Modules

Database_MySQL
extends Kohana_Database_MySQL
extends Database
extends Kohana_Database

MySQL database connection.

package
Kohana/Database
category
Drivers
author
Kohana Team
copyright
© 2008-2009 Kohana Team
license
http://kohanaphp.com/license

Class declared in MODPATH/database/classes/database/mysql.php on line 3.

Constants

SELECT

integer 1

INSERT

integer 2

UPDATE

integer 3

DELETE

integer 4

Properties

public static string $default

default instance name

string(7) "default"

public static array $instances

Database instances

array(0) 

public string $last_query

the last query executed

protected $_config

protected $_connection

protected $_connection_id

protected static $_current_databases

array(0) 

protected $_identifier

protected $_instance

protected static $_set_names

NULL

Methods

public begin( [ string $mode = NULL ] ) (defined in Kohana_Database_MySQL)

Start a SQL transaction

Parameters

  • string $mode = NULL - Isolation level

Tags

Return Values

  • boolean

Source Code

public function begin($mode = NULL)
{
    // Make sure the database is connected
    $this->_connection or $this->connect();
 
    if ($mode AND ! mysql_query("SET TRANSACTION ISOLATION LEVEL $mode", $this->_connection))
    {
        throw new Database_Exception(':error',
            array(':error' => mysql_error($this->_connection)),
            mysql_errno($this->_connection));
    }
 
    return (bool) mysql_query('START TRANSACTION', $this->_connection);
}

public commit( ) (defined in Kohana_Database_MySQL)

Commit a SQL transaction

Return Values

  • boolean

Source Code

public function commit()
{
    // Make sure the database is connected
    $this->_connection or $this->connect();
 
    return (bool) mysql_query('COMMIT', $this->_connection);
}

public connect( ) (defined in Kohana_Database_MySQL)

Connect to the database. This is called automatically when the first query is executed.

$db->connect();

Tags

Return Values

  • void

Source Code

public function connect()
{
    if ($this->_connection)
        return;
 
    if (Database_MySQL::$_set_names === NULL)
    {
        // Determine if we can use mysql_set_charset(), which is only
        // available on PHP 5.2.3+ when compiled against MySQL 5.0+
        Database_MySQL::$_set_names = ! function_exists('mysql_set_charset');
    }
 
    // Extract the connection parameters, adding required variabels
    extract($this->_config['connection'] + array(
        'database'   => '',
        'hostname'   => '',
        'username'   => '',
        'password'   => '',
        'persistent' => FALSE,
    ));
 
    // Prevent this information from showing up in traces
    unset($this->_config['connection']['username'], $this->_config['connection']['password']);
 
    try
    {
        if ($persistent)
        {
            // Create a persistent connection
            $this->_connection = mysql_pconnect($hostname, $username, $password);
        }
        else
        {
            // Create a connection and force it to be a new link
            $this->_connection = mysql_connect($hostname, $username, $password, TRUE);
        }
    }
    catch (Exception $e)
    {
        // No connection exists
        $this->_connection = NULL;
 
        throw new Database_Exception(':error',
            array(':error' => $e->getMessage()),
            $e->getCode());
    }
 
    // \xFF is a better delimiter, but the PHP driver uses underscore
    $this->_connection_id = sha1($hostname.'_'.$username.'_'.$password);
 
    $this->_select_db($database);
 
    if ( ! empty($this->_config['charset']))
    {
        // Set the character set
        $this->set_charset($this->_config['charset']);
    }
 
    if ( ! empty($this->_config['connection']['variables']))
    {
        // Set session variables
        $variables = array();
 
        foreach ($this->_config['connection']['variables'] as $var => $val)
        {
            $variables[] = 'SESSION '.$var.' = '.$this->quote($val);
        }
 
        mysql_query('SET '.implode(', ', $variables), $this->_connection);
    }
}

public datatype( string $type ) (defined in Kohana_Database_MySQL)

Returns a normalized array describing the SQL data type

$db->datatype('char');

