一键导出MySQL数据库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();]]>

?>