".

				"</tr>\n".
"<tr>\n".

				"<td colspan=\"8\" style=\"background-color: #fefefe;\"><span style=\"font-family: Courier; font-size: 14px;\">".htmlspecialchars_uni($string)."</span></td>\n".
"</tr>\n".
"<tr>\n".

				"<td colspan=\"8\" style=\"background-color: #fefefe;\"><span style=\"font-family: Courier; font-size: 14px;\">".htmlspecialchars_uni($string)."</span></td>\n".
"</tr>\n".
"<tr>\n".

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

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

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

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

	 */
function write_query($query, $hide_errors=0)
{
return $this->query($query, $hide_errors);

	 */
function write_query($query, $hide_errors=0)
{
return $this->query($query, $hide_errors);

	}

	}


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


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

	 * @param resource The result data.
* @param constant The type of array to return.

	 * @param PDOStatement $query The result data.
* @param int $resulttype One of PDO's constants: FETCH_ASSOC, FETCH_BOUND, FETCH_CLASS, FETCH_INTO, FETCH_LAZY, FETCH_NAMED, FETCH_NUM, FETCH_OBJ or FETCH_BOTH

	 * @return array The array of results.
*/

	 * @return array The array of results.
*/

	function fetch_array($query)

	function fetch_array($query, $resulttype=PDO::FETCH_BOTH)

	{

	{

		$array = $this->db->fetch_array($query);

		$array = $this->db->fetch_array($query, $resulttype);

		return $array;
}

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

		return $array;
}

/**
* 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 PDOStatement $query The query ID.
* @param string $field The name of the field to return.
* @param int|bool $row The number of the row to fetch it from.
* @return mixed

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

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

Zeile 307Zeile 336
			$this->data_seek($query, $row);
}
$array = $this->fetch_array($query);

			$this->data_seek($query, $row);
}
$array = $this->fetch_array($query);

		return $array[$field];
















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

/**
* Moves internal row pointer to the next row
*
* @param PDOStatement $query The query ID.
* @param int $row The pointer to move the row to.
*/
function data_seek($query, $row)
{
$this->db->seek($query, $row);

	}

	}





	/**

	/**

	 * Moves internal row pointer to the next row

	 * Closes cursors of registered queries.

	 *

	 *

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

 
	 */

	 */

	function data_seek($query, $row)

	function close_cursors()

	{

	{

		return $this->db->seek($query, $row);











		$result = true;

foreach($this->query_objects as $query)
{
if(!$query->closeCursor())
{
$result = false;
}
}

return $result;

	}

/**
* Return the number of rows resulting from a query.
*

	}

/**
* Return the number of rows resulting from a query.
*

	 * @param resource The query data.

	 * @param PDOStatement $query The query data.

	 * @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)

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	/**
* Return the last id number of inserted data.
*

	/**
* Return the last id number of inserted data.
*

 
	 * @param string $name

	 * @return int The id number.
*/
function insert_id($name="")

	 * @return int The id number.
*/
function insert_id($name="")

Zeile 354Zeile 407
	/**
* Return an error number.
*

	/**
* Return an error number.
*

 
	 * @param PDOStatement $query

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

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

	 */
function error_number($query="")
{
if(!$query)
{
$query = $this->db->last_query;
}

$this->error_number = $this->db->error_number($query);


	 */
function error_number($query=null)
{
if($query == null)
{
$query = $this->db->last_query;
}

$this->error_number = $this->db->error_number($query);


		return $this->error_number;
}

		return $this->error_number;
}





	/**
* Return an error string.
*

	/**
* Return an error string.
*

 
	 * @param PDOStatement $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($this->error_number != "")
{

	{
if($this->error_number != "")
{

			if(!$query)

			if($query == null)

			{
$query = $this->db->last_query;
}

			{
$query = $this->db->last_query;
}





			$error_string = $this->db->error_string($query);
$this->error_number = "";

return $error_string;

			$error_string = $this->db->error_string($query);
$this->error_number = "";

return $error_string;

		}



		}

return '';

	}

/**
* 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 PDOStatement $query
* @param string $error
* @param int $error_no

	 */

	 */

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

	function error($string="", $query=null, $error="", $error_no=0)

	{

	{

		$this->db->roll_back();


 
		if($this->error_reporting)
{

		if($this->error_reporting)
{

			if(!$query)

			if($query == null)

			{
$query = $this->db->last_query;
}


			{
$query = $this->db->last_query;
}


			if($error_no == "")

			if($error_no == 0)

			{
$error_no = $this->error_number($query);
}

			{
$error_no = $this->error_number($query);
}

Zeile 442Zeile 500
	/**
* Returns the number of affected rows in a query.
*

	/**
* Returns the number of affected rows in a query.
*

 
	 * @param PDOStatement $query

	 * @return int The number of affected rows.

