经常在有的PHP开源系统中,看到有
备份数据库并导出的方法,其实代码不复杂,下面
大概讲解下,以WINDOWS为
例子,两类方法,一个是目录文件夹要有执行
脚本权限的,
一个个是没有权限的,代码如下:
一)
<?php
$username = "root";
$password = "";
$hostname = "localhost";
$dbname = "test";
$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 数据文件
$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;
}
?>
方法2 文件夹没相关权限
<?php
ob_start();
$username = "root";
$password = "";
$hostname = "localhost";
$dbname = "test";
$command = "C:\\xampp\\mysql\\bin\\mysqldump --add-drop-table --host=$hostname
--user=$username ";
if ($password)
$command.= "--password=". $password ." ";
$command.= $dbname;
system($command);
$dump = ob_get_contents();
ob_end_clean();
//不ZIP了
header('Content-Description: File Transfer');
header('Content-Type: application/octet-stream');
header('Content-Disposition: attachment; filename='.basename($dbname . "_" .
date("Y-m-d_H-i-s").".sql"));
flush();
echo $dump;
exit();]]>
?>