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<?php $a = new stdClass; call_user_func('call_user_func','assert','echo "haha"',$a);
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
Fatal error: Uncaught TypeError: assert(): Argument #2 ($description) must be of type Throwable|string|null, stdClass given in /in/RmUJ0:4 Stack trace: #0 [internal function]: assert('echo "haha"', Object(stdClass)) #1 /in/RmUJ0(4): call_user_func('assert', 'echo "haha"', Object(stdClass)) #2 {main} thrown in /in/RmUJ0 on line 4
Process exited with code 255.
Output for 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33
Warning: Cannot call assert() with string argument dynamically in /in/RmUJ0 on line 4
Output for 7.0.0 - 7.0.20
Parse error: syntax error, unexpected 'echo' (T_ECHO), expecting ';' in /in/RmUJ0(4) : assert code on line 1 Fatal error: Object of class stdClass could not be converted to string in /in/RmUJ0 on line 4
Process exited with code 255.
Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.28
Warning: assert() expects parameter 2 to be string, object given in /in/RmUJ0 on line 4

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