Question

I am trying to validate if a domain does have GET parameters with preg_match and and a REGEX, which i require it to have for my purposes.

What I have got working is validating a domain without GET parameters like so:

if (preg_match("/^[a-z0-9]+([\-\.]{1}[a-z0-9]+)*\.[a-z]{2,5}$/", 'domain.com')) {
        echo 'true';
} else {
        echo 'false';
}

I get true for this test.

So far so good. What I am having trouble with is adding in the GET parameters, Amongst a number of REGEX’s I have tried with still no luck is the following:

if (preg_match("/^[a-z0-9]+([\-\.]{1}[a-z0-9]+)*\.[a-z]{2,5}([/?].*)?$/", 'domain.com?test=test')) {
        echo 'true';
} else {
        echo 'false';
}

Here i get false returned and hence am not able to validate a domain with GET parameters which are required.

Any assistance will be much appreciated ^^

Regards

Answer 1

This code is not tested, but I think it should work:

$pattern = "([a-z0-9-.]*)\.([a-z]{2,3})"; //Host
$pattern .= "(\?[a-z+&\$_.-][a-z0-9;:@&%=+\/\$_.-]*)?"; //Get requests
if (preg_match($pattern, 'domain.com?test=test')) {
        echo 'true';
} else {
        echo 'false';
}