1--TEST-- 2Closure 046: Rebinding: preservation of previous scope when "static" given as scope arg (same as closure #041) 3--FILE-- 4<?php 5 6/* It's impossible to preserve the previous scope when doing so would break 7 * the invariants that, for non-static closures, having a scope is equivalent 8 * to having a bound instance. */ 9 10$nonstaticUnscoped = function () { var_dump(isset(A::$priv)); var_dump(isset($this)); }; 11 12class A { 13 private static $priv = 7; 14 function getClosure() { 15 return function() { var_dump(isset(A::$priv)); var_dump(isset($this)); }; 16 } 17} 18class B extends A {} 19 20$a = new A(); 21$nonstaticScoped = $a->getClosure(); 22 23echo "Before binding", "\n"; 24$nonstaticUnscoped(); echo "\n"; 25$nonstaticScoped(); echo "\n"; 26 27echo "After binding, no instance", "\n"; 28$d = $nonstaticUnscoped->bindTo(null, "static"); $d(); echo "\n"; 29$d = $nonstaticScoped->bindTo(null, "static"); var_dump($d); echo "\n"; 30 31echo "After binding, with same-class instance for the bound one", "\n"; 32$d = $nonstaticUnscoped->bindTo(new A, "static"); $d(); echo "\n"; 33$d = $nonstaticScoped->bindTo(new A, "static"); $d(); echo "\n"; 34 35echo "After binding, with different instance for the bound one", "\n"; 36$d = $nonstaticScoped->bindTo(new B, "static"); $d(); echo "\n"; 37 38echo "Done.\n"; 39?> 40--EXPECTF-- 41Before binding 42bool(false) 43bool(false) 44 45bool(true) 46bool(true) 47 48After binding, no instance 49bool(false) 50bool(false) 51 52 53Warning: Cannot unbind $this of closure using $this in %s on line %d 54NULL 55 56After binding, with same-class instance for the bound one 57bool(false) 58bool(true) 59 60bool(true) 61bool(true) 62 63After binding, with different instance for the bound one 64bool(true) 65bool(true) 66 67Done. 68
