CODEWITHSUNDEEP
phpquery-string
Omar Abid
Omar Abid

Reputation: 15976

Adding a query string to a random URL

I want to add a query string to a URL, however, the URL format is unpredictable. The URL can be

These are the URLs I'm thinking of, but it's possible that there are other formats that I'm not aware of.

I'm wondering if there is a standard, library or a common way to do this. I'm using PHP.

Edit: I'm using Cbroe explanation and Passerby code. There is another function by Hamza but I guess it'd be better to use PHP functions and also have cleaner/shorter code.

Upvotes: 0

Views: 1727

Answers (4)

HamZa
HamZa

Reputation: 14921

Some spaghetti Code:

echo addToUrl('http://example.com/page/','myquery', 'string').'<br>';
echo addToUrl('http://example.com/page','myquery', 'string').'<br>';
echo addToUrl('http://example.com/page/wut/?aaa=2','myquery', 'string').'<br>';
echo addToUrl('http://example.com?p=page','myquery', 'string');

function addToUrl($url, $var, $val){
    $array = parse_url($url);
    if(isset($array['query'])){
        parse_str($array['query'], $values);
    }
    $values[$var] = $val;
    unset($array['query']);

    $options = '';$c = count($values) - 1;
    $i=0;
    foreach($values as $k => $v){
        if($i == $c){
            $options .= $k.'='.$v;
        }else{
            $options .= $k.'='.$v.'&';
        }
        $i++;
    }

    $return = $array['scheme'].'://'.$array['host'].(isset($array['path']) ? $array['path']: '') . '?' . $options;
    return $return;
}

Results:

http://example.com/page/?myquery=string
http://example.com/page?myquery=string
http://example.com/page/wut/?aaa=2&myquery=string
http://example.com?p=page&myquery=string

Upvotes: 1

Passerby
Passerby

Reputation: 10070

function addQuery($url,array $query)
{
    $cache=parse_url($url,PHP_URL_QUERY);
    if(empty($cache)) return $url."?".http_build_query($query);
    else return $url."&".http_build_query($query);
}

// test
$test=array("http://example.com/page/","http://example.com/page","http://example.com/?p=page");
print_r(array_map(function($v){
    return addQuery($v,array("myquery"=>"string"));
},$test));

Live demo

Upvotes: 3

Julio Mar&#237;a Meca Hansen
Julio Mar&#237;a Meca Hansen

Reputation: 1268

You should try the http_build_query() function, I think that's what you're looking for, and maybe a bit of parse_str(), too.

Upvotes: 0

C3roe
C3roe

Reputation: 96326

I'm wondering if there is a standard, library or a common way to do this. I'm using PHP.

Depends on how failsafe – and thereby more complex – you want it to be.

The simplest way would be to look for whether there’s a ? in the URL – if so, append &myquery=string, else append ?myquery=string. This should cover most cases of standards-compliant URLs just fine.

If you want it more complex, you could take the URL apart using parse_url and then parse_str, then add the key myquery with value string to the array the second function returns – and then put it all back together again, using http_build_query for the new query string part.

Upvotes: 1

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