1--TEST-- 2ZE2 $this cannot be exchanged 3--FILE-- 4<?php 5 6/* please don't shorten this test. It shows what would happen if 7 * the fatal error would have been a warning. 8 */ 9class Foo 10{ 11 function replace($other) 12 { 13 echo __METHOD__ . "\n"; 14 $this = $other; 15 print $this->prop; 16 print $other->prop; 17 } 18 19 function indirect($other) 20 { 21 echo __METHOD__ . "\n"; 22 $this = $other; 23 $result = $this = $other; 24 print $result->prop; 25 print $this->prop; 26 } 27 28 function retrieve(&$other) 29 { 30 echo __METHOD__ . "\n"; 31 $other = $this; 32 } 33} 34 35$object = new Foo; 36$object->prop = "Hello\n"; 37 38$other = new Foo; 39$other->prop = "World\n"; 40 41$object->replace($other); 42$object->indirect($other); 43 44print $object->prop; // still shows 'Hello' 45 46$object->retrieve($other); 47print $other->prop; // shows 'Hello' 48 49?> 50===DONE=== 51--EXPECTF-- 52Fatal error: Cannot re-assign $this in %sthis.php on line %d 53
