你的用戶可能會要求你增加一個導出整個數(shù)據(jù)庫到sql文件的一個選項，當然phpMyAdmin或者Navicat可以做到這些，但是您的用戶可能想要更簡單的方法。

創(chuàng)建一個名為backup.php的新文件，復制粘貼以下代碼。如果需要的話，編輯數(shù)據(jù)庫連接設置和mysqldump路徑。為你的應用添加一個backup.php的超級連接。

<a href="back.php">export the whole database</a>

請注意：為了保存和壓縮轉(zhuǎn)儲文件，該腳本需要一個可寫權(quán)限。如果你的腳本沒有可寫權(quán)限請使用第二個版本，唯一的缺點是無法壓縮轉(zhuǎn)儲文件。

有壓縮版本需要可寫權(quán)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;
}
?>

沒有壓縮，不需要可寫權(quán)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();]]>
?>

原文地址：http://webcheatsheet.com/php/how_to_create_a_dump_of_mysql_database_in_one_click.php