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run code in 500+ PHP versions simultaneously
<?php $input_lines= array("asdf","fdas", "asds", "d fm", "dfaa", "aaaa", "aabb", "aaabb"); print_r(preg_grep('/(\p{L}).*\1/', $input_lines));
Output for git.master, git.master_jit, rfc.property-hooks
Array ( [2] => asds [4] => dfaa [5] => aaaa [6] => aabb [7] => aaabb )

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