Parameters

  • string $type required - SQL data type

Return Values

  • array

Source Code

public function datatype($type)
{
    static $types = array
    (
        'blob'                      => array('type' => 'string', 'binary' => TRUE, 'character_maximum_length' => '65535'),
        'bool'                      => array('type' => 'bool'),
        'bigint unsigned'           => array('type' => 'int', 'min' => '0', 'max' => '18446744073709551615'),
        'datetime'                  => array('type' => 'string'),
        'decimal unsigned'          => array('type' => 'float', 'exact' => TRUE, 'min' => '0'),
        'double'                    => array('type' => 'float'),
        'double precision unsigned' => array('type' => 'float', 'min' => '0'),
        'double unsigned'           => array('type' => 'float', 'min' => '0'),
        'enum'                      => array('type' => 'string'),
        'fixed'                     => array('type' => 'float', 'exact' => TRUE),
        'fixed unsigned'            => array('type' => 'float', 'exact' => TRUE, 'min' => '0'),
        'float unsigned'            => array('type' => 'float', 'min' => '0'),
        'int unsigned'              => array('type' => 'int', 'min' => '0', 'max' => '4294967295'),
        'integer unsigned'          => array('type' => 'int', 'min' => '0', 'max' => '4294967295'),
        'longblob'                  => array('type' => 'string', 'binary' => TRUE, 'character_maximum_length' => '4294967295'),
        'longtext'                  => array('type' => 'string', 'character_maximum_length' => '4294967295'),
        'mediumblob'                => array('type' => 'string', 'binary' => TRUE, 'character_maximum_length' => '16777215'),
        'mediumint'                 => array('type' => 'int', 'min' => '-8388608', 'max' => '8388607'),
        'mediumint unsigned'        => array('type' => 'int', 'min' => '0', 'max' => '16777215'),
        'mediumtext'                => array('type' => 'string', 'character_maximum_length' => '16777215'),
        'national varchar'          => array('type' => 'string'),
        'numeric unsigned'          => array('type' => 'float', 'exact' => TRUE, 'min' => '0'),
        'nvarchar'                  => array('type' => 'string'),
        'point'                     => array('type' => 'string', 'binary' => TRUE),
        'real unsigned'             => array('type' => 'float', 'min' => '0'),
        'set'                       => array('type' => 'string'),
        'smallint unsigned'         => array('type' => 'int', 'min' => '0', 'max' => '65535'),
        'text'                      => array('type' => 'string', 'character_maximum_length' => '65535'),
        'tinyblob'                  => array('type' => 'string', 'binary' => TRUE, 'character_maximum_length' => '255'),
        'tinyint'                   => array('type' => 'int', 'min' => '-128', 'max' => '127'),
        'tinyint unsigned'          => array('type' => 'int', 'min' => '0', 'max' => '255'),
        'tinytext'                  => array('type' => 'string', 'character_maximum_length' => '255'),
        'year'                      => array('type' => 'string'),
    );
 
    $type = str_replace(' zerofill', '', $type);
 
    if (isset($types[$type]))
        return $types[$type];
 
    return parent::datatype($type);
}

public disconnect( ) (defined in Kohana_Database_MySQL)

Disconnect from the database. This is called automatically by Database::__destruct. Clears the database instance from Database::$instances.

$db->disconnect();

Return Values

  • boolean

Source Code

public function disconnect()
{
    try
    {
        // Database is assumed disconnected
        $status = TRUE;
 
        if (is_resource($this->_connection))
        {
            if ($status = mysql_close($this->_connection))
            {
                // Clear the connection
                $this->_connection = NULL;
 
                // Clear the instance
                parent::disconnect();
            }
        }
    }
    catch (Exception $e)
    {
        // Database is probably not disconnected
        $status = ! is_resource($this->_connection);
    }
 
    return $status;
}

public escape( string $value ) (defined in Kohana_Database_MySQL)

Sanitize a string by escaping characters that could cause an SQL injection attack.

$value = $db->escape('any string');

Parameters

  • string $value required - Value to quote

Return Values

  • string

Source Code

public function escape($value)
{
    // Make sure the database is connected
    $this->_connection or $this->connect();
 
    if (($value = mysql_real_escape_string( (string) $value, $this->_connection)) === FALSE)
    {
        throw new Database_Exception(':error',
            array(':error' => mysql_error($this->_connection)),
            mysql_errno($this->_connection));
    }
 
    // SQL standard is to use single-quotes for all values
    return "'$value'";
}

public list_columns( string $table [, string $like = NULL , boolean $add_prefix = bool TRUE ] ) (defined in Kohana_Database_MySQL)

Lists all of the columns in a table. Optionally, a LIKE string can be used to search for specific fields.

