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php database backup script
The code is as follows:
// Backup database
$host = "localhost";
$user = "root"; //Database account
$password = ""; //Database password
$dbname = "mysql"; //Database name
// The account number, password, and name here are all passed from the page
if (!mysql_connect($host, $user, $password)) // Connect to mysql database
{
echo 'Database connection failed, please check and try again';
exit;
}
if (!mysql_select_db($dbname)) // Whether the database exists
{
echo 'Database does not exist:' . $dbname . ', please check and try again';
exit;
}
mysql_query("set names 'utf8'");
$mysql = "set charset utf8; ";
$q1 = mysql_query("show tables");
while ($t = mysql_fetch_array($q1))
{
$table = $t[0];
$q2 = mysql_query("show create table `$table`");
$sql = mysql_fetch_array($q2);
$mysql .= $sql['Create Table'] . "; ";
$q3 = mysql_query("select * from `$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); ";
}
}
$filename = $dbname . date('Ymjgi') . ".sql"; //Storage path, stored in the outermost layer of the project by default
$fp = fopen($filename, 'w');
fputs($fp, $mysql);
fclose($fp);
echo "Data backup successful";
?>