132 lines
2.8 KiB
PHP
132 lines
2.8 KiB
PHP
<?php
|
|
/**
|
|
* Query
|
|
*
|
|
* Free Query Builder / Database Abstraction Layer
|
|
*
|
|
* @author Timothy J. Warren
|
|
* @copyright Copyright (c) 2012
|
|
* @link https://github.com/aviat4ion/Query
|
|
* @license http://philsturgeon.co.uk/code/dbad-license
|
|
*/
|
|
|
|
// --------------------------------------------------------------------------
|
|
|
|
/**
|
|
* MySQL-specific backup, import and creation methods
|
|
*/
|
|
class MySQL_Util extends DB_Util {
|
|
|
|
public function __construct(&$conn)
|
|
{
|
|
parent::__construct($conn);
|
|
}
|
|
|
|
/**
|
|
* Convienience public function for creating a new MySQL table
|
|
*
|
|
* @param string $name
|
|
* @param array $columns
|
|
* @param array $constraints=array()
|
|
* @param array $indexes=array()
|
|
*
|
|
* @return string
|
|
*/
|
|
public function create_table($name, $columns, array $constraints=array(), array $indexes=array())
|
|
{
|
|
$column_array = array();
|
|
|
|
// Reorganize into an array indexed with column information
|
|
// Eg $column_array[$colname] = array(
|
|
// 'type' => ...,
|
|
// 'constraint' => ...,
|
|
// 'index' => ...,
|
|
// )
|
|
foreach($columns as $colname => $type)
|
|
{
|
|
if(is_numeric($colname))
|
|
{
|
|
$colname = $type;
|
|
}
|
|
|
|
$column_array[$colname] = array();
|
|
$column_array[$colname]['type'] = ($type !== $colname) ? $type : '';
|
|
}
|
|
|
|
if( ! empty($constraints))
|
|
{
|
|
foreach($constraints as $col => $const)
|
|
{
|
|
$column_array[$col]['constraint'] = "{$const} ({$col})";
|
|
}
|
|
}
|
|
|
|
// Join column definitons together
|
|
$columns = array();
|
|
foreach($column_array as $n => $props)
|
|
{
|
|
$n = trim($n, '`');
|
|
|
|
$str = "`{$n}` ";
|
|
$str .= (isset($props['type'])) ? "{$props['type']} " : "";
|
|
|
|
$columns[] = $str;
|
|
}
|
|
|
|
// Add constraints
|
|
foreach($column_array as $n => $props)
|
|
{
|
|
if (isset($props['constraint']))
|
|
{
|
|
$columns[] = $props['constraint'];
|
|
}
|
|
}
|
|
|
|
// Generate the sql for the creation of the table
|
|
$sql = "CREATE TABLE IF NOT EXISTS `{$name}` (";
|
|
$sql .= implode(", ", $columns);
|
|
$sql .= ")";
|
|
|
|
return $sql;
|
|
}
|
|
|
|
// --------------------------------------------------------------------------
|
|
|
|
/**
|
|
* Convience public function for droping a MySQL table
|
|
*
|
|
* @param string $name
|
|
* @return string
|
|
*/
|
|
public function delete_table($name)
|
|
{
|
|
return "DROP TABLE `{$name}`";
|
|
}
|
|
|
|
// --------------------------------------------------------------------------
|
|
|
|
/**
|
|
* Create an SQL backup file for the current database's structure
|
|
*
|
|
* @return string
|
|
*/
|
|
public function backup_structure()
|
|
{
|
|
// @todo Implement Backup function
|
|
return '';
|
|
}
|
|
|
|
// --------------------------------------------------------------------------
|
|
|
|
/**
|
|
* Create an SQL backup file for the current database's data
|
|
*
|
|
* @return string
|
|
*/
|
|
public function backup_data()
|
|
{
|
|
// @todo Implement Backup function
|
|
return '';
|
|
}
|
|
}
|
|
// End of mysql_util.php
|