// Get all columns from the "users" table
$columns = $db->list_columns('users');
 
// Get all name-related columns
$columns = $db->list_columns('users', '%name%');
 
// Get the columns from a table that doesn't use the table prefix
$columns = $db->list_columns('users', NULL, FALSE);

Parameters

  • string $table required - Table to get columns from
  • string $like = NULL - Column to search for
  • boolean $add_prefix = bool TRUE - Whether to add the table prefix automatically or not

Return Values

  • array

Source Code

public function list_columns($table, $like = NULL, $add_prefix = TRUE)
{
    // Quote the table name
    $table = ($add_prefix === TRUE) ? $this->quote_table($table) : $table;
 
    if (is_string($like))
    {
        // Search for column names
        $result = $this->query(Database::SELECT, 'SHOW FULL COLUMNS FROM '.$table.' LIKE '.$this->quote($like), FALSE);
    }
    else
    {
        // Find all column names
        $result = $this->query(Database::SELECT, 'SHOW FULL COLUMNS FROM '.$table, FALSE);
    }
 
    $count = 0;
    $columns = array();
    foreach ($result as $row)
    {
        list($type, $length) = $this->_parse_type($row['Type']);
 
        $column = $this->datatype($type);
 
        $column['column_name']      = $row['Field'];
        $column['column_default']   = $row['Default'];
        $column['data_type']        = $type;
        $column['is_nullable']      = ($row['Null'] == 'YES');
        $column['ordinal_position'] = ++$count;
 
        switch ($column['type'])
        {
            case 'float':
                if (isset($length))
                {
                    list($column['numeric_precision'], $column['numeric_scale']) = explode(',', $length);
                }
            break;
            case 'int':
                if (isset($length))
                {
                    // MySQL attribute
                    $column['display'] = $length;
                }
            break;
            case 'string':
                switch ($column['data_type'])
                {
                    case 'binary':
                    case 'varbinary':
                        $column['character_maximum_length'] = $length;
                    break;
                    case 'char':
                    case 'varchar':
                        $column['character_maximum_length'] = $length;
                    case 'text':
                    case 'tinytext':
                    case 'mediumtext':
                    case 'longtext':
                        $column['collation_name'] = $row['Collation'];
                    break;
                    case 'enum':
                    case 'set':
                        $column['collation_name'] = $row['Collation'];
                        $column['options'] = explode('\',\'', substr($length, 1, -1));
                    break;
                }
            break;
        }
 
        // MySQL attributes
        $column['comment']      = $row['Comment'];
        $column['extra']        = $row['Extra'];
        $column['key']          = $row['Key'];
        $column['privileges']   = $row['Privileges'];
 
        $columns[$row['Field']] = $column;
    }
 
    return $columns;
}

public list_tables( [ string $like = NULL ] ) (defined in Kohana_Database_MySQL)

List all of the tables in the database. Optionally, a LIKE string can be used to search for specific tables.

// Get all tables in the current database
$tables = $db->list_tables();
 
// Get all user-related tables
$tables = $db->list_tables('user%');

Parameters

  • string $like = NULL - Table to search for

Return Values

  • array

Source Code

public function list_tables($like = NULL)
{
    if (is_string($like))
    {
        // Search for table names
        $result = $this->query(Database::SELECT, 'SHOW TABLES LIKE '.$this->quote($like), FALSE);
    }
    else
    {
        // Find all table names
        $result = $this->query(Database::SELECT, 'SHOW TABLES', FALSE);
    }
 
    $tables = array();
    foreach ($result as $row)
    {
        $tables[] = reset($row);
    }
 
    return $tables;
}

public query( integer $type , string $sql [, mixed $as_object = bool FALSE , array $params = NULL ] ) (defined in Kohana_Database_MySQL)

Perform an SQL query of the given type.

// Make a SELECT query and use objects for results
$db->query(Database::SELECT, 'SELECT * FROM groups', TRUE);
 
// Make a SELECT query and use "Model_User" for the results
$db->query(Database::SELECT, 'SELECT * FROM users LIMIT 1', 'Model_User');

Parameters

  • integer $type required - Database::SELECT, Database::INSERT, etc
  • string $sql required - SQL query
  • mixed $as_object = bool FALSE - Result object class string, TRUE for stdClass, FALSE for assoc array
  • array $params = NULL - Object construct parameters for result class

Return Values

  • object - Database_Result for SELECT queries
  • array - List (insert id, row count) for INSERT queries
  • integer - Number of affected rows for all other queries

