php数据库备份脚本
php数据库备份脚本
代码如下:
// 备份数据库
$host = "localhost";
$user = "root"; //数据库账号
$password = ""; //数据库密码
$dbname = "mysql"; //数据库名称
// 这里的账号、密码、名称都是从页面传过来的
if (!mysql_connect($host, $user, $password)) // 连接mysql数据库
{
echo '数据库连接失败,请核对后再试';
exit;
}
if (!mysql_select_db($dbname)) // 是否存在该数据库
{
echo '不存在数据库:' . $dbname . ',请核对后再试';
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"; //存放路径,默认存放到项目最外层
$fp = fopen($filename, 'w');
fputs($fp, $mysql);
fclose($fp);
echo "数据备份成功";
?>

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