Fatal error: Uncaught Error: Call to undefined function mysql_connect() in C:\phpStudy\PHPTutorial\WWW\include\mysql_class.php:13 Stack trace: #0 C:\phpStudy\PHPTutorial\WWW\include\common.inc.php(47): dbmysql->dbconn('localhost', 'root', 'root', 'caishenweb') #1 C:\phpStudy\PHPTutorial\WWW\download\download.php(4): require_once('C:\\phpStudy\\PHP...') #2 C:\phpStudy\PHPTutorial\WWW\k3\download.php(4): require_once('C:\\phpStudy\\PHP...') #3 {main} thrown in C:\phpStudy\PHPTutorial\WWW\include\mysql_class.php on line 13