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<?php function foo(?object $bar) { } foo(new stdClass()); foo(null);
Output for 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
Output for 7.1.0 - 7.1.33
Fatal error: Uncaught TypeError: Argument 1 passed to foo() must be an instance of object or null, instance of stdClass given, called in /in/DnE91 on line 7 and defined in /in/DnE91:3 Stack trace: #0 /in/DnE91(7): foo(Object(stdClass)) #1 {main} thrown in /in/DnE91 on line 3
Process exited with code 255.
Output for 5.6.0 - 5.6.40, 7.0.0 - 7.0.33
Parse error: syntax error, unexpected '?', expecting variable (T_VARIABLE) in /in/DnE91 on line 3
Process exited with code 255.
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38
Parse error: syntax error, unexpected '?', expecting '&' or variable (T_VARIABLE) in /in/DnE91 on line 3
Process exited with code 255.
Output for 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29
Parse error: syntax error, unexpected '?', expecting '&' or T_VARIABLE in /in/DnE91 on line 3
Process exited with code 255.
Output for 5.0.0 - 5.0.5
Parse error: parse error, unexpected '?', expecting '&' or T_VARIABLE in /in/DnE91 on line 3
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected '?', expecting ')' in /in/DnE91 on line 3
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 '?', expecting ')' in /in/DnE91 on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `')'' in /in/DnE91 on line 3
Process exited with code 255.

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