php批量转换Mysql表引擎
有些时候可能需要批量转换Mysql表的引擎,如下为PHP操作实现
<?php/** * 批量转换Mysql表引擎 */error_reporting(E_ALL);// 数据库连接配置$host = 'localhost';$username = 'root';$passwd = '';$database = 'test';// 要转换的库名配置,多库转换增加配置元素即可$configs = array($database);// 转换配置$convert_rule = array( 'from' => 'InnoDB', 'to' => 'MyISAM');mysql_engine_convert();/** * 转换函数 */function mysql_engine_convert(){ global $host,$username,$passwd,$configs,$convert_rule; if ( ($conn = mysql_connect($host, $username, $passwd)) !== false) { foreach ($configs as $db_name) { mysql_select_db($db_name) or exit('Not found db: '. $db_name); $tables = mysql_query("SHOW FULL TABLES"); while ($table = mysql_fetch_row($tables)) { if ($table[1] === 'VIEW') continue; $sql = "SHOW TABLE STATUS from {$db_name} where Name='{$table[0]}' "; if ($result = mysql_query($sql)) { $table_status = mysql_fetch_row($result); if (strtolower($table_status[1]) == strtolower($convert_rule['from'])) mysql_query("ALTER TABLE {$table[0]} ENGINE = {$convert_rule['to']}"); } } echo $db_name,':All tables ENGINE is ',$convert_rule['to'],"\n"; } } else { echo "db error\n"; }}