<?php
$arrayA = array("ma1","ma2","ma3","ma4","ma5","ma6","ma7","ma8");
$arrayB = array("mb1","mb2","mb3","mb4","mb5","mb6","mb7","mb8");
$x = 0;
$y = 0;
foreach($arrayA as $music){
echo $music . "<br>";
$x++;
if($x == 3){
echo $arrayB[$y] . "<br>";
$y++;
$x = 0;
}
}
?>