<?php class x { public $used = 1; public $uSed = 1; public $uSEd = 1; public $unused = 2; public $unUsed = 2; public $unUSed = 2; public $usedInside = 3; public $used_inside_various_cases = 3; public $used_INSIDE_various_cases = 3; public static $usedButStatic = 4; function y() { $this->usedInside = 3; $this->used_inside_various_cases = 5; $this->used_INSIDE_various_cases = 6; } } $x->used = 4; $x->uSed = 4; $x->uSEd = 4; $x->usedButStatic = 3; \x::$usedButStatic = 5;