3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Article implements ArrayAccess { public $title; function __construct($title) { $this->title = $title; } function offsetSet($key, $value){ $this->{$key} = &$value; } function &offsetGet($key){ return $this->{$key}; } function offsetUnset($key){ unset($this->{$key}); } function offsetExists($offset) { return array_key_exists($offset,get_object_vars($this)); } } // Create the object $A = new Article('SPL Rocks'); // Change the title using array syntax using reference $str = 'SPL _really_ rocks'; $A['title'] =&$str; // Check what it looks like again print_r($A);
Output for 8.1.0 - 8.1.9
Deprecated: Return type of Article::offsetExists($offset) should either be compatible with ArrayAccess::offsetExists(mixed $offset): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/muTTS on line 17 Deprecated: Return type of & Article::offsetGet($key) should either be compatible with ArrayAccess::offsetGet(mixed $offset): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/muTTS on line 11 Deprecated: Return type of Article::offsetSet($key, $value) should either be compatible with ArrayAccess::offsetSet(mixed $offset, mixed $value): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/muTTS on line 8 Deprecated: Return type of Article::offsetUnset($key) should either be compatible with ArrayAccess::offsetUnset(mixed $offset): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/muTTS on line 14 Fatal error: Uncaught Error: Cannot assign by reference to an array dimension of an object in /in/muTTS:27 Stack trace: #0 {main} thrown in /in/muTTS on line 27
Process exited with code 255.
Output for 7.4.0 - 7.4.30, 8.0.0 - 8.0.22
Fatal error: Uncaught Error: Cannot assign by reference to an array dimension of an object in /in/muTTS:27 Stack trace: #0 {main} thrown in /in/muTTS on line 27
Process exited with code 255.
Output for 7.3.0 - 7.3.33
Fatal error: Uncaught Error: Cannot assign by reference to overloaded object in /in/muTTS:27 Stack trace: #0 {main} thrown in /in/muTTS on line 27
Process exited with code 255.
Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33
Article Object ( [title] => SPL Rocks )
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.40
Fatal error: Cannot assign by reference to overloaded object in /in/muTTS on line 27
Process exited with code 255.

preferences:
41.44 ms | 415 KiB | 5 Q