<?php $test = new test(); $test->valid(); class test { public function valid() { $con = mysql_connect("localhost:3306", "root", "xxx333"); if (!$con) { die('Could not connect: ' . mysql_error()); } mysql_select_db("wxtest", $con); // some code mysql_query("insert into wx_article_data(ref_date) values(22);"); mysql_close($con); } }