	 * @return int The number of affected rows.

	 */
function affected_rows($query="")
{
if(!$query)
{
$query = $this->db->last_query;
}

	 */
function affected_rows($query=null)
{
if($query == null)
{
$query = $this->db->last_query;
}


return $this->db->affected_rows($query);
}


return $this->db->affected_rows($query);
}

Zeile 457Zeile 516
	/**
* Return the number of fields.
*

	/**
* Return the number of fields.
*

	 * @param resource The query data.

	 * @param PDOStatement $query The query data.

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

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

Zeile 468Zeile 527
		}

return $this->db->num_fields($query);

		}

return $this->db->num_fields($query);

	}

/**
* 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 492Zeile 551
		while($table = $this->fetch_array($query))
{
$tables[] = $table['tbl_name'];

		while($table = $this->fetch_array($query))
{
$tables[] = $table['tbl_name'];

		}

		}

		$query->closeCursor();
return $tables;
}

		$query->closeCursor();
return $tables;
}

Zeile 500Zeile 559
	/**
* 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 512Zeile 571
		if($exists > 0)
{
return true;

		if($exists > 0)
{
return true;

		}

		}

		else
{
return false;

		else
{
return false;

Zeile 522Zeile 581
	/**
* 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 = $this->query("PRAGMA table_info('{$this->table_prefix}{$table}')");

	 * @return boolean True when exists, false if not.
*/
function field_exists($field, $table)
{
$query = $this->query("PRAGMA table_info('{$this->table_prefix}{$table}')");





		$exists = 0;

while($row = $this->fetch_array($query))

		$exists = 0;

while($row = $this->fetch_array($query))

		{

		{

			if($row['name'] == $field)
{
++$exists;
}

			if($row['name'] == $field)
{
++$exists;
}

		}

		}


$query->closeCursor();

if($exists > 0)


$query->closeCursor();

if($exists > 0)

		{

		{

			return true;

			return true;

		}
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 PDOStatement $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;
}
else
{
$shutdown_queries[] = $query;

			$shutdown_queries[$name] = $query;
}
else
{
$shutdown_queries[] = $query;

		}

		}

	}

/**
* 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.
* @return resource The query data.

	 * @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 PDOStatement The query data.

	 */
function simple_select($table, $fields="*", $conditions="", $options=array())
{
$query = "SELECT ".$fields." FROM ".$this->table_prefix.$table;

	 */
function simple_select($table, $fields="*", $conditions="", $options=array())
{
$query = "SELECT ".$fields." FROM ".$this->table_prefix.$table;





		if($conditions != "")
{
$query .= " WHERE ".$conditions;

		if($conditions != "")
{
$query .= " WHERE ".$conditions;

		}


		}


		if(isset($options['group_by']))
{
$query .= " GROUP BY ".$options['group_by'];

		if(isset($options['group_by']))
{
$query .= " GROUP BY ".$options['group_by'];

Zeile 619Zeile 678
	/**
* 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.
* @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.
* @return int|bool The insert ID if available or false if an error is found

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

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

Zeile 645Zeile 704
			}
else
{

			}
else
{

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

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

			}
}


			}
}


Zeile 663Zeile 722
	/**
* 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 673Zeile 732

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 695Zeile 754
				}
else
{

				}
else
{

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

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

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

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

Zeile 713Zeile 772
	/**
* 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.
* @return resource The query data.

	 * @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 PDOStatement The query data.

	 */
function update_query($table, $array, $where="", $limit="", $no_quote=false)
{

	 */
function update_query($table, $array, $where="", $limit="", $no_quote=false)
{

Zeile 751Zeile 810
			}
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))
{


if(!empty($where))
{

Zeile 762Zeile 823
		}

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

		}

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

		$query->closeCursor();

		$query->closeCursor();

		return $query;

		return $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.
* @return resource The query data.

	 * @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 PDOStatement The query data.

	 */
function delete_query($table, $where="", $limit="")
{

	 */
function delete_query($table, $where="", $limit="")
{

Zeile 785Zeile 866
		$query = $this->query("DELETE FROM {$this->table_prefix}$table $query");
$query->closeCursor();
return $query;

		$query = $this->query("DELETE FROM {$this->table_prefix}$table $query");
$query->closeCursor();
return $query;

	}

/**

	}

/**

	 * Escape a string
*

	 * Escape a string
*

	 * @param string The string to be escaped.

