- in_array: documentation ( source)
- rand: documentation ( source)
<?php
$rst = array(5, 8, 9, 10, 11, 15, 22, 23, 27, 30, 33);
for ($i = 1; $i <= 39; $i++) {
if (in_array($i, $rst)) {
continue;
}
$arr[] = $i;
}
$a = rand(1, sizeof($arr));
echo $arr[$a-1] . "\n";