- range: documentation ( source)
- header: documentation ( source)
<?php
function is_prime($num) {
$n = $num - 1;
while ($n > 1) {
if (is_int($num / $n)) {
return false;
}
$n--;
}
return true;
}
header('Content-type: text/plain');
foreach (range(1,10) as $num) {
if (is_prime($num)) {
echo "$num is prime\n";
} else {
echo "$num is not prime\n";
}
}