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<?php $numbers = ["12345", "12346", "12347", "12398"]; $input = "12398"; $arr = preg_grep("/". substr($input,0,3) . "/", $numbers); Var_dump($arr);
Output for git.master, git.master_jit, rfc.property-hooks
array(4) { [0]=> string(5) "12345" [1]=> string(5) "12346" [2]=> string(5) "12347" [3]=> string(5) "12398" }

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