WordPress 3 Plugin Development Essentials

Review of PHP functions used

The following is a list of some of the PHP functions and constants used:

• __CLASS__: PHP constant that contains the name of the PHP class in which it appears.
• __FILE__: PHP constant that contains the name of the file in which appears.
• parent::__construct(): A convenient way to run the __construct in the parent class. This statement is only used in a child class.
• trim(): Removes whitespace from the beginning and end of a string.
• rand(x,y): Picks a random number between x and y.
• explode($separator, $str): Separates a string $str into an array by splitting it at each instance of $separator.
• stripslashes(): Removes backslashes from form-submitted data.