A PHP Error was encountered

Severity: Warning

Message: Invalid argument supplied for foreach()

Filename: views/courses_detail.php

Line Number: 15

Backtrace:

File: /www/wwwroot/zhixue.org/application/views/courses_detail.php
Line: 15
Function: _error_handler

File: /www/wwwroot/zhixue.org/application/controllers/Home.php
Line: 162
Function: view

File: /www/wwwroot/zhixue.org/public/index.php
Line: 318
Function: require_once