PHP: Change URL parameter

Question

This is what I have

echo '<button><a href="'.$_SERVER['REQUEST_URI'].'&startrow='.($startrow+100).'">Next 100</a></button>';

I have 2 parameters in my url one is campaign, second is startrow, how can I just remove 'startrow' parameter and its value from the url. I want something like this.

echo '<button><a href="'.REMOVE &startrow=x($_SERVER['REQUEST_URI']).'&startrow='.($startrow+100).'">Next 100</a></button>';

When I press the next 100 button, the page reloads and it adds startrow parameter in the url hence if I pressed next 100 button 5 times, I have 5 startrow paramter in the url, so I want to remove the previous startrow parameter first then add the new one

My actual url: enquirytable.php/campaign=all&startrow=100

When I click on Next 100 button: enquirytable.php/campaign=all&startrow=100&startrow=200

What I want: enquirytable.php/campaign=all&startrow=200

which parameter you want to remove? – Sahil Gulati Nov 09 '17 at 07:26 — Sahil Gulati, Nov 09 '17 at 07:26
@Sahil Gulati , I have edited my question – Shujaat Shaikh Nov 09 '17 at 07:37 — Shujaat Shaikh, Nov 09 '17 at 07:37
I have updated my post with an example. check out that one. – Sahil Gulati Nov 09 '17 at 07:49 — Sahil Gulati, Nov 09 '17 at 07:49

Sahil Gulati · Accepted Answer · 2021-09-21T15:19:17.763

5

Probably the long one, but an accurate way. Here we are using parse_url and parse_str to achieve desired output.

Try with an example

<?php

$url="http://www.example.com/some/path?startrow=100&campaign=abc";
echo change_url_parameter($url, "startrow", 200);

function change_url_parameter($url,$parameterName,$parameterValue) {
    $url=parse_url($url);
    parse_str($url["query"],$parameters);
    unset($parameters[$parameterName]);
    $parameters[$parameterName]=$parameterValue;
    return  sprintf("%s://%s%s?%s", 
        $url["scheme"],
        $url["host"],
        $url["path"],
        http_build_query($parameters));
}

edited Sep 21 '21 at 15:19

answered Nov 09 '17 at 07:34

Sahil Gulati

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sir, this is just removing the previous paramater but not adding it again, – Shujaat Shaikh Nov 09 '17 at 07:54
@ShujaatShaikh this will remove the parameter which you want to remove and for adding that parameter you can append a parameter which you want to attach. and thats it. – Sahil Gulati Nov 09 '17 at 07:55
I have edited my question in the best possible way sir, can you plz have a look? – Shujaat Shaikh Nov 09 '17 at 07:58
@ShujaatShaikh I have updated a post in which i have defined a function where you can change url's parameter value i think that can be helpful and work for sure. – Sahil Gulati Nov 09 '17 at 08:02
Let us [continue this discussion in chat](http://chat.stackoverflow.com/rooms/158580/discussion-between-sahil-gulati-and-shujaat-shaikh). – Sahil Gulati Nov 09 '17 at 08:03
I guess return $url["scheme"].'://'.$url["host"].$url["path"]."?".http_build_query($parameters); is better – Vit Sep 21 '21 at 11:58
@Vit Thanks for suggestion :) Improved old post, with a more appropriate way. – Sahil Gulati Sep 21 '21 at 15:20

Romain Ciaccafava · Answer 2 · 2017-11-09T08:10:08.970

0

Building the URL that way is not clean, instead of having to remove some parameters, you should start from a clean route then add those needed.

You can do something like :

echo '<button><a href="'.$_SERVER['PHP_SELF'].'&startrow='.($startrow+100).'">Next 100</a></button>';

If you really want to do it with $_SERVER['REQUEST_URI'] this should work :

function getUrl($startRow) {
    $url = preg_replace('@&startnow=[\d]+@', '', $_SERVER['REQUEST_URI']);
    return $url.'&startrow='.$startRow;
}

// ...

echo '<button><a href="'.getUrl($startrow+100).'">Next 100</a></button>';

edited Nov 09 '17 at 08:10

answered Nov 09 '17 at 07:27

Romain Ciaccafava

114
8

I cannot use PHP_SELF coz I have one more parameter in the url i.e, 'campaign_type', when I use PHP_SELF, it only returns the page name without parameters @Romain Ciaccafava – Shujaat Shaikh Nov 09 '17 at 07:33
Ok, so you can concatenate this additional parameter that way : `echo '';` – Romain Ciaccafava Nov 09 '17 at 07:35
@ShujaatShaikh It would be kind to explain why. – Romain Ciaccafava Nov 09 '17 at 07:47
Actually I realized my question was incomplete, I have edited it now..it would give u a better idea – Shujaat Shaikh Nov 09 '17 at 07:49
@ShujaatShaikh I still don't understand the problem with my answer, you should try it. – Romain Ciaccafava Nov 09 '17 at 07:51
coz additionalParameter can be N no. of parameters and not fixed only 1 parameter.. – Shujaat Shaikh Nov 09 '17 at 08:00

Vit · Answer 3 · 2021-11-08T10:35:08.883

Sahil answer update, so function can consume parameters with dot and keep url fragments. PHP 7.4.

"url": "https://www.zzz.ccc/?zzz.er=ty&aa.dd=vv#123",
    "param_to_change": "zzz.er",
    "old_behave": "https://www.zzz.ccc/?zzz_er=ty&aa_dd=vv&zzz.er=4444",
    "new_behave": "https://www.zzz.ccc/?zzz.er=4444&aa.dd=vv#123"

public function change_1_url_param($url,$parameter,$parameterValue)
{
    $url_init = $url;
    $url=parse_url($url);
    parse_str($url["query"],$parameters);
    unset($parameters[$parameter]);
    $parameters[$parameter]=$parameterValue;

    $url_fragment = '';
    if(isset($url['fragment']))
       $url_fragment = '#'.$url['fragment'];

    if(mb_stripos($parameter,'.')!==false){
        $url_q = $url["query"];
        $explode_0 = explode($parameter.'=',$url_q);
        if(!isset($explode_0[1]))
            return $url_init;
        $explode_1 = explode('&',$explode_0[1]);
        $u = str_replace( $explode_1[0] , $parameterValue , $url_q );
        $u = $url["scheme"].'://'.$url["host"].$url["path"]."?".$u.$url_fragment;
    }
    else
        $u = $url["scheme"].'://'.$url["host"].$url["path"]."?".http_build_query($parameters).$url_fragment;

    return $u;
}

score 0 · Answer 4 · answered Dec 27 '22 at 06:34

0

function update_params($update) {
    return $SERVER['SCRIPT_NAME'].'?'.http_build_query(array_merge($_GET, $update));
}

echo update_params(['startrow', $startrow+100]);

answered Dec 27 '22 at 06:34

tbodt

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PHP: Change URL parameter

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