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<?php $a = [1, 2, 3, 4, 5]; $b = array_filter($a, fn ($x) => $x <= 3); $c = array_filter($a, fn ($x) => $x >= 3); var_dump(array_is_list($a)); var_dump(array_is_list($b)); var_dump(array_is_list($c));
Output for git.master, git.master_jit, rfc.property-hooks
bool(true) bool(true) bool(false)

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