php备份数据库类分享
<?php/****@name php备份数据库 *@param string$DbHost连接主机*@param string$DbUser用户名*@param string$DbPwd连接密码*@param string$DbName要备份的数据库*@param string$saveFileName 要保存的文件名, 默认文件保存在当前文件夹中,以日期作区分*@return Null*@example backupMySqlData("localhost", "root", "123456", "YourDbName");**/function backupMySqlData($DbHost, $DbUser, $DbPwd, $DbName, $saveFileName = ""){header("Content-type:text/html;charset=utf-8");error_reporting(0);set_time_limit(0);echo "数据备份中,请稍候......<br />";$link = mysql_connect($DbHost, $DbUser, $DbPwd) or die("数据库连接失败: " . mysql_error());mysql_select_db($DbName) or die("数据库连接失败: " . mysql_error());mysql_query("set names utf8");// 声明变量$isDropInfo = "";$insertSQL = "";$row= array();$tables = array();$tableStructure = array();$fileName= ($saveFileName ? $saveFileName : "MySQL_data_bakeup_") . date("YmdHis") . ".sql";// 枚举该数据库所有的表$res = mysql_query("SHOW TABLES FROM $DbName");while ($row = mysql_fetch_row($res)) {$tables[] = $row[0];}mysql_free_result($res);// 枚举所有表的创建语句foreach ($tables as $val) {$res = mysql_query("show create table $val", $link);$row = mysql_fetch_row($res);$isDropInfo = "DROP TABLE IF EXISTS `" . $val . "`;
";$tableStructure = $isDropInfo . $row[1] . ";
";file_put_contents($fileName, $tableStructure, FILE_APPEND);mysql_free_result($res);}// 枚举所有表的INSERT语句foreach ($tables as $val) {$res = mysql_query("select * from $val");// 没有数据的表不执行insertwhile ($row = mysql_fetch_row($res)) {$sqlStr = "INSERT INTO `".$val."` VALUES (";foreach($row as $v){$sqlStr .= ""$v",";}//去掉最后一个逗号$sqlStr = substr($sqlStr, 0, strlen($sqlStr) - 1);$sqlStr .= ");
";file_put_contents($fileName, $sqlStr, FILE_APPEND);}mysql_free_result($res);}echo "数据备份成功!";} // 调用此方法 backupMySqlData("localhost", "root", "123456", "YouDbName");?>以上所述就是本文的全部内容了,希望大家能够喜欢。