php if (preg_match("/PHP/i", file_get_contents("http://langref.org/"))) {
echo "PHP appears on langref.org";
} else {
echo "PHP doesn't appear on langref.org";
}
<?php
if (preg_match("/PHP/i", file_get_contents("http://langref.org/"))) {
echo "PHP appears on langref.org";
} else {
echo "PHP doesn't appear on langref.org";
}
?>