How Do I Retrieve Input Field Values Using PHP\'s $_GET and $_POST Superglobals?

Retrieving Input Field Value Using PHP

To retrieve the value of an input field in PHP, you can utilize superglobals such as $_POST or $_GET. These superglobals capture the values passed from HTML forms, allowing you to access form data on the server-side.

Let's consider an HTML input field as follows:

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

Using $_GET Superglobal

You can use the $_GET superglobal to retrieve the input field value if your form method is set to "get." This approach can be useful if you want to pass form data as part of the URL query string.

Form Code:

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

PHP Code to Display the Value:

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

Using $_POST Superglobal

If your form method is set to "post," you should use the $_POST superglobal. Posting form data generally offers better security and privacy, as data is not visible in the URL.

Form Code:

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

PHP Code to Display the Value:

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

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