Lecture 2 - Part 4 Authentication for web development

Lecture 2 - Part 4 Model/View/Controller (MVC) and Authentication for web development 

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PHP Manual

Lecture 0: HTTP

Lecture 1: PHP

Lecture 2: PHP, Continued

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Lecture 3: MVC, XML

Lecture 4: SQL

Lecture 5: SQL, Continued

Lecture 6: JavaScript

Lecture 7: Ajax

Lecture 8: Security

Lecture 9: Scalability

Superglobal variables in PHP

Several predefined variables in PHP are "superglobals", which means they are available in all scopes throughout a script. There is no need to do global $variable; to access them within functions or methods.

These superglobal variables are:

• $GLOBALS
• $_SERVER
• $_GET
• $_POST
• $_FILES
• $_COOKIE
• $_SESSION
• $_REQUEST
• $_ENV