Php constants
shape
$_FILES superglobal array, which allows you to access file data sent via an HTML form. The process involves setting up an HTML form for file uploads, configuring your PHP script to handle the uploaded file, and ensuring proper validation and security. foreach loop in PHP is a control structure used to iterate over arrays or objects. It is specifically designed for iterating through the elements of an array without needing to use an index or counter. The foreach loop is generally preferred when you want to loop through all elements of an array or object in a simple and clean way. __get() and __set() are magic methods that allow you to intercept access to properties of an object. These methods are part of PHP's object-oriented programming and are used to handle cases where you want to manage how properties are read and written dynamically, especially when those properties are not directly accessible or do not exist.