Source Code

public function query($type, $sql, $as_object = FALSE, array $params = NULL)
{
    // Make sure the database is connected
    $this->_connection or $this->connect();
 
    if ( ! empty($this->_config['profiling']))
    {
        // Benchmark this query for the current instance
        $benchmark = Profiler::start("Database ({$this->_instance})", $sql);
    }
 
    if ( ! empty($this->_config['connection']['persistent']) AND $this->_config['connection']['database'] !== Database_MySQL::$_current_databases[$this->_connection_id])
    {
        // Select database on persistent connections
        $this->_select_db($this->_config['connection']['database']);
    }
 
    // Execute the query
    if (($result = mysql_query($sql, $this->_connection)) === FALSE)
    {
        if (isset($benchmark))
        {
            // This benchmark is worthless
            Profiler::delete($benchmark);
        }
 
        throw new Database_Exception(':error [ :query ]',
            array(':error' => mysql_error($this->_connection), ':query' => $sql),
            mysql_errno($this->_connection));
    }
 
    if (isset($benchmark))
    {
        Profiler::stop($benchmark);
    }
 
    // Set the last query
    $this->last_query = $sql;
 
    if ($type === Database::SELECT)
    {
        // Return an iterator of results
        return new Database_MySQL_Result($result, $sql, $as_object, $params);
    }
    elseif ($type === Database::INSERT)
    {
        // Return a list of insert id and rows created
        return array(
            mysql_insert_id($this->_connection),
            mysql_affected_rows($this->_connection),
        );
    }
    else
    {
        // Return the number of rows affected
        return mysql_affected_rows($this->_connection);
    }
}

public rollback( ) (defined in Kohana_Database_MySQL)

Rollback a SQL transaction

Return Values

  • boolean

Source Code

public function rollback()
{
    // Make sure the database is connected
    $this->_connection or $this->connect();
 
    return (bool) mysql_query('ROLLBACK', $this->_connection);
}

public set_charset( string $charset ) (defined in Kohana_Database_MySQL)

Set the connection character set. This is called automatically by Database::connect.

$db->set_charset('utf8');

Parameters

  • string $charset required - Character set name

Tags

Return Values

  • void

Source Code

public function set_charset($charset)
{
    // Make sure the database is connected
    $this->_connection or $this->connect();
 
    if (Database_MySQL::$_set_names === TRUE)
    {
        // PHP is compiled against MySQL 4.x
        $status = (bool) mysql_query('SET NAMES '.$this->quote($charset), $this->_connection);
    }
    else
    {
        // PHP is compiled against MySQL 5.x
        $status = mysql_set_charset($charset, $this->_connection);
    }
 
    if ($status === FALSE)
    {
        throw new Database_Exception(':error',
            array(':error' => mysql_error($this->_connection)),
            mysql_errno($this->_connection));
    }
}

final public __destruct( ) (defined in Kohana_Database)

Disconnect from the database when the object is destroyed.

// Destroy the database instance
unset(Database::instances[(string) $db], $db);

Calling unset($db) is not enough to destroy the database, as it will still be stored in Database::$instances.

Return Values

  • void

Source Code

final public function __destruct()
{
    $this->disconnect();
}

final public __toString( ) (defined in Kohana_Database)

Returns the database instance name.

echo (string) $db;

Return Values

  • string

Source Code

final public function __toString()
{
    return $this->_instance;
}

public count_records( mixed $table ) (defined in Kohana_Database)

Count the number of records in a table.

// Get the total number of records in the "users" table
$count = $db->count_records('users');

Parameters

  • mixed $table required - Table name string or array(query, alias)

Return Values

  • integer

Source Code

public function count_records($table)
{
    // Quote the table name
    $table = $this->quote_table($table);
 
    return $this->query(Database::SELECT, 'SELECT COUNT(*) AS total_row_count FROM '.$table, FALSE)
        ->get('total_row_count');
}

public static instance( [ string $name = NULL , array $config = NULL ] ) (defined in Kohana_Database)

Get a singleton Database instance. If configuration is not specified, it will be loaded from the database configuration file using the same group as the name.

// Load the default database
$db = Database::instance();
 
// Create a custom configured instance
$db = Database::instance('custom', $config);

Parameters

  • string $name = NULL - Instance name
  • array $config = NULL - Configuration parameters

Return Values

  • Database

Source Code

public static function instance($name = NULL, array $config = NULL)
{
    if ($name === NULL)
    {
        // Use the default instance name
        $name = Database::$default;
    }
 
    if ( ! isset(Database::$instances[$name]))
    {
        if ($config === NULL)
        {
            // Load the configuration for this database
            $config = Kohana::$config->load('database')->$name;
        }
 
        if ( ! isset($config['type']))
        {
            throw new Kohana_Exception('Database type not defined in :name configuration',
                array(':name' => $name));
        }
 
        // Set the driver class name
        $driver = 'Database_'.ucfirst($config['type']);
 
        // Create the database connection instance
        new $driver($name, $config);
    }
 
    return Database::$instances[$name];
}

public quote( mixed $value ) (defined in Kohana_Database)

Quote a value for an SQL query.

