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<?php // http://gathering.tweakers.net/forum/list_messages/1663940 function doeMaarStrict(string $str = 'Hallo wereld!!!11') { var_dump($str); } function doeMaarStrictEmptyStringDefault(string $k, bool $v = false) { var_dump(m); } doeMaarStrict(); doeMaarStrictEmptyStringDefault('test');
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
string(17) "Hallo wereld!!!11" Fatal error: Uncaught Error: Undefined constant "m" in /in/4F5X3:12 Stack trace: #0 /in/4F5X3(16): doeMaarStrictEmptyStringDefault('test') #1 {main} thrown in /in/4F5X3 on line 12
Process exited with code 255.
Output for 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
string(17) "Hallo wereld!!!11" Warning: Use of undefined constant m - assumed 'm' (this will throw an Error in a future version of PHP) in /in/4F5X3 on line 12 string(1) "m"
Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.33
string(17) "Hallo wereld!!!11" Notice: Use of undefined constant m - assumed 'm' in /in/4F5X3 on line 12 string(1) "m"
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.40
Fatal error: Default value for parameters with a class type hint can only be NULL in /in/4F5X3 on line 5
Process exited with code 255.

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