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<?php declare(strict_types=1); class Foo { public function getTest($bar = null):? int { if($bar === 'test'){ return 1; } } } $test = new Foo(); var_dump($test->getTest()); var_dump($test->getTest('test'));
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6
Fatal error: Uncaught TypeError: Foo::getTest(): Return value must be of type ?int, none returned in /in/o5ufU:10 Stack trace: #0 /in/o5ufU(15): Foo->getTest() #1 {main} thrown in /in/o5ufU on line 10
Process exited with code 255.
Output for 8.3.5
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 Fatal error: Uncaught TypeError: Foo::getTest(): Return value must be of type ?int, none returned in /in/o5ufU:10 Stack trace: #0 /in/o5ufU(15): Foo->getTest() #1 {main} thrown in /in/o5ufU on line 10
Process exited with code 255.
Output for 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
Fatal error: Uncaught TypeError: Return value of Foo::getTest() must be of the type int or null, none returned in /in/o5ufU:10 Stack trace: #0 /in/o5ufU(15): Foo->getTest() #1 {main} thrown in /in/o5ufU on line 10
Process exited with code 255.
Output for 7.1.0 - 7.1.33, 7.2.0 - 7.2.33
Fatal error: Uncaught TypeError: Return value of Foo::getTest() must be of the type integer or null, none returned in /in/o5ufU:10 Stack trace: #0 /in/o5ufU(15): Foo->getTest() #1 {main} thrown in /in/o5ufU on line 10
Process exited with code 255.

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