1--TEST-- 2Bug #32322 (Return values by reference broken( using self::),example singleton instance) 3--INI-- 4error_reporting=4095 5--FILE-- 6<?php 7class test 8{ 9 private static $instance = null; 10 private $myname = ''; 11 12 private function __construct( $value = '' ) 13 { 14 echo "New class $value created \n"; 15 $this -> myname = $value; 16 } 17 private function __clone() {} 18 static public function getInstance() 19 { 20 if ( self::$instance == null ) 21 { 22 self::$instance = new test('Singleton1'); 23 } 24 else { 25 echo "Using old class " . self::$instance -> myname . "\n"; 26 } 27 return self::$instance; 28 } 29 static public function getInstance2() 30 { 31 static $instance2 = null; 32 if ( $instance2 == null ) 33 { 34 $instance2 = new test('Singleton2'); 35 } 36 else { 37 echo "Using old class " . $instance2 -> myname . "\n"; 38 } 39 return $instance2; 40 } 41 public function __destruct() 42 { 43 if ( defined('SCRIPT_END') ) 44 { 45 echo "Class " . $this -> myname . " destroyed at script end\n"; 46 } else { 47 echo "Class " . $this -> myname . " destroyed beforce script end\n"; 48 } 49 } 50} 51echo "Try static instance inside class :\n"; 52$getCopyofSingleton = test::getInstance(); 53$getCopyofSingleton = null; 54$getCopyofSingleton = &test::getInstance(); 55$getCopyofSingleton = null; 56$getCopyofSingleton = test::getInstance(); 57echo "Try static instance inside function :\n"; 58$getCopyofSingleton2 = test::getInstance2(); 59$getCopyofSingleton2 = null; 60$getCopyofSingleton2 = &test::getInstance2(); 61$getCopyofSingleton2 = null; 62$getCopyofSingleton2 = test::getInstance2(); 63 64define('SCRIPT_END',1); 65?> 66--EXPECTF-- 67Try static instance inside class : 68New class Singleton1 created 69Using old class Singleton1 70 71Notice: Only variables should be assigned by reference in %sbug32322.php on line 49 72Using old class Singleton1 73Try static instance inside function : 74New class Singleton2 created 75Using old class Singleton2 76 77Notice: Only variables should be assigned by reference in %sbug32322.php on line 55 78Using old class Singleton2 79Class Singleton1 destroyed at script end 80Class Singleton2 destroyed at script end 81
