Menu
×
   ❮     
HTML CSS JAVASCRIPT SQL PYTHON JAVA PHP HOW TO W3.CSS C C++ C# BOOTSTRAP REACT MYSQL JQUERY EXCEL XML DJANGO NUMPY PANDAS NODEJS R TYPESCRIPT ANGULAR GIT POSTGRESQL MONGODB ASP AI GO KOTLIN SASS VUE DSA GEN AI SCIPY AWS CYBERSECURITY DATA SCIENCE
     ❯   

PHP Tutorial

PHP HOME PHP Intro PHP Install PHP Syntax PHP Comments PHP Variables PHP Echo / Print PHP Data Types PHP Strings PHP Numbers PHP Casting PHP Math PHP Constants PHP Magic Constants PHP Operators PHP If...Else...Elseif PHP Switch PHP Loops PHP Functions PHP Arrays PHP Superglobals PHP RegEx

PHP Forms

PHP Form Handling PHP Form Validation PHP Form Required PHP Form URL/E-mail PHP Form Complete

PHP Advanced

PHP Date and Time PHP Include PHP File Handling PHP File Open/Read PHP File Create/Write PHP File Upload PHP Cookies PHP Sessions PHP Filters PHP Filters Advanced PHP Callback Functions PHP JSON PHP Exceptions

PHP OOP

PHP What is OOP PHP Classes/Objects PHP Constructor PHP Destructor PHP Access Modifiers PHP Inheritance PHP Constants PHP Abstract Classes PHP Interfaces PHP Traits PHP Static Methods PHP Static Properties PHP Namespaces PHP Iterables

MySQL Database

MySQL Database MySQL Connect MySQL Create DB MySQL Create Table MySQL Insert Data MySQL Get Last ID MySQL Insert Multiple MySQL Prepared MySQL Select Data MySQL Where MySQL Order By MySQL Delete Data MySQL Update Data MySQL Limit Data

PHP XML

PHP XML Parsers PHP SimpleXML Parser PHP SimpleXML - Get PHP XML Expat PHP XML DOM

PHP - AJAX

AJAX Intro AJAX PHP AJAX Database AJAX XML AJAX Live Search AJAX Poll

PHP Examples

PHP Examples PHP Compiler PHP Quiz PHP Exercises PHP Server PHP Certificate

PHP Reference

PHP Overview PHP Array PHP Calendar PHP Date PHP Directory PHP Error PHP Exception PHP Filesystem PHP Filter PHP FTP PHP JSON PHP Keywords PHP Libxml PHP Mail PHP Math PHP Misc PHP MySQLi PHP Network PHP Output Control PHP RegEx PHP SimpleXML PHP Stream PHP String PHP Variable Handling PHP XML Parser PHP Zip PHP Timezones

PHP - $_REQUEST


$_REQUEST

$_REQUEST is a PHP super global variable which contains submitted form data, and all cookie data.

In other words, $_REQUEST is an array containing data from $_GET, $_POST, and $_COOKIE.

You can access this data with the $_REQUEST keyword followed by the name of the form field, or cookie, like this:

$_REQUEST['firstname']

Using $_REQUEST on $_POST Requests

POST request are usually data submitted from an HTML form.

Here is an example of how a HTML form could look like:

HTML form

<html>
<body>

<form method="post" action="demo_request.php">
  Name: <input type="text" name="fname">
  <input type="submit">
</form>

</body>
</html>

When a user clicks the submit button, the form data is sent to a PHP file specified in the action attribute of the <form> tag.

In the action file we can use the $_REQUEST variable to collect the value of the input field.

PHP file

$name = $_REQUEST['fname'];
echo $name;

In the example below we have put the HTML form and PHP code in the same PHP file.

We have also added some extra lines for security.

Example

<html>
<body>

<form method="post" action="<?php echo $_SERVER['PHP_SELF'];?>">
  Name: <input type="text" name="fname">
  <input type="submit">
</form>

<?php
if ($_SERVER["REQUEST_METHOD"] == "POST") {
  $name = htmlspecialchars($_REQUEST['fname']);
  if (empty($name)) {
    echo "Name is empty";
  } else {
    echo $name;
  }
}
?>

</body>
</html>
Try it Yourself »

Using $_REQUEST on $_GET Requests

GET request can be form submissions as in the example above, with the method attribute of the HTML <form> element set to GET.

GET requests can also be data from a query string (information added after a URL address).

Here is an example of how an HTML hyperlink, with a query string could look like:

HTML link

<html>
<body>

<a href="demo_phpfile.php?subject=PHP&web=W3schools.com">Test $GET</a>

</body>
</html>

When a user clicks the link, the query string data is sent to demo_phpfile.php.

In the PHP file we can use the $_REQUEST variable to collect the value of the query string.

Example

The PHP file demo_phpfile.php:

<html>
<body>

<?php
echo "Study " . $_REQUEST['subject'] . " at " . $_REQUEST['web'];
?>

</body>
</html>
Try it Yourself »