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<?php function returnsNull(): bob { return null; } returnsNull();
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: returnsNull(): Return value must be of type bob, null returned in /in/EPBeu:4 Stack trace: #0 /in/EPBeu(7): returnsNull() #1 {main} thrown in /in/EPBeu on line 4
Process exited with code 255.
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33
Fatal error: Uncaught TypeError: Return value of returnsNull() must be an instance of bob, null returned in /in/EPBeu:4 Stack trace: #0 /in/EPBeu(7): returnsNull() #1 {main} thrown in /in/EPBeu on line 4
Process exited with code 255.
Output for 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28
Parse error: syntax error, unexpected ':', expecting '{' in /in/EPBeu on line 3
Process exited with code 255.

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