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<?php $input = 'ZpglnRxqenU'; // Expected: 'Z-Pp-Ggg-Llll-Nnnnn-Rrrrrr-Xxxxxxx-Qqqqqqqq-Eeeeeeeee-Nnnnnnnnnn-Uuuuuuuuuuu' $array = []; for ($i = 0, $length = strlen($input); $i < $length; ++$i) { $array[] = str_repeat($input[$i], $i + 1); } var_export( mb_convert_case( implode('-', $array), MB_CASE_TITLE ) );
Output for git.master_jit, git.master, rfc.property-hooks
'Z-Pp-Ggg-Llll-Nnnnn-Rrrrrr-Xxxxxxx-Qqqqqqqq-Eeeeeeeee-Nnnnnnnnnn-Uuuuuuuuuuu'

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