- print_r: documentation ( source)
- parse_url: documentation ( source)
<?php
$url = "http://www.groupon.com";
$url_array = parse_url($url);
echo "<pre>";
print_r($url_array);
die();
if ( $url_array = parse_url($url) ) {
if ( !isset($url_array["scheme"]) )
{
$url = "http://{$url}";
}
}