CODEWITHSUNDEEP
phpurlgetquery-string
Feras Odeh
Feras Odeh

Reputation: 9306

How to read GET URL parameter?

I'm trying to pass a URL as a URL parameter in PHP but when I try to get this parameter I get nothing

I'm using the following URL form:

http://localhost/dispatch.php?link=www.google.com

Upvotes: 238

Views: 883895

Answers (7)

MarcoS
MarcoS

Reputation: 17721

<?php
    echo $_GET['link'];
?>

or

<?php
    echo $_REQUEST['link'];
?>

do work...

Upvotes: 31

Saurabh Chandra Patel
Saurabh Chandra Patel

Reputation: 13644

$Query_String  = explode("&", explode("?", $_SERVER['REQUEST_URI'])[1] );
var_dump($Query_String)

Array ( [ 0] => link=www.google.com )

Upvotes: 5

&#193;lvaro Gonz&#225;lez
&#193;lvaro Gonz&#225;lez

Reputation: 146660

$_GET is not a function or language construct—it's just a variable (an array). Try:

<?php
echo $_GET['link'];

In particular, it's a superglobal: a built-in variable that's populated by PHP and is available in all scopes (you can use it from inside a function without the global keyword).

Since the variable might not exist, you could (and should) ensure your code does not trigger notices with:

<?php
if (isset($_GET['link'])) {
    echo $_GET['link'];
} else {
    // Fallback behaviour goes here
}

Alternatively, if you want to skip manual index checks and maybe add further validations you can use the filter extension:

<?php
echo filter_input(INPUT_GET, 'link', FILTER_SANITIZE_URL);

Last but not least, you can use the null coalescing operator (available since PHP/7.0) to handle missing parameters:

echo $_GET['link'] ?? 'Fallback value';

Upvotes: 360

Muhammad Ashikuzzaman
Muhammad Ashikuzzaman

Reputation: 3153

Use this:

$parameter = $_SERVER['QUERY_STRING'];
echo $parameter;

Or just use:

$parameter = $_GET['link'];
echo $parameter ;

Upvotes: 25

Philip E
Philip E

Reputation: 858

The accepted answer is good. But if you have a scenario like this:

http://www.mydomain.me/index.php?state=California.php#Berkeley

You can treat the named anchor as a query string like this:

http://www.mydomain.me/index.php?state=California.php&city=Berkeley

Then, access it like this:

$Url = $_GET['state']."#".$_GET['city'];

Upvotes: 11

user235510
user235510

Reputation: 51

I was getting nothing for any $_GET["..."] (e.g print_r($_GET) gave an empty array) yet $_SERVER['REQUEST_URI'] showed stuff should be there. In the end it turned out that I was only getting to the web page because my .htaccess was redirecting it there (my 404 handler was the same .php file, and I had made a typo in the browser when testing).

Simply changing the name meant the same php code worked once the 404 redirection wasn't kicking in!

So there are ways $_GET can return nothing even though the php code may be correct.

Upvotes: 5

patrick
patrick

Reputation: 11731

To make sure you're always on the safe side, without getting all kinds of unwanted code insertion use FILTERS:

echo filter_input(INPUT_GET,"link",FILTER_SANITIZE_STRING);

More reading on php.net function filter_input, or check out the description of the different filters

Upvotes: 21

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