PHP如何实现数据库备份_PHP自动备份mysql数据库的步骤

$host = 'localhost';
$user = 'root';
$pass = 'password';
$dbname = 'mydatabase';
$backupFile = 'backup_' . date("Y-m-d_H-i-s") . '.sql';
$command = "mysqldump --host=$host --user=$user --password=$pass $dbname > $backupFile";
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                <p>if ($returnVar === 0) {
echo "数据库备份成功，文件：$backupFile";
} else {
echo "备份失败，请检查MySQL配置或权限。";
}</p>

#!/bin/bash
php /path/to/backup.php

0 2 * * * /path/to/run_backup.sh

find /path/to/backups -name "backup_*.sql" -mtime +7 -delete