Warning

Warning call_user_func_array expects parameter 1 to be a valid callback
call_user_func_array expects parameter 1 to be a valid callback
Warning call_user_func_array() expects parameter 1 to be a valid callback. This is a recurring error when dealing with actions/filter in WordPress. In...
Warning Warning call_user_func_array() expects parameter 1 to be a valid callback
Warning call_user_func_array() expects parameter 1 to be a valid callback
Warning call_user_func_array() expects parameter 1 to be a valid callback. This is a recurring error when dealing with actions/filter in WordPress. In...
Warning Default and warning messages
Default and warning messages
What is a warning message? How do you write a warning message? How do I turn off error warning? What is the difference between an error message and a ...