<?php //$bar = array_merge(...['a' => ['b', 'c']]); $ref = new \ReflectionFunction('array_merge'); foreach ($ref->getParameters() as $p) { var_dump($p->getName()); var_dump($p->isOptional()); var_dump($p->isVariadic()); var_dump('---'); } function foo(...$arrays): void { } foo(...['a' => ['b', 'c']]); // works array_merge(...['a' => ['b', 'c']]); // doesn't
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