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<?php $input = ['dir2', 'dir2_1', 'dir2_1_1']; function convert_array(array $input, array $output = []) { if (empty($input)) { return $output; } $value = array_pop($input); return convert_array($input, [$value => $output]); } var_dump(convert_array($input));
Output for git.master, git.master_jit, rfc.property-hooks
array(1) { ["dir2"]=> array(1) { ["dir2_1"]=> array(1) { ["dir2_1_1"]=> array(0) { } } } }

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