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<?php $array = [1, 2, 3, 4, 6, 7, 9, 10, 11]; $result = []; $index = 0; foreach ($array as $i => $value) { $result[$index += ($i && $value !== $array[$i - 1] + 1)][] = $value; } var_export($result);
Output for git.master, git.master_jit, rfc.property-hooks
array ( 0 => array ( 0 => 1, 1 => 2, 2 => 3, 3 => 4, ), 1 => array ( 0 => 6, 1 => 7, ), 2 => array ( 0 => 9, 1 => 10, 2 => 11, ), )

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