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1.1 misho 1: --TEST-- 2: passing parameter of __isset() by ref 3: --FILE-- 4: <?php 5: 6: class test { 7: function __isset(&$name) { } 8: } 9: 10: $t = new test; 11: $name = "prop"; 12: 13: var_dump(isset($t->$name)); 14: 15: echo "Done\n"; 16: ?> 17: --EXPECTF-- 18: Fatal error: Method test::__isset() cannot take arguments by reference in %s on line %d