Search results for: "$_GET superglobal"

What potential issue could cause the $PHP_AUTH_USER variable to be empty in a PHP script?

The potential issue that could cause the $PHP_AUTH_USER variable to be empty in a PHP script is that the server configuration may not be set up to pas...

What are the differences between using sessions and cookies for storing user data in PHP?

Using sessions is generally more secure than using cookies for storing user data in PHP because session data is stored on the server side, while cooki...

How can a 3MB limit be implemented for image capacity in a PHP file upload form?

To implement a 3MB limit for image capacity in a PHP file upload form, you can check the size of the uploaded file before allowing it to be saved on t...

What are common reasons for encountering the "Undefined index" error in PHP file upload scripts?

The "Undefined index" error in PHP file upload scripts commonly occurs when trying to access an array key that does not exist in the $_FILES superglob...

What are the differences between using the POST and GET methods in PHP for passing data?

When passing data in PHP, the main differences between using the POST and GET methods are the way the data is sent and the visibility of the data. POS...