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<?php $matrix = [ [1, 2, 3], [4, 5, 6], [7, 8, 9], [10, 11, 12], ]; var_export( array_map( null, ...array_chunk( array_merge(...$matrix), count($matrix) ) ) );
Output for git.master, git.master_jit, rfc.property-hooks
array ( 0 => array ( 0 => 1, 1 => 5, 2 => 9, ), 1 => array ( 0 => 2, 1 => 6, 2 => 10, ), 2 => array ( 0 => 3, 1 => 7, 2 => 11, ), 3 => array ( 0 => 4, 1 => 8, 2 => 12, ), )

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