$_POST

$HTTP_POST_VARS [deprecated]

$_POST -- $HTTP_POST_VARS [deprecated] — HTTP POST variables

Description

An associative array of variables passed to the current script via the HTTP POST method.

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

ChangeLog

Version	Description
4.1.0	Introduced `$_POST` that deprecated `$HTTP_POST_VARS`.

Examples

Example #1 $_POST example


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

Assuming the user POSTed 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.


<?php



foreach($_POST as $k=>$v) $$k=$v;

//to use $_POST["example"] as $example



foreach($_GET as $k=>$v) $$k=$v;

//to use $_GET["example"] as $example



//or better:



foreach(${"_" . $_SERVER["REQUEST_METHOD"]} as $k=>$v) $$k=$v;

//to use $_GET["example"] or $_POST["example"] as $example



?>

php dot net at bigbadaboom dot net
15-Jul-2008 09:06


Make sure your submit buttons (ie. <input type="submit"> etc) have a 'value' attribute.  If they don't, the value won't appear in $_POST and so isset($_POST["submit"]) won't work either.



Example:



<input type="submit" name="submit">



isset($_POST["submit"]) returns false



<input type="submit" name="submit" value="Next">



isset($_POST["submit"]) returns true.



This might seem obvious for text buttons since they need a label anyway.  However, if you are using image buttons, it might not occur to you that you need to set a value attribute as well.  For example, the value attribute is required in the following element if you want to be able to detect it in your script.



<input type="image" name="submit" src="next.gif" value="Next">

paul dot chubb at abs dot gov dot au
20-Jun-2008 12:49


Nasty bug in IE6, Apache2 and mod_auth_sspi. Essentially if the user presses the submit button too quickly, $_POST (and the equivalents) comes back empty. The workaround is to set Apache's KeepAliveTimeout to 1. This would mean that the user would need to push submit within a second to trigger the issue.

telconstar99 at hotnospampleasemail dot com
20-May-2008 01:49


<?

//If we submitted the form

if(isset($_POST['submitMe']))

{

     echo("Hello, " . $_POST['name'] . ", we submitted your form!");

}

//If we haven't submitted the form

else

{

?>

    <form action="<?=$_SERVER['PHP_SELF']?>" method="POST">

    <input type="text" name="name"><br>

    <input type="submit" value="submit" name="submitMe">

    </form>

<?

}

?>

add a note

$_FILES

$_GET

Last updated: Fri, 22 Aug 2008