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<?php class Test { public function foo() { echo "foo", PHP_EOL; } public function __destruct() { echo "going to die", PHP_EOL; } } $t = new Test; $t->foo(); call_user_func(array($test, 'foo'));
Output for 8.0.10 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
foo Warning: Undefined variable $test in /in/NVN6N on line 18 Fatal error: Uncaught TypeError: call_user_func(): Argument #1 ($callback) must be a valid callback, first array member is not a valid class name or object in /in/NVN6N:18 Stack trace: #0 {main} thrown in /in/NVN6N on line 18 going to die
Process exited with code 255.
Output for 8.0.0 - 8.0.9
foo Warning: Undefined variable $test in /in/NVN6N on line 18 Fatal error: Uncaught TypeError: call_user_func(): Argument #1 ($function) must be a valid callback, first array member is not a valid class name or object in /in/NVN6N:18 Stack trace: #0 {main} thrown in /in/NVN6N on line 18 going to die
Process exited with code 255.
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.33
foo Notice: Undefined variable: test in /in/NVN6N on line 18 Warning: call_user_func() expects parameter 1 to be a valid callback, first array member is not a valid class name or object in /in/NVN6N on line 18 going to die
Output for 7.3.32 - 7.3.33
foo Warning: call_user_func() expects parameter 1 to be a valid callback, first array member is not a valid class name or object in /in/NVN6N on line 18 going to die
Output for 5.0.4 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
foo Notice: Undefined variable: test in /in/NVN6N on line 18 Warning: call_user_func(Array): First argument is expected to be a valid callback in /in/NVN6N on line 18 going to die
Output for 5.0.2 - 5.0.3
foo Notice: Undefined variable: test in /in/NVN6N on line 18 Warning: call_user_func(Array): First argument is expected to be a valid callback in /in/NVN6N on line 18 going to die
Output for 5.0.0 - 5.0.1
foo Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/NVN6N on line 6 PHP_EOL Notice: Undefined variable: test in /in/NVN6N on line 18 Warning: call_user_func(Array): First argument is expected to be a valid callback in /in/NVN6N on line 18 going to die Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/NVN6N on line 10 PHP_EOL
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/NVN6N on line 5
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1
Parse error: parse error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/NVN6N on line 5
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `T_OLD_FUNCTION' or `T_FUNCTION' or `T_VAR' or `'}'' in /in/NVN6N on line 5
Process exited with code 255.

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