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Warning: cls_mysql::connect(): Couldn't fetch mysqli in D:\phpStudy2018\PHPTutorial\WWW\yueyangshop\includes\cls_mysql.php on line 70

Warning: mysqli::set_charset(): Couldn't fetch mysqli in D:\phpStudy2018\PHPTutorial\WWW\yueyangshop\includes\cls_mysql.php on line 71

Warning: mysqli::query(): Couldn't fetch mysqli in D:\phpStudy2018\PHPTutorial\WWW\yueyangshop\includes\cls_mysql.php on line 72

Warning: mysqli::query(): Couldn't fetch mysqli in D:\phpStudy2018\PHPTutorial\WWW\yueyangshop\includes\cls_mysql.php on line 78

Fatal error: Call to a member function fetch_array() on null in D:\phpStudy2018\PHPTutorial\WWW\yueyangshop\includes\cls_mysql.php on line 79