$db->quote(NULL);   // 'NULL'
$db->quote(10);     // 10
$db->quote('fred'); // 'fred'

Objects passed to this function will be converted to strings. Database_Expression objects will be compiled. Database_Query objects will be compiled and converted to a sub-query. All other objects will be converted using the __toString method.

Parameters

  • mixed $value required - Any value to quote

Tags

Return Values

  • string

Source Code

public function quote($value)
{
    if ($value === NULL)
    {
        return 'NULL';
    }
    elseif ($value === TRUE)
    {
        return "'1'";
    }
    elseif ($value === FALSE)
    {
        return "'0'";
    }
    elseif (is_object($value))
    {
        if ($value instanceof Database_Query)
        {
            // Create a sub-query
            return '('.$value->compile($this).')';
        }
        elseif ($value instanceof Database_Expression)
        {
            // Compile the expression
            return $value->compile($this);
        }
        else
        {
            // Convert the object to a string
            return $this->quote( (string) $value);
        }
    }
    elseif (is_array($value))
    {
        return '('.implode(', ', array_map(array($this, __FUNCTION__), $value)).')';
    }
    elseif (is_int($value))
    {
        return (int) $value;
    }
    elseif (is_float($value))
    {
        // Convert to non-locale aware float to prevent possible commas
        return sprintf('%F', $value);
    }
 
    return $this->escape($value);
}

public quote_column( mixed $column ) (defined in Kohana_Database)

Quote a database column name and add the table prefix if needed.

$column = $db->quote_column($column);

You can also use SQL methods within identifiers.

// The value of "column" will be quoted
$column = $db->quote_column('COUNT("column")');

Objects passed to this function will be converted to strings. Database_Expression objects will be compiled. Database_Query objects will be compiled and converted to a sub-query. All other objects will be converted using the __toString method.

Parameters

  • mixed $column required - Column name or array(column, alias)

Tags

Return Values

  • string

Source Code

public function quote_column($column)
{
    if (is_array($column))
    {
        list($column, $alias) = $column;
    }
 
    if ($column instanceof Database_Query)
    {
        // Create a sub-query
        $column = '('.$column->compile($this).')';
    }
    elseif ($column instanceof Database_Expression)
    {
        // Compile the expression
        $column = $column->compile($this);
    }
    else
    {
        // Convert to a string
        $column = (string) $column;
 
        if ($column === '*')
        {
            return $column;
        }
        elseif (strpos($column, '"') !== FALSE)
        {
            // Quote the column in FUNC("column") identifiers
            $column = preg_replace('/"(.+?)"/e', '$this->quote_column("$1")', $column);
        }
        elseif (strpos($column, '.') !== FALSE)
        {
            $parts = explode('.', $column);
 
            if ($prefix = $this->table_prefix())
            {
                // Get the offset of the table name, 2nd-to-last part
                $offset = count($parts) - 2;
 
                // Add the table prefix to the table name
                $parts[$offset] = $prefix.$parts[$offset];
            }
 
            foreach ($parts as & $part)
            {
                if ($part !== '*')
                {
                    // Quote each of the parts
                    $part = $this->_identifier.$part.$this->_identifier;
                }
            }
 
            $column = implode('.', $parts);
        }
        else
        {
            $column = $this->_identifier.$column.$this->_identifier;
        }
    }
 
    if (isset($alias))
    {
        $column .= ' AS '.$this->_identifier.$alias.$this->_identifier;
    }
 
    return $column;
}

public quote_identifier( mixed $value ) (defined in Kohana_Database)

Quote a database identifier

Objects passed to this function will be converted to strings. Database_Expression objects will be compiled. Database_Query objects will be compiled and converted to a sub-query. All other objects will be converted using the __toString method.

