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<?php $a = [1, 2, 3]; unset($a[2]); print_r($a); var_dump(array_is_list($a)); echo "\n"; $a[] = 4; print_r($a); var_dump(array_is_list($a));
Output for git.master_jit, git.master, rfc.property-hooks
Array ( [0] => 1 [1] => 2 ) bool(true) Array ( [0] => 1 [1] => 2 [3] => 4 ) bool(false)

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