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<?php function foo($a, $b, $c) { } foo('a', a: 'A', b: 'B');
Output for 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
Fatal error: Uncaught Error: Named parameter $a overwrites previous argument in /in/oVMLC:7 Stack trace: #0 {main} thrown in /in/oVMLC on line 7
Process exited with code 255.

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