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

	 * @return string The escaped string.
*/
function escape_string($string)
{
$string = $this->db->escape_string($string);
return $string;

	 * @return string The escaped string.
*/
function escape_string($string)
{
$string = $this->db->escape_string($string);
return $string;

	}

/**

	}

/**

	 * Serves no purposes except compatibility
*

	 * Serves no purposes except compatibility
*

 
	 * @param PDOStatement $query
* @return boolean Returns true on success, false on failure

	 */
function free_result($query)

	 */
function free_result($query)

	{
return;
}

/**

	{
return true;
}

/**

	 * 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 SQLLite.

	}

/**
* Gets the current version of SQLLite.

	 *

	 *

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

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

Zeile 831Zeile 914
			return $this->version;
}
$this->version = $this->db->get_attribute("ATTR_SERVER_VERSION");

			return $this->version;
}
$this->version = $this->db->get_attribute("ATTR_SERVER_VERSION");





		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)
{

		$query = $this->query("VACUUM ".$this->table_prefix.$table."");
$query->closeCursor();

		// SQLite doesn't support table level optimization.
// Using `VACUUM [main | $db_name]` may also be blocked by any opened query cursor, hence generating an error.

	}

/**
* 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 860Zeile 943
	/**
* 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.
* @return string The MySQL command to create the specified table.

	 * @param string $table The name of the table.
* @return string The SQLite command to create the specified table.

	 */
function show_create_table($table)
{

	 */
function show_create_table($table)
{

Zeile 880Zeile 963
	/**
* 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)
{

		$old_tbl_prefix = $this->table_prefix;
$this->set_table_prefix("");
$query = $this->simple_select("sqlite_master", "sql", "type = 'table' AND name = '{$old_tbl_prefix}{$table}'");
$this->set_table_prefix($old_tbl_prefix);
$table = trim(preg_replace('#CREATE\s+TABLE\s+"?'.$this->table_prefix.$table.'"?#i', '', $this->fetch_field($query, "sql")));
$query->closeCursor();

preg_match('#\((.*)\)#s', $table, $matches);


		$query = $this->write_query("PRAGMA TABLE_INFO('".$this->table_prefix.$table."')");









		$field_info = array();

		$field_info = array();

		$table_cols = explode(',', trim($matches[1]));
foreach($table_cols as $declaration)

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


		{

		{

			$entities = preg_split('#\s+#', trim($declaration));
$column_name = preg_replace('/"?([^"]+)"?/', '\1', $entities[0]);












			if(!empty($field['pk']))
{
$field['_key'] = 'PRI';
$field['_extra'] = 'auto_increment';
}
else
{
$field['_key'] = '';
$field['_extra'] = '';
}

// SQLite allows NULLs in most PRIMARY KEY columns due to a bug in early versions, even in an INTEGER PRIMARY KEY column, read https://sqlite.org/lang_createtable.html for details. We won't fix this for consistency among other database engines.
$field['_nullable'] = $field['notnull'] ? 'NO' : 'YES';





			$field_info[] = array('Extra' => $entities[1], 'Field' => $column_name);








			$field_info[] = array(
'Field' => $field['name'],
'Type' => $field['type'],
'Null' => $field['_nullable'],
'Key' => $field['_key'],
'Default' => $field['dflt_value'],
'Extra' => $field['_extra'],
);

		}

		}



		$query->closeCursor();

		return $field_info;
}

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

		return $field_info;
}

/**
* 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="")

Zeile 922Zeile 1014
	/**
* 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.

	 * @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.
*/


Zeile 934Zeile 1026
	/**
* 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)

Zeile 945Zeile 1037
	/**
* 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 957Zeile 1050
	/**
* 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 969Zeile 1062
	/**
* 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 980Zeile 1074
	/**
* 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)
{

Zeile 995Zeile 1089
			$table_prefix = $this->table_prefix;
}


			$table_prefix = $this->table_prefix;
}


 
		$table_prefix_bak = $this->table_prefix;
$this->table_prefix = '';

		if($hard == false)
{

		if($hard == false)
{

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

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

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

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

Zeile 1006Zeile 1102
		{
$query = $this->query('DROP TABLE '.$table_prefix.$table);
}

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

 
		$this->table_prefix = $table_prefix_bak;


if(isset($query))
{


if(isset($query))
{

Zeile 1016Zeile 1113
	/**
* 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 PDOStatement

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

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

Zeile 1039Zeile 1137
	/**
* 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|PDOStatement|bool Returns either the insert id (if a new row is inserted), the query resource (if a row is updated) or false on failure

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

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

Zeile 1065Zeile 1164
			}
else
{

			}
else
{

				$values .= $comma."'".$value."'";

				$values .= $comma.$this->quote_val($value);

			}

$comma = ',';

			}

$comma = ',';

Zeile 1121Zeile 1220
			}
else
{

			}
else
{

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

				return $this->insert_query($table, $replacements);

