PHP Get URL without Query String - While Modifiying existing query

Question

Long time lurker first time poster here:

I have searched high and low and am trying to keep my php script somewhat the same as it is:

$url = "https://" . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'];

however when I echo $url I need to:

1. Remove the string from www.example.com/?utm_source=etc removing everything after /? on multiple file names like www.example.com/page.htm/?utm_source=etc www.example.com/page1.htm/?utm_source=etc and so on

2. Keep the google custom search query string www.example.com/search.htm?q=term

3. Keep a couple other search string close the GSE string example

Ive seen some examples but none worked for me without making a ton of changes, surley there is a easier way. Thanks in Advance

Answer 1

This will do the job for you. I used php regex and preg_replace() predefined function for it.

Regex (Fiddle Link )

/www(\.)[A-Za-z0-9]+\.\w+(\/)(\?)?((\w)+(\.)(\w)+)?((.)+)?/i

Php example

 <?php
    $input_line = 'www.example.com/?utm_source=etc'; //Input String
    $replace_String = ''; //specify your replace string here
    $regex = preg_replace("/www(\.)[A-Za-z0-9]+\.\w+(\/)(\?)?((\w)+(\.)(\w)+)?((.)+)?/i", $replace_String, $input_line);
    print_r($regex); //this will print the output with replaced string
  ?> 

Answer 2

You need to split url into different pieces and then put all of it back together - this is the only way.

So for example if your url is

    $url = www.example.com/page1.htm/?utm_source=etc&some_key=some_key_value&someothekey=someotherid

    $url_array = explode("?",$url);

    $url_path = $url_array[0];
    $url_params = explode("&",$url_array[1]);
    $i = 0;
    foreach($url_params as $url_param){ // Let's get specific url parameter and it's value
        $i++;

        $url_key = explode("=",$url_param)[0];
        $url_value = explode("=",$url_param)[1];
        $some_key = "some_key"; 

/*
 * or use $i auto increment to find, relevant search parameter based on position e.g. 
 * if($i = 0){ // 0 is first etc.
 *    $some_key = $url_key;
 * }
 */

        // now that we have all keys - let's compare
        if($url_key === $some_key){

           $some_key_value .= $url_value; // Note the dot before ".=" so you can use it outside the loop, do the same if statements for any other keys you need 
        }     


    }

    $new_url = $url_path."?".$some_key."=".$some_key_value;