Fatal error: Uncaught Error: Call to undefined function mysql_connect() in F:\phpStudy\PHPTutorial\WWW\lcjtgc\source\core\class.mysql.php:22 Stack trace: #0 F:\phpStudy\PHPTutorial\WWW\lcjtgc\source\core\run.php(69): chency_mysql->connect('127.0.0.1', 'root', '123456', 'lcjtgc', 'utf8', 0, true) #1 F:\phpStudy\PHPTutorial\WWW\lcjtgc\product.php(12): require('F:\\phpStudy\\PHP...') #2 {main} thrown in F:\phpStudy\PHPTutorial\WWW\lcjtgc\source\core\class.mysql.php on line 22