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run code in 300+ PHP versions simultaneously
<?php namespace { class Bar extends PDO { public function baz() { parent::baz(); } } } namespace Foo { class PDO { public function baz() { echo __METHOD__; } } class FooBar extends Bar { } } namespace { $bar = new Foo\Bar(); $bar->baz(); }
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
Fatal error: Uncaught Error: Class "Foo\Bar" not found in /in/r0EhT:24 Stack trace: #0 {main} thrown in /in/r0EhT on line 24
Process exited with code 255.
Output for 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
Fatal error: Uncaught Error: Class 'Foo\Bar' not found in /in/r0EhT:24 Stack trace: #0 {main} thrown in /in/r0EhT on line 24
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
Fatal error: Class 'Foo\Bar' not found in /in/r0EhT on line 24
Process exited with code 255.
Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.28
Fatal error: Class 'Foo\Bar' not found in /in/r0EhT on line 25
Process exited with code 255.

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