时间:2021-07-01 10:21:17 帮助过:3人阅读
php备份数据库类分享
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/** * * @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......
$link = mysql_connect($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 . "`;\r\n"; $tableStructure = $isDropInfo . $row[1] . ";\r\n";
file_put_contents($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 $val");
// 没有数据的表不执行insert while ($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); $sqlStr .= ");\r\n";
file_put_contents($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'); ?> |
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