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jaman
answered Feb 27 '23 00:00
$_POST is a superglobal variable in PHP that is used to collect data submitted via an HTML form with the HTTP POST method. It is an associative array with keys that correspond to the name attribute of each form field, and values that correspond to the data entered by the user.
For example, suppose you have an HTML form with two input fields, one for the user's name and one for their email address:
<form method="post" action="process_form.php">
<label for="name">Name:</label>
<input type="text" name="name" id="name">
<label for="email">Email:</label>
<input type="email" name="email" id="email">
<input type="submit" value="Submit">
</form>
When the user submits this form by clicking the "Submit" button, the data they entered is sent to the server using the HTTP POST method. The action attribute of the form specifies the URL of the PHP script that will process the form data. In this case, the script is process_form.php.
In the process_form.php script, you can access the form data using the $_POST superglobal variable. For example, to retrieve the user's name and email address, you can use the following code:
$name = $_POST['name'];
$email = $_POST['email'];
Note that you should always validate and sanitize user input before using it in your PHP code, to prevent security vulnerabilities such as SQL injection or cross-site scripting (XSS) attacks.