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<?php $input = ["a", "b", "c"]; function search($input) { $result = $input; foreach($input as $a) foreach($input as $b) $result []= $a . $b; return array_filter(array_unique($result)); } echo json_encode(search($input));
Output for git.master, git.master_jit, rfc.property-hooks
["a","b","c","aa","ab","ac","ba","bb","bc","ca","cb","cc"]

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