如何一键导出MySQL数据库

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有时候,你的用户要求添加一个选项,导出整个数据库到一个SQL文件。虽然phpMyAdmin,以及Navicat有这个功能,但你的用户想要更简单点怎么办?

以下是如何一键导出MySQL数据库的php代码。

新建一个名为backup.php的文件,复制粘贴以下代码,然后编辑数据库连接设置和mysqldump的路径。有必要的话,你还可以添加一个backup.php超链接到你的程序里:

<A href="backup.php">导出整个数据库</A>


 

请注意,第一个php代码执行的时候,会导出zip压缩后的sql文件,所以此代码所在文件夹需要可写的权限。
如果你没有写的权限,请使用第二个php代码,缺点是导出的sql文件不会被zip压缩。

此代码需要可写权限:

<?php   $username = "root";  $password = "";  $hostname = "localhost";  $dbname   = "cars";   // if mysqldump is on the system path you do not need to specify the full path // simply use "mysqldump --add-drop-table ..." in this case $dumpfname = $dbname . "_" . date("Y-m-d_H-i-s").".sql"; $command = "C:\\xampp\\mysql\\bin\\mysqldump --add-drop-table --host=$hostname     --user=$username "; if ($password)          $command.= "--password=". $password ." ";  $command.= $dbname; $command.= " > " . $dumpfname; system($command);   // zip the dump file $zipfname = $dbname . "_" . date("Y-m-d_H-i-s").".zip"; $zip = new ZipArchive(); if($zip->open($zipfname,ZIPARCHIVE::CREATE))  {    $zip->addFile($dumpfname,$dumpfname);    $zip->close(); }   // read zip file and send it to standard output if (file_exists($zipfname)) {     header('Content-Description: File Transfer');     header('Content-Type: application/octet-stream');     header('Content-Disposition: attachment; filename='.basename($zipfname));     flush();     readfile($zipfname);     exit; } ?> 


此代码不需要可写权限:

<?php ob_start();   $username = "root";  $password = "";  $hostname = "localhost";  $dbname   = "cars";   // if mysqldump is on the system path you do not need to specify the full path // simply use "mysqldump --add-drop-table ..." in this case $command = "C:\\xampp\\mysql\\bin\\mysqldump --add-drop-table --host=$hostname     --user=$username "; if ($password)          $command.= "--password=". $password ." ";  $command.= $dbname; system($command);   $dump = ob_get_contents();  ob_end_clean();   // send dump file to the output header('Content-Description: File Transfer'); header('Content-Type: application/octet-stream'); header('Content-Disposition: attachment; filename='.basename($dbname . "_" .      date("Y-m-d_H-i-s").".sql")); flush(); echo $dump; exit();]]> ?>

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