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<?php declare(strict_types=1); function f(...$args){ echo "see? arguments are optional.\n"; } f(); $ref = new ReflectionFunction('f'); var_dump($ref->getParameters()[0]->getDefaultValue());
Output for git.master, git.master_jit, rfc.property-hooks
see? arguments are optional. Fatal error: Uncaught ReflectionException: Internal error: Failed to retrieve the default value in /in/gHhJ2:8 Stack trace: #0 /in/gHhJ2(8): ReflectionParameter->getDefaultValue() #1 {main} thrown in /in/gHhJ2 on line 8
Process exited with code 255.

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