			}
}
}

			}
}
}

Zeile 1129Zeile 1228
	/**
* 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 1139Zeile 1238
	/**
* 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) (ignored)

	 * @param string $table The table (optional) (ignored)

	 * @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 1157Zeile 1256
	/**
* Perform an "Alter Table" query in SQLite < 3.2.0 - Code taken from http://code.jenseng.com/db/
*

	/**
* Perform an "Alter Table" query in SQLite < 3.2.0 - Code taken from http://code.jenseng.com/db/
*

	 * @param string The table (optional)
* @return integer the total size of all mysql tables or a specific table



	 * @param string $table The table (optional)
* @param string $alterdefs
* @param string $fullquery
* @return bool True on success, false on failure

	 */
function alter_table_parse($table, $alterdefs, $fullquery="")
{

	 */
function alter_table_parse($table, $alterdefs, $fullquery="")
{

Zeile 1182Zeile 1283
				$tmpname = 't'.TIME_NOW;
$origsql = trim(preg_replace("/[\s]+/", " ", str_replace(",", ", ", preg_replace("/[\(]/","( ", $row['sql'], 1))));
$createtemptableSQL = 'CREATE TEMPORARY '.substr(trim(preg_replace("'".$table."'", $tmpname, $origsql, 1)), 6);

				$tmpname = 't'.TIME_NOW;
$origsql = trim(preg_replace("/[\s]+/", " ", str_replace(",", ", ", preg_replace("/[\(]/","( ", $row['sql'], 1))));
$createtemptableSQL = 'CREATE TEMPORARY '.substr(trim(preg_replace("'".$table."'", $tmpname, $origsql, 1)), 6);

				$createindexsql = array();
$i = 0;

 
				$defs = preg_split("/[,]+/", $alterdefs, -1, PREG_SPLIT_NO_EMPTY);
$prevword = $table;
$oldcols = preg_split("/[,]+/", substr(trim($createtemptableSQL), strpos(trim($createtemptableSQL), '(')+1), -1, PREG_SPLIT_NO_EMPTY);

				$defs = preg_split("/[,]+/", $alterdefs, -1, PREG_SPLIT_NO_EMPTY);
$prevword = $table;
$oldcols = preg_split("/[,]+/", substr(trim($createtemptableSQL), strpos(trim($createtemptableSQL), '(')+1), -1, PREG_SPLIT_NO_EMPTY);

Zeile 1337Zeile 1436
				$this->error($fullquery, 'no such table: '.$table);
return false;
}

				$this->error($fullquery, 'no such table: '.$table);
return false;
}

			return true;
}
}

/**

		}
return true;
}

/**

	 * 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 PDOStatement

	 */
function drop_column($table, $column)

	 */
function drop_column($table, $column)

	{

	{

		return $this->write_query("ALTER TABLE {$this->table_prefix}{$table} DROP {$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 PDOStatement

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

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

	{

	{

		$query = $this->write_query("ALTER TABLE {$this->table_prefix}{$table} ADD {$column} {$definition}");
$query->closeCursor();
return $query;

		$query = $this->write_query("ALTER TABLE {$this->table_prefix}{$table} ADD {$column} {$definition}");
$query->closeCursor();
return $query;

	}


	}


	/**
* Modifies a column

	/**
* Modifies a column

	 *
* @param string The table
* @param string The column name
* @param string the new column definition
*/
function modify_column($table, $column, $new_definition)




	 *
* @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)

	{
// We use a rename query as both need to duplicate the table etc...

	{
// We use a rename query as both need to duplicate the table etc...

		$this->rename_column($table, $column, $column, $new_definition);

		return $this->rename_column($table, $column, $column, $new_definition, $new_not_null, $new_default_value);

	}

/**
* 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 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)

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

	{

	{

 
		if($new_not_null !== false)
{
if(strtolower($new_not_null) == "set")
{
$not_null = "NOT NULL";
}
else
{
$not_null = "NULL";
}
}
else
{
$not_null = '';
}

if($new_default_value !== false)
{
$default = "DEFAULT ".$new_default_value;
}
else
{
$default = '';
}


		// This will trigger the "alter_table_parse" function which will copy the table and rename the column

		// This will trigger the "alter_table_parse" function which will copy the table and rename the column

		return $this->write_query("ALTER TABLE {$this->table_prefix}{$table} CHANGE {$old_column} {$new_column} {$new_definition}");

		return (bool) $this->write_query("ALTER TABLE {$this->table_prefix}{$table} CHANGE {$old_column} {$new_column} {$new_definition} {$not_null} {$default}");

	}

/**
* 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 1406Zeile 1538
	/**
* 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 1437Zeile 1569
	/**
* 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 1448Zeile 1580
	/**
* 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)