Fatal error: Uncaught Error: Call to undefined function isMobile() in /data/mystack/sites/www.fjckw.org/www/phpcms/modules/yzb/exam.php:250 Stack trace: #0 /data/mystack/sites/www.fjckw.org/www/phpcms/libs/classes/application.class.php(31): exam->detail() #1 /data/mystack/sites/www.fjckw.org/www/phpcms/libs/classes/application.class.php(19): application->init() #2 /data/mystack/sites/www.fjckw.org/www/phpcms/base.php(146): application->__construct() #3 /data/mystack/sites/www.fjckw.org/www/phpcms/base.php(95): pc_base::_load_class('application', 'libs/classes', 1) #4 /data/mystack/sites/www.fjckw.org/www/phpcms/base.php(85): pc_base::load_sys_class('application') #5 /data/mystack/sites/www.fjckw.org/www/index.php(16): pc_base::creat_app() #6 {main} thrown in /data/mystack/sites/www.fjckw.org/www/phpcms/modules/yzb/exam.php on line 250