What does PHP keyword 'var' do?
It's for declaring class member variables in PHP4, and is no longer needed. It will work in PHP5, but will raise an E_STRICT warning in PHP from version 5.0.0 up to version 5.1.2, as of when it was deprecated. Since PHP 5.3, var has been un-deprecated and is a synonym for 'public'.
Example usage:
class foo { var $x = 'y'; // or you can use public like... public $x = 'y'; //this is also a class member variables. function bar() { }}
The var keyword is used to declare variables in a class in PHP 4:
class Foo { var $bar;}With PHP 5 property and method visibility (public, protected and private) was introduced and thus var is deprecated.
I quote from http://www.php.net/manual/en/language.oop5.visibility.php
Note: The PHP 4 method of declaring a variable with the var keyword is still supported for compatibility reasons (as a synonym for the public keyword). In PHP 5 before 5.1.3, its usage would generate an
E_STRICTwarning.