2012-04-18 15:53:06 -04:00
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<?php
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/**
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* Query
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*
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* Free Query Builder / Database Abstraction Layer
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*
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2012-04-20 13:17:39 -04:00
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* @package Query
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* @author Timothy J. Warren
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2013-01-02 14:26:42 -05:00
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* @copyright Copyright (c) 2012 - 2013
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2012-04-18 15:53:06 -04:00
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* @link https://github.com/aviat4ion/Query
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2012-04-20 13:17:39 -04:00
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* @license http://philsturgeon.co.uk/code/dbad-license
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2012-04-18 15:53:06 -04:00
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*/
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// --------------------------------------------------------------------------
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/**
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* MySQL-specific backup, import and creation methods
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2012-04-20 13:17:39 -04:00
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*
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* @package Query
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* @subpackage Drivers
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2012-04-18 15:53:06 -04:00
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*/
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class MySQL_Util extends DB_Util {
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2012-04-19 11:42:50 -04:00
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/**
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* Save a reference to the current connection object
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*
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* @param object &$conn
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* @return void
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*/
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2012-04-18 15:53:06 -04:00
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public function __construct(&$conn)
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{
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parent::__construct($conn);
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}
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2012-04-19 11:42:50 -04:00
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// --------------------------------------------------------------------------
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2012-04-18 15:53:06 -04:00
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/**
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* Convienience public function for creating a new MySQL table
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*
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* @param string $name
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* @param array $columns
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2012-04-19 11:42:50 -04:00
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* @param array $constraints
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* @param array $indexes
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2012-04-18 15:53:06 -04:00
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*
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* @return string
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*/
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public function create_table($name, $columns, array $constraints=array(), array $indexes=array())
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{
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$column_array = array();
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// Reorganize into an array indexed with column information
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// Eg $column_array[$colname] = array(
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// 'type' => ...,
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// 'constraint' => ...,
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// 'index' => ...,
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// )
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foreach($columns as $colname => $type)
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{
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if(is_numeric($colname))
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{
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$colname = $type;
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}
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$column_array[$colname] = array();
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$column_array[$colname]['type'] = ($type !== $colname) ? $type : '';
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}
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if( ! empty($constraints))
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{
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foreach($constraints as $col => $const)
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{
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$column_array[$col]['constraint'] = "{$const} ({$col})";
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}
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}
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// Join column definitons together
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$columns = array();
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foreach($column_array as $n => $props)
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{
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$n = trim($n, '`');
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$str = "`{$n}` ";
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$str .= (isset($props['type'])) ? "{$props['type']} " : "";
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$columns[] = $str;
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}
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// Add constraints
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foreach($column_array as $n => $props)
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{
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if (isset($props['constraint']))
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{
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$columns[] = $props['constraint'];
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}
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}
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// Generate the sql for the creation of the table
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$sql = "CREATE TABLE IF NOT EXISTS `{$name}` (";
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$sql .= implode(", ", $columns);
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$sql .= ")";
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return $sql;
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}
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// --------------------------------------------------------------------------
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/**
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2012-04-20 13:17:39 -04:00
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* Convience public function for droping a table
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2012-04-18 15:53:06 -04:00
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*
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* @param string $name
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* @return string
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*/
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public function delete_table($name)
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{
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return "DROP TABLE `{$name}`";
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}
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// --------------------------------------------------------------------------
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/**
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* Create an SQL backup file for the current database's structure
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*
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* @return string
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*/
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public function backup_structure()
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{
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2012-05-15 13:35:59 -04:00
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$string = array();
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2012-05-09 13:54:38 -04:00
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// Get databases
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2012-05-15 13:35:59 -04:00
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$dbs = $this->get_dbs();
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2012-05-09 13:54:38 -04:00
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2012-05-15 13:08:35 -04:00
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foreach($dbs as &$d)
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2012-05-09 13:54:38 -04:00
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{
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2012-05-15 13:35:59 -04:00
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// Skip built-in dbs
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if ($d == 'mysql')
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{
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continue;
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}
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2012-05-09 13:54:38 -04:00
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// Get the list of tables
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2012-05-15 13:35:59 -04:00
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$tables = $this->driver_query("SHOW TABLES FROM `{$d}`");
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2012-05-09 13:54:38 -04:00
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2012-05-15 13:35:59 -04:00
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foreach($tables as &$table)
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2012-05-15 13:08:35 -04:00
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{
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2012-05-15 13:35:59 -04:00
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$array = $this->driver_query("SHOW CREATE TABLE `{$d}`.`{$table}`", FALSE);
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$string[] = $array[0]['Create Table'];
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2012-05-15 13:08:35 -04:00
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}
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2012-05-09 13:54:38 -04:00
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}
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2012-05-15 13:35:59 -04:00
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return implode("\n\n", $string);
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2012-04-18 15:53:06 -04:00
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}
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// --------------------------------------------------------------------------
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/**
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* Create an SQL backup file for the current database's data
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*
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2012-04-18 16:28:12 -04:00
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* @param array $exclude
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2012-04-18 15:53:06 -04:00
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* @return string
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*/
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2012-04-18 16:28:12 -04:00
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public function backup_data($exclude=array())
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2012-04-18 15:53:06 -04:00
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{
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2012-04-18 16:28:12 -04:00
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$tables = $this->get_tables();
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2012-04-19 08:59:10 -04:00
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// Filter out the tables you don't want
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if( ! empty($exclude))
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{
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$tables = array_diff($tables, $exclude);
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}
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$output_sql = '';
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// Select the rows from each Table
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2012-07-05 14:19:49 -04:00
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foreach($tables as $t)
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2012-04-19 08:59:10 -04:00
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{
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$sql = "SELECT * FROM `{$t}`";
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$res = $this->query($sql);
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$rows = $res->fetchAll(PDO::FETCH_ASSOC);
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$res = NULL;
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// Skip empty tables
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if (count($rows) < 1) continue;
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// Nab the column names by getting the keys of the first row
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$columns = @array_keys($rows[0]);
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$insert_rows = array();
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// Create the insert statements
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2012-07-05 14:19:49 -04:00
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foreach($rows as $row)
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2012-04-19 08:59:10 -04:00
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{
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$row = array_values($row);
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2012-07-05 14:19:49 -04:00
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// Workaround for Quercus
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foreach($row as &$r)
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{
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$r = $this->quote($r);
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}
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2012-04-19 08:59:10 -04:00
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$row = array_map('trim', $row);
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$row_string = 'INSERT INTO `'.trim($t).'` (`'.implode('`,`', $columns).'`) VALUES ('.implode(',', $row).');';
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$row = NULL;
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$insert_rows[] = $row_string;
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}
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$obj_res = NULL;
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$output_sql .= "\n\n".implode("\n", $insert_rows)."\n";
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}
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2012-04-18 16:28:12 -04:00
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2012-04-19 08:59:10 -04:00
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return $output_sql;
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2012-04-18 15:53:06 -04:00
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}
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}
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// End of mysql_util.php
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