Parameters

  • mixed $value required - Any identifier

Return Values

  • string

Source Code

public function quote_identifier($value)
{
    if (is_array($value))
    {
        list($value, $alias) = $value;
    }
 
    if ($value instanceof Database_Query)
    {
        // Create a sub-query
        $value = '('.$value->compile($this).')';
    }
    elseif ($value instanceof Database_Expression)
    {
        // Compile the expression
        $value = $value->compile($this);
    }
    else
    {
        // Convert to a string
        $value = (string) $value;
 
        if (strpos($value, '.') !== FALSE)
        {
            $parts = explode('.', $value);
 
            foreach ($parts as & $part)
            {
                // Quote each of the parts
                $part = $this->_identifier.$part.$this->_identifier;
            }
 
            $value = implode('.', $parts);
        }
        else
        {
            $value = $this->_identifier.$value.$this->_identifier;
        }
    }
 
    if (isset($alias))
    {
        $value .= ' AS '.$this->_identifier.$alias.$this->_identifier;
    }
 
    return $value;
}

public quote_table( mixed $table ) (defined in Kohana_Database)

Quote a database table name and adds the table prefix if needed.

$table = $db->quote_table($table);

Objects passed to this function will be converted to strings. Database_Expression objects will be compiled. Database_Query objects will be compiled and converted to a sub-query. All other objects will be converted using the __toString method.

Parameters

  • mixed $table required - Table name or array(table, alias)

Tags

Return Values

  • string

Source Code

public function quote_table($table)
{
    if (is_array($table))
    {
        list($table, $alias) = $table;
    }
 
    if ($table instanceof Database_Query)
    {
        // Create a sub-query
        $table = '('.$table->compile($this).')';
    }
    elseif ($table instanceof Database_Expression)
    {
        // Compile the expression
        $table = $table->compile($this);
    }
    else
    {
        // Convert to a string
        $table = (string) $table;
 
        if (strpos($table, '.') !== FALSE)
        {
            $parts = explode('.', $table);
 
            if ($prefix = $this->table_prefix())
            {
                // Get the offset of the table name, last part
                $offset = count($parts) - 1;
 
                // Add the table prefix to the table name
                $parts[$offset] = $prefix.$parts[$offset];
            }
 
            foreach ($parts as & $part)
            {
                // Quote each of the parts
                $part = $this->_identifier.$part.$this->_identifier;
            }
 
            $table = implode('.', $parts);
        }
        else
        {
            // Add the table prefix
            $table = $this->_identifier.$this->table_prefix().$table.$this->_identifier;
        }
    }
 
    if (isset($alias))
    {
        // Attach table prefix to alias
        $table .= ' AS '.$this->_identifier.$this->table_prefix().$alias.$this->_identifier;
    }
 
    return $table;
}

public table_prefix( ) (defined in Kohana_Database)

Return the table prefix defined in the current configuration.

$prefix = $db->table_prefix();

Return Values

  • string

Source Code

public function table_prefix()
{
    return $this->_config['table_prefix'];
}

protected _select_db( string $database ) (defined in Kohana_Database_MySQL)

Select the database

Parameters

  • string $database required - Database

Return Values

  • void

Source Code

protected function _select_db($database)
{
    if ( ! mysql_select_db($database, $this->_connection))
    {
        // Unable to select database
        throw new Database_Exception(':error',
            array(':error' => mysql_error($this->_connection)),
            mysql_errno($this->_connection));
    }
 
    Database_MySQL::$_current_databases[$this->_connection_id] = $database;
}

protected __construct( ) (defined in Kohana_Database)

Stores the database configuration locally and name the instance.

This method cannot be accessed directly, you must use Database::instance.

Return Values

  • void

Source Code

protected function __construct($name, array $config)
{
    // Set the instance name
    $this->_instance = $name;
 
    // Store the config locally
    $this->_config = $config;
 
    if (empty($this->_config['table_prefix']))
    {
        $this->_config['table_prefix'] = '';
    }
 
    // Store the database instance
    Database::$instances[$name] = $this;
}

protected _parse_type( string $type ) (defined in Kohana_Database)

Extracts the text between parentheses, if any.

// Returns: array('CHAR', '6')
list($type, $length) = $db->_parse_type('CHAR(6)');

Parameters

  • string $type required - $type

Return Values

  • array - List containing the type and length, if any

Source Code

protected function _parse_type($type)
{
    if (($open = strpos($type, '(')) === FALSE)
    {
        // No length specified
        return array($type, NULL);
    }
 
    // Closing parenthesis
    $close = strrpos($type, ')', $open);
 
    // Length without parentheses
    $length = substr($type, $open + 1, $close - 1 - $open);
 
    // Type without the length
    $type = substr($type, 0, $open).substr($type, $close + 1);
 
    return array($type, $length);
}