PHP编码建议

Question

I want to transform this code in fsockopen:

$z = $_GET['z']; 
$z = str_replace(' ', '%20', $z);
if("$z")
{
$file = file("http://example.com/$z");
}else{
$file = file("http://example.com/main/");
}
$file = @implode("", $file);
$file = str_replace('/main/', '?z=main/', $file);
echo $file;

can u help me ?

Answer 1

Try this :

function replaceDomain($url = null){
    $parts = explode('.com/', $url);
    return $parts[0].'.com/index.php?z='.$parts[1];
}

$url = "http://example.com/downloads/programs/100";
echo replaceDomain($url);

OUTPUT :

http://example.com/index.php?z=downloads/programs/100