Beautiful Way to Remove Get-Variables with PHP

Beautiful way to remove GET-variables with PHP?

Ok, to remove all variables, maybe the prettiest is

$url = strtok($url, '?');

See about strtok here.

Its the fastest (see below), and handles urls without a '?' properly.

To take a url+querystring and remove just one variable (without using a regex replace, which may be faster in some cases), you might do something like:

function removeqsvar($url, $varname) {
    list($urlpart, $qspart) = array_pad(explode('?', $url), 2, '');
    parse_str($qspart, $qsvars);
    unset($qsvars[$varname]);
    $newqs = http_build_query($qsvars);
    return $urlpart . '?' . $newqs;
}

A regex replace to remove a single var might look like:

function removeqsvar($url, $varname) {
    return preg_replace('/([?&])'.$varname.'=[^&]+(&|$)/','$1',$url);
}

Heres the timings of a few different methods, ensuring timing is reset inbetween runs.

<?php

$number_of_tests = 40000;

$mtime = microtime();
$mtime = explode(" ",$mtime);
$mtime = $mtime[1] + $mtime[0];
$starttime = $mtime;

for($i = 0; $i < $number_of_tests; $i++){
    $str = "http://www.example.com?test=test";
    preg_replace('/\\?.*/', '', $str);
}
$mtime = microtime();
$mtime = explode(" ",$mtime);
$mtime = $mtime[1] + $mtime[0];
$endtime = $mtime;
$totaltime = ($endtime - $starttime);
echo "regexp execution time: ".$totaltime." seconds; ";

$mtime = microtime();
$mtime = explode(" ",$mtime);
$mtime = $mtime[1] + $mtime[0];
$starttime = $mtime;
for($i = 0; $i < $number_of_tests; $i++){
    $str = "http://www.example.com?test=test";
    $str = explode('?', $str);
}
$mtime = microtime();
$mtime = explode(" ",$mtime);
$mtime = $mtime[1] + $mtime[0];
$endtime = $mtime;
$totaltime = ($endtime - $starttime);
echo "explode execution time: ".$totaltime." seconds; ";

$mtime = microtime();
$mtime = explode(" ",$mtime);
$mtime = $mtime[1] + $mtime[0];
$starttime = $mtime;
for($i = 0; $i < $number_of_tests; $i++){
    $str = "http://www.example.com?test=test";
    $qPos = strpos($str, "?");
    $url_without_query_string = substr($str, 0, $qPos);
}
$mtime = microtime();
$mtime = explode(" ",$mtime);
$mtime = $mtime[1] + $mtime[0];
$endtime = $mtime;
$totaltime = ($endtime - $starttime);
echo "strpos execution time: ".$totaltime." seconds; ";

$mtime = microtime();
$mtime = explode(" ",$mtime);
$mtime = $mtime[1] + $mtime[0];
$starttime = $mtime;
for($i = 0; $i < $number_of_tests; $i++){
    $str = "http://www.example.com?test=test";
    $url_without_query_string = strtok($str, '?');
}
$mtime = microtime();
$mtime = explode(" ",$mtime);
$mtime = $mtime[1] + $mtime[0];
$endtime = $mtime;
$totaltime = ($endtime - $starttime);
echo "tok execution time: ".$totaltime." seconds; ";

shows

regexp execution time: 0.14604902267456 seconds; explode execution time: 0.068033933639526 seconds; strpos execution time: 0.064775943756104 seconds; tok execution time: 0.045819044113159 seconds; 
regexp execution time: 0.1408839225769 seconds; explode execution time: 0.06751012802124 seconds; strpos execution time: 0.064877986907959 seconds; tok execution time: 0.047760963439941 seconds; 
regexp execution time: 0.14162802696228 seconds; explode execution time: 0.065848112106323 seconds; strpos execution time: 0.064821004867554 seconds; tok execution time: 0.041788101196289 seconds; 
regexp execution time: 0.14043688774109 seconds; explode execution time: 0.066350221633911 seconds; strpos execution time: 0.066242933273315 seconds; tok execution time: 0.041517972946167 seconds; 
regexp execution time: 0.14228296279907 seconds; explode execution time: 0.06665301322937 seconds; strpos execution time: 0.063700199127197 seconds; tok execution time: 0.041836977005005 seconds; 

strtok wins, and is by far the smallest code.

Function to remove GET variable with php

Instead of hacking around with regular expression you should parse the string as an url (what it is)

$string = 'index.php?properties&status=av&page=1';

$parts = parse_url($string);

$queryParams = array();
parse_str($parts['query'], $queryParams);

Now just remove the parameter

unset($queryParams['page']);

and rebuild the url

$queryString = http_build_query($queryParams);
$url = $parts['path'] . '?' . $queryString;

Strip off URL parameter with PHP

The safest "correct" method would be:

1. Parse the url into an array with parse_url()
2. Extract the query portion, decompose that into an array using parse_str()
3. Delete the query parameters you want by unset() them from the array
4. Rebuild the original url using http_build_query()

Quick and dirty is to use a string search/replace and/or regex to kill off the value.

htaccess remove get variable to make better url

These rules check the request line (e.g., "GET /index.html HTTP/1.1"), the request path is /profile.php, and if contains the query string lang=&user=, redirect the request uri from /profile.php to /profile/%1/%2, %1, %2 is the back-reference to match the grouped part ([^&]+)

RewriteCond %{THE_REQUEST} ^[A-Z]+\ /profile\.php
RewriteCond %{QUERY_STRING} lang=([^&]+)&user=([^&]+)
RewriteRule ^/?profile.php$ /profile/%1/%2 [NE,R,L,QSA]

This rule internal rewrite the URL from /profile/{lang}/{user_id} to /profile.php?lang={lang}&user_id={user_id}. So when uri /profile/en/1 is requested, the server knows the rewritten uri is /profile.php?lang=en&user_id=1.

RewriteRule ^/?profile/([^/]+)/([^/]+)$ /profile.php?lang=$1&user_id=$2 [L]

Remove GET parameter from url with php

Here's a fiddle.

Works for PHP 5.3+

// Make array from query string
// If using the url from a string
$str = "www.domain.com/blog?date[]=thedate&date[]=thesnddate&title=sometitle";
parse_str(explode("?", $str)[1], $params);

// If using the query string from the current url...
//parse_str($_SERVER['QUERY_STRING'], $params);

// Remoove one of the dates
unset($params['date'][0]);

// Re-create the url
$newDomain = "www.domain.com/blog?".http_build_query($params);

print_r($newDomain);

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