Trigger fatal error in PHP 7 (non-exception)

Question

I need to be able to trigger a fatal error in PHP 7 that is not thrown as an exception.

According to the PHP docs, most of the fatal errors have been converted to exceptions. However, I can't find any docs on which ones were and were not converted.

My Question: What is something I can do in PHP to trigger one of the fatal errors that has not been converted to an exception?

Reason: I am developing a universal error handler for an API based application. I need a test case to prove it will work as I say it does.

I dont get your question sorry - you can't catch fatal errors in PHP. If you trigger a fatal error you script will stop executing and thats it. — xate
– xate, Commented Sep 19, 2016 at 15:55
If you can't I need to be able to prove that too... although the docs I have been looking at say you can. — Nicholas Summers
– Nicholas Summers, Commented Sep 19, 2016 at 15:56
Also, you absolutely can catch the ones that are thrown as exceptions. I can already prove that. — Nicholas Summers
– Nicholas Summers, Commented Sep 19, 2016 at 15:57
try { goto b; } catch(Exception $e) { var_dump($e); } - Yes you can catch Exceptions, but no fatal errors. — xate
– xate, Commented Sep 19, 2016 at 15:58
I came here looking for the same thing. We handle fatal errors using output buffering, and on PHP < 7 we tested for these by calling Triggering_E_ERROR_for_testing_purposes(). This now triggers an exception, so it would be good to find an example that triggers a true E_ERROR error. — HappyDog
– HappyDog, Commented Jun 4, 2019 at 10:19

aland · Accepted Answer · 2022-03-16 16:03:11Z

1

You can trigger a fatal in a number of ways, calling an undefined function is one such way and pretty simple, e.g.

<?php

foo();

<br />
<b>Fatal error</b>:  Uncaught Error: Call to undefined function foo() in [...][...]:4
Stack trace:
#0 {main}
  thrown in <b>[...][...]</b> on line <b>4</b><br />

answered Mar 16, 2022 at 16:03

aland

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