<?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() => array_sum(func_get_args()) / func_num_args(), $array1, $array2, $array3, $array4 ) );
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