How to Retrieve Input Field Values Using PHP\'s $_POST and $_GET?

Retrieving Input Field Value in PHP

Obtaining the value of an input field is a common task in web development. This process involves capturing the user's input and storing it for further processing.

To get the value of an input field in PHP, two superglobals can be utilized: $_POST and $_GET. The choice depends on the form's submission method, which can be either POST or GET.

Using $_POST Method

The $_POST superglobal is used when the form is submitted using the POST method. To retrieve the input field value using $_POST, follow these steps:

1. Modify the form's method to "post":

<form name="form" action="" method="post">
  <input type="text" name="subject">

2. Retrieve the input field value using the $_POST superglobal:

<?php echo $_POST['subject']; ?>

Using $_GET Method

The $_GET superglobal is used when the form is submitted using the GET method. The steps to retrieve the input field value using $_GET are similar:

1. Change the form's method to "get":

<form name="form" action="" method="get">
  <input type="text" name="subject">

2. Retrieve the input field value using the $_GET superglobal:

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

By following either of these methods, you can successfully get the value of an input field in PHP, allowing you to store and process the user's input as required.

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