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<?php function derp(\DateTime $a, \DateTime $b) { var_dump($a, $b); } derp(new \DateTime(), null);
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Fatal error: Uncaught TypeError: derp(): Argument #2 ($b) must be of type DateTime, null given, called in /in/AEfYI on line 7 and defined in /in/AEfYI:3 Stack trace: #0 /in/AEfYI(7): derp(Object(DateTime), NULL) #1 {main} thrown in /in/AEfYI on line 3
Process exited with code 255.
Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
Fatal error: Uncaught TypeError: Argument 2 passed to derp() must be an instance of DateTime, null given, called in /in/AEfYI on line 7 and defined in /in/AEfYI:3 Stack trace: #0 /in/AEfYI(7): derp(Object(DateTime), NULL) #1 {main} thrown in /in/AEfYI on line 3
Process exited with code 255.
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40
Catchable fatal error: Argument 2 passed to derp() must be an instance of DateTime, null given, called in /in/AEfYI on line 7 and defined in /in/AEfYI on line 3
Process exited with code 255.

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