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run code in 300+ PHP versions simultaneously
<?php namespace Foo; abstract class Base { function dump() { var_dump(static::class, basename(strtr(static::class, '\\', '/'))); } } class Concrete extends Base {} (new Concrete)->dump();
Output for 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.3, 7.2.7, 7.2.9 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
string(12) "Foo\Concrete" string(8) "Concrete"
Output for 7.2.4 - 7.2.6, 7.2.8

Process exited with code 137.
preferences:
92.02 ms | 1949 KiB | 4 Q