1--TEST-- 2Bug #71731: Null coalescing operator and ArrayAccess 3--FILE-- 4<?php 5 6class AA implements ArrayAccess { 7 private $data = []; 8 public function offsetExists($name): bool { 9 echo "offsetExists($name)\n"; 10 return array_key_exists($name, $this->data); 11 } 12 public function &offsetGet($name): mixed { 13 echo "offsetGet($name)\n"; 14 if (!array_key_exists($name, $this->data)) { 15 throw new Exception('Unknown offset'); 16 } 17 return $this->data[$name]; 18 } 19 public function offsetSet($name, $value): void { 20 echo "offsetSet($name)\n"; 21 $this->data[$name] = $value; 22 } 23 public function offsetUnset($name): void { 24 echo "offsetUnset($name)\n"; 25 unset($this->data[$name]); 26 } 27} 28 29$aa = new AA; 30var_dump(isset($aa[0][1][2])); 31var_dump(isset($aa[0]->foo)); 32var_dump($aa[0] ?? 42); 33var_dump($aa[0][1][2] ?? 42); 34 35$aa[0] = new AA; 36$aa[0][1] = new AA; 37var_dump(isset($aa[0][1][2])); 38var_dump($aa[0][1][2] ?? 42); 39 40?> 41--EXPECT-- 42offsetExists(0) 43bool(false) 44offsetExists(0) 45bool(false) 46offsetExists(0) 47int(42) 48offsetExists(0) 49int(42) 50offsetSet(0) 51offsetGet(0) 52offsetSet(1) 53offsetExists(0) 54offsetGet(0) 55offsetExists(1) 56offsetGet(1) 57offsetExists(2) 58bool(false) 59offsetExists(0) 60offsetGet(0) 61offsetExists(1) 62offsetGet(1) 63offsetExists(2) 64int(42) 65
