PHP remove all _GET variables from a URL/string apart from the first.

Question

How can I remove all GET variables from a string apart from ?v=

E.g: the below url would remove &feature=related

www.youtube.com/watch?v=PDZ_NhSSiq8&feature=related

Would this be safe to simple remove everything after the first & or is there a more robust way of doing this in PHP?

$safe_url= substr($url, 0, strpos($url, "&"));

Kyle R · Accepted Answer · 2012-02-06 09:29:02Z

3

Why not just do something like this:

$url = "http://www.youtube.com/watch?v=PDZ_NhSSiq8&feature=related";
parse_str(parse_url($url, PHP_URL_QUERY), $youtube);
$safe_url = 'http://www.youtube.com/watch?v=' . $youtube['v'];
echo $safe_url;

http://php.net/manual/en/function.parse-url.php

edited Feb 6, 2012 at 9:29

answered Feb 6, 2012 at 9:19

Kyle R

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Comments

Maxui · Accepted Answer · 2012-02-06 09:29:53Z

0

Well since $_GET is an array you could recraft the URL using $_GET[v]

something like

$newURL = $_SERVER['SERVER_NAME'].'/'.$_GET[v];

header("Location:".$newURL."");

not sure if thats 100% correct syntactically but you get the idea

answered Feb 6, 2012 at 9:29

Maxui

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2 Comments

John Magnolia Over a year ago

sadly this wouldn't work because the user is entering the URL into a form.

Maxui Over a year ago

its essentially the same answer as Kyle .. he just spoke more eloquently :D

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