Question

I have a query string like the one given below:

http://localhost/project/viewMember.php?sort=Y2xhc3M=&class=Mw==&page=9

Now variable: page in query string can be anywhere within the query string either in beginning or middle or at end (like ?page=9 or &page=9& or &page=9).

Now, I need to remove page=9 from my query string and get a valid query string.

Answer 1

Tried writing a function for this. Seems to work:

<?php

$url = "http://localhost/project/viewMember.php?sort=Y2xhc3M=&class=Mw==&page=9";
// prints http://localhost/project/viewMember.php?sort=Y2xhc3M=&class=Mw==
print changeURL($url) . "\n"; 

$url = "http://localhost/project/viewMember.php?sort=Y2xhc3M=&page=9&class=Mw==";
// prints http://localhost/project/viewMember.php?sort=Y2xhc3M=&class=Mw==
print changeURL($url) . "\n";

function changeURL($url)
{
    $arr = parse_url($url);

    $query = $arr['query'];

    $pieces = explode('&',$query);

    for($i=0;$i<count($pieces);$i++)
    {
            if(preg_match('/^page=\d+/',$pieces[$i]))
                 unset($pieces[$i]);
    }    

    $query = implode('&',$pieces);

    return "$arr[scheme]://$arr[host]$arr[user]$arr[pass]$arr[path]?$query$arr[fragment]";   
}
?>