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<?php $array1 = array(0, 7, 5, 0); $array2 = array(2, 6, 10, 0, 5); $array3 = array(4, 8, 15, 10); $array4 = array(6, 7, 20, 10, 15); var_export( array_map( fn(...$col) => array_sum($col) / count(array_filter($col, fn($v) => !is_null($v))), $array1, $array2, $array3, $array4 ) );
Output for git.master, git.master_jit, rfc.property-hooks
array ( 0 => 3, 1 => 7, 2 => 12.5, 3 => 5, 4 => 10, )

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