3v4l.org

run code in 300+ PHP versions simultaneously
<?php namespace Generics; class CollectionᐸTᐳ implements \Countable { private $items = []; public function add(T $item) { $this->items[] = $item; } public function count() { return count($this->items); } } $dates = new CollectionᐸDateTimeᐳ(); $dates->add(new DateTime('yesterday')); $dates->add(new DateTime('today')); $dates->add(new DateTime('tomorrow')); echo count($dates); class T extends \DateTime {} class DateTime extends T {}; class CollectionᐸDateTimeᐳ extends CollectionᐸTᐳ {}
Output for 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6
Deprecated: Return type of Generics\CollectionᐸTᐳ::count() should either be compatible with Countable::count(): int, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/0f4HL on line 14 Fatal error: Uncaught Error: Class "Generics\CollectionᐸDateTimeᐳ" not found in /in/0f4HL:20 Stack trace: #0 {main} thrown in /in/0f4HL on line 20
Process exited with code 255.
Output for 8.3.5
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 Deprecated: Return type of Generics\CollectionᐸTᐳ::count() should either be compatible with Countable::count(): int, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/0f4HL on line 14 Fatal error: Uncaught Error: Class "Generics\CollectionᐸDateTimeᐳ" not found in /in/0f4HL:20 Stack trace: #0 {main} thrown in /in/0f4HL on line 20
Process exited with code 255.
Output for 8.0.0 - 8.0.30
Fatal error: Uncaught Error: Class "Generics\CollectionᐸDateTimeᐳ" not found in /in/0f4HL:20 Stack trace: #0 {main} thrown in /in/0f4HL on line 20
Process exited with code 255.
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
Fatal error: Uncaught Error: Class 'Generics\CollectionᐸDateTimeᐳ' not found in /in/0f4HL:20 Stack trace: #0 {main} thrown in /in/0f4HL on line 20
Process exited with code 255.
preferences:
180.31 ms | 402 KiB | 218 Q