Fatal error: Uncaught TypeError: call_user_func_array(): Argument #1 ($callback) must be a valid callback, function "echo" not found or invalid function name in /in/IP0tS:4
Stack trace:
#0 {main}
thrown in /in/IP0tS on line 4
Process exited with code 255.
Output for 8.0.0 - 8.0.9
Fatal error: Uncaught TypeError: call_user_func_array(): Argument #1 ($function) must be a valid callback, function "echo" not found or invalid function name in /in/IP0tS:4
Stack trace:
#0 {main}
thrown in /in/IP0tS on line 4
Process exited with code 255.
Warning: call_user_func_array(): First argument is expected to be a valid callback, 'echo' was given in /in/IP0tS on line 4
Output for 4.3.2 - 4.3.11, 4.4.0 - 4.4.9
Warning: call_user_func_array(): First argumented is expected to be a valid callback, 'echo' was given in /in/IP0tS on line 4
Output for 4.3.0 - 4.3.1
Warning: call_user_func_array() [http://www.php.net/function.call-user-func-array]: First argumented is expected to be a valid callback, 'echo' was given in /in/IP0tS on line 4