Does trigger_error interrupt script?

Question

In runtime the log file contains the message I set to the argument of trigger_error. The page is blank after that ! Is it possible to continue code execution after trigger_error ?

Answer 1

No, trigger_error() does not stop execution unless you pass the second argument as E_USER_ERROR. By default it triggers a warning. You must have an error at some point after the call.

Trigger Warning:

trigger_error("CTest message"); // defaults to E_USER_NOTICE

Trigger Fatal Error:

trigger_error("Test message", E_USER_ERROR);

Answer 2

It depends on what the second parameter you pass to the trigger_error() function, $error_type, is. Some will display the error and stop execution, others will display an error and continue (note, the display is also based on your error_reporting and display_errors settings).

For instance, if you call:

trigger_error('This is an error', E_USER_ERROR);

Your script will stop execution.

However, if you call:

trigger_error('This is a warning', E_USER_WARNING);

Your script will not stop.

By default, trigger_error() uses E_USER_NOTICE which does not stop execution.

The full list of error types can be found here.