$_GET

$HTTP_GET_VARS [deprecated]

$_GET -- $HTTP_GET_VARS [deprecated] — HTTP GET variables

Description

An associative array of variables passed to the current script via the URL parameters.

$HTTP_GET_VARS contains the same initial information, but is not a superglobal. (Note that $HTTP_GET_VARS and $_GET are different variables and that PHP handles them as such)

Changelog

Version	Description
4.1.0	Introduced `$_GET` that deprecated `$HTTP_GET_VARS`.

Examples

Example #1 $_GET example


<?php
echo 'Hello ' . htmlspecialchars($_GET["name"]) . '!';
?>

Assuming the user entered http://example.com/?name=Hannes

The above example will output something similar to:

Hello Hannes!

Notes

Note: This is a 'superglobal', or automatic global, variable. This simply means that it is available in all scopes throughout a script. There is no need to do global $variable; to access it within functions or methods.


the addget function below actually has more use when you dont use the recursive merge as such:





<?php





function AddGet($ArrayOrString){


if(is_array($ArrayOrString))


return http_build_query(array_merge($GLOBALS['_GET'], $ArrayOrString));


parse_str($ArrayOrString, $output);


return http_build_query(array_merge($GLOBALS['_GET'], $output));


}





?>





In this case, if the key is added again with a different value it will be replaced with the new value.





addget("change=true"); // ?change=true


addget("change=false"); // ?change=false

admin at bordeux dot net
29-Jan-2009 08:03


<?php

function AddGet($ArrayOrString){

if(is_array($ArrayOrString))

return http_build_query(array_merge_recursive($GLOBALS['_GET'], $ArrayOrString));

parse_str($ArrayOrString, $output);

return http_build_query(array_merge_recursive($GLOBALS['_GET'], $output));

}

?>

<a href="index.php?<?php echo AddGet(array("change"=>true,"jump"=>"42m"));?>">URL</a>

<a href="index.php?<?php echo AddGet("change=true&jump=42m");?>">URL</a>



Assuming the user entered http://example.com/?name=Hannes 

The above example will output something similar to:

<a href="index.php?name=Hannes&change=1&jump=42m">URL</a>

<a href="index.php?name=Hannes&change=true&jump=42m">URL</a>

hmaloney at contactpoint dot com dot au
18-Sep-2008 11:38


This code is really useful for reproducing the values in the $_GET variable, and attaching that to a $_SERVER['PHP_SELF'] value when building the action value of a form tag, so that you don't lose any other values that could have been passed:



foreach ($_GET as $key => $value) {

            if ($key != "C") {  // ignore this particular $_GET value

                $querystring .= $key."=".$value;

            }

}

RJ Regalado
17-Jun-2008 02:57


Use this code if you want to retrieve your queries no matter what method is used. Hope it helps.



<?php

// By: RJ Regalado

// http://rjfiles.uni.cc/~php_examples/?id=1



$name = trim ((!empty($_POST['name'])) ? $_POST['name'] : $_GET['name'] );



if ( strlen ($name) < 1)

{

    echo "Please enter your name";

} else {

    printf ("Hello <b>%s</b><br>", $name);

    printf ("Bonjour <b>%s</b><br>", $name);

    printf ("Hallo <b>%s</b><br>", $name);

    printf ("Ciao <b>%s</b><br>", $name);

    printf ("Hola <b>%s</b><br>", $name);

}

?><hr>

<form method="POST">

    Name: <input type="text" name="name">

    <input type="submit" value="POST">

</form><hr>

<form method="GET">

    Name: <input type="text" name="name">

    <input type="submit" value="GET">

</form>

timberspine _AT_ gmail _DOT_ com
14-May-2008 11:38


Note that named anchors are not part of the query string and are never submitted by the browser to the server.



Eg.

http://www.xyz-abc.kz/index.php?title=apocalypse.php#doom



echo $_GET['title']; 



// returns "apocalypse.php" and NOT "apocalypse.php#doom"



you would be better off treating the named anchor as another query string variable like so:

http://www.xyz-abc.kz/index.php?title=apocalypse.php&na=doom



...and then retrieve it using something like this:

$url = $_GET['title']."#".$_GET['na'];



Hope this helps someone...

niwil at djes dot dk
14-May-2008 01:00


Note:

If nothing is set in the address bar, the value of $_GET['n'] will be NULL, not ""(empty string) or false.

add a note

$_POST

$_SERVER

Last updated: Fri, 03 Jul 2009