note 121398 deleted from language.variables.scope by crell

Note Submitter: Semyon Naitur ---- function f(){ global $a; // global $a is declared, local reference is created $a = 'a'; // global $a is set unset($a); // local reference is unset, global $a remains set $a = 'b'; // local $a is declared and set } f(); echo $a; // prints 'a' function f(){ global $a; // global $a is declared, local reference is created $a = 'a'; // global $a is set unset($a); // local reference $a is unset, global var $a remains set global $a; // local reference is created again $a .= 'b'; } f(); echo $a; // prints 'ab'