- rand: documentation ( source)
<?php
$arr1 = array ("one", "two");
$arr2 = array ("red", "blue", "white", "green", "pink");
$arr3 = array ("1", "2", "3", "4", "5", "6", "7", "8", "9", "10", "11", "12", "13");
for ($i = 0; $i < count($arr3); $i++) {
echo $arr1[rand (0, (count($arr1) - 1))].' - '.$arr2[rand (0, (count($arr2) - 1))].' - '.$arr3[$i]."\n";
}