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<?php $symbolstocheck = [1, 1, 3, 1, 5]; $prev = null; $keyz = -1; $res = []; foreach ($symbolstocheck as $value) { $value = (int)$value; if ($value !== $prev) { $keyz++; } $prev = $value; if (!isset($res[$keyz])) { $res[$keyz] = ''; } $res[$keyz] .= $value; } var_dump($res);
Output for git.master, git.master_jit, rfc.property-hooks
array(4) { [0]=> string(2) "11" [1]=> string(1) "3" [2]=> string(1) "1" [3]=> string(1) "5" }

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