Receiving form data

In PHP, when a form is submitted with the HTTP POST method, the form data can be accessed through the $_POST superglobal array. The data is sent to the server as key-value pairs, where the key corresponds to the “name” attribute of the form element and the value is the user’s input.

To receive the form data, the PHP script must have a form element with a “name” attribute that corresponds to the key of the form data. For example, if a form has an input field with a “name” attribute of “username”, the PHP script can access the submitted value using $_POST[‘username’]. It is important to note that form data received through $_POST is not inherently secure and should be validated and sanitized before being used in any way, such as to prevent SQL injection attacks or other security vulnerabilities. Additionally, it is recommended to use HTTPS encryption to transmit the form data to further protect it from malicious attacks.