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"); $d(); echo "\n"; 30//$d should have been turned to static 31$d->bindTo($d); 32 33echo "After binding, with same-class instance for the bound one", "\n"; 34$d = $nonstaticUnscoped->bindTo(new A, "static"); $d(); echo "\n"; 35$d = $nonstaticScoped->bindTo(new A, "static"); $d(); echo "\n"; 36 37echo "After binding, with different instance for the bound one", "\n"; 38$d = $nonstaticScoped->bindTo(new B, "static"); $d(); echo "\n"; 39 40echo "Done.\n"; 41 42--EXPECTF-- 43Before binding 44bool(false) 45bool(false) 46 47bool(true) 48bool(true) 49 50After binding, no instance 51bool(false) 52bool(false) 53 54bool(true) 55bool(false) 56 57 58Warning: Cannot bind an instance to a static closure in %s on line %d 59After binding, with same-class instance for the bound one 60bool(false) 61bool(true) 62 63bool(true) 64bool(true) 65 66After binding, with different instance for the bound one 67bool(true) 68bool(true) 69 70Done. 71
