php數據庫備份腳本

// 備份數據庫
$host = "localhost";
$user = "root"; //數據庫賬號
$password = ""; //數據庫密碼
$dbname = "mysql"; //數據庫名稱
// 這里的賬號、密碼、名稱都是從頁面傳過來的
if (!mysql_connect($host, $user, $password)) // 連接mysql數據庫
{
echo '數據庫連接失敗，請核對后再試';
exit;
}
if (!mysql_select_db($dbname)) // 是否存在該數據庫
{
echo '不存在數據庫:' . $dbname . ',請核對后再試';
exit;
}
mysql_query("set names 'utf8'");
$mysql = "set charset utf8;\r\n";
$q1 = mysql_query("show tables");
while ($t = mysql_fetch_array($q1))
{
$table = $t[0];
$q2 = mysql_query("show create table `$table`");
$sql = mysql_fetch_array($q2);
$mysql .= $sql['Create Table'] . ";\r\n";
$q3 = mysql_query("select * from `$table`");
while ($data = mysql_fetch_assoc($q3))
{
$keys = array_keys($data);
$keys = array_map('addslashes', $keys);
$keys = join('`,`', $keys);
$keys = "`" . $keys . "`";
$vals = array_values($data);
$vals = array_map('addslashes', $vals);
$vals = join("','", $vals);
$vals = "'" . $vals . "'";
$mysql .= "insert into `$table`($keys) values($vals);\r\n";
}
}
$filename = $dbname . date('Ymjgi') . ".sql"; //存放路徑，默認存放到項目最外層
$fp = fopen($filename, 'w');
fputs($fp, $mysql);
fclose($fp);
echo "數據備份成功";
?>