parse_url() problem when one of parameters is url

Question

I call a php script http://site.com/process.php that takes a url as one of its parameters. for=

http://site.com/process.php?for=http://www.anotherwebsite.com

I then do this and try to parse_url() but parse_url() gives a parse error.

$uri = $_SERVER['REQUEST_URI']; // /process.php?for=http://www.anotherwebsite.com
parse_url($uri);

How can I encode the for parameter either on the sending side (in the url) or on the receiving side (php) so that parse_url() understands that it's just a parameter that happens to look like a url?

What does $_GET['for'] give you? Is it the for parameter you 're interested in? — Salman Arshad
– Salman Arshad, Commented Feb 11, 2011 at 12:46

Michael Robinson · Accepted Answer · 2011-02-11 12:44:56Z

3

Before including your url as a get parameter, use urlencode

$full_url = 'http://site.com/process.php?for=' . urlencode('http://www.anotherwebsite.com');

This function is convenient when encoding a string to be used in a query part of a URL, as a convenient way to pass variables to the next page.

To reverse the result of urlencode, use urldecode. As mario pointed out in a comment below, $_GET parameters are already urldecoded.

edited Feb 11, 2011 at 12:44

answered Feb 11, 2011 at 12:39

Michael Robinson

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1 Comment

Michael Robinson Over a year ago

Learn something new everyday, thanks @mario :) Edited my answer with your information.

Radoslav Georgiev · Accepted Answer · 2011-02-11 12:41:18Z

2

Well, first you must urlencode() the for= parameter, then in process.php, you can simply do

$url = $_GET["for"];
$url = urldecode($url); // http://www.anotherwebsite.com

Here are the functions: http://php.net/manual/en/function.urlencode.php http://php.net/manual/en/function.urldecode.php

answered Feb 11, 2011 at 12:41

Radoslav Georgiev

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2 Comments

mario Over a year ago

I think the urldecode() is not useful, OP might just have to use parse_url() on $_GET["url"].

Radoslav Georgiev Over a year ago

Well, it works for me : $url = urlencode("example.com"); // http%3A%2F%2Fwww.example.com print urldecode($url); // example.com

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