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<?php function test($a1, $a2) { if (!isset($a1)) { echo 'a1 unset'; } } test(true, true); test();
Output for 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 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 ArgumentCountError: Too few arguments to function test(), 0 passed in /in/0DikS on line 9 and exactly 2 expected in /in/0DikS:2 Stack trace: #0 /in/0DikS(9): test() #1 {main} thrown in /in/0DikS on line 2
Process exited with code 255.
Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20
Warning: Missing argument 1 for test(), called in /in/0DikS on line 9 and defined in /in/0DikS on line 2 Warning: Missing argument 2 for test(), called in /in/0DikS on line 9 and defined in /in/0DikS on line 2 a1 unset

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213.29 ms | 402 KiB | 198 Q