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<?php $input = [1, 1, 1, 2, 2, 2, 1, 1, 2, 2, 1]; $output = []; $idx = -1; $prev = null; foreach($input as $val) { if($prev !== $val) { ++$idx; } $output[$idx][] = $val; $prev = $val; } print_r($output);
Output for git.master, git.master_jit, rfc.property-hooks
Array ( [0] => Array ( [0] => 1 [1] => 1 [2] => 1 ) [1] => Array ( [0] => 2 [1] => 2 [2] => 2 ) [2] => Array ( [0] => 1 [1] => 1 ) [3] => Array ( [0] => 2 [1] => 2 ) [4] => Array ( [0] => 1 ) )

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