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<?php $a = ['a' => 5, 'b' => 10]; $f = function ($value, $key) { return $key === 'a' && $value = 5; }; var_dump(array_filter($a, $f, ARRAY_FILTER_USE_BOTH));
Output for git.master, git.master_jit, rfc.property-hooks
array(1) { ["a"]=> int(5) }

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