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run code in 300+ PHP versions simultaneously
<?php namespace FOO; class FOO { public const FOO = null; public $X = null; public function BAR(): void {} } echo class_exists('foo\foo') ? 'x':'o'; echo method_exists(FOO::class, 'bar') ? 'x':'o'; echo property_exists(FOO::class, 'x') ? 'x':'o'; echo defined(FOO::class.'::foo')? 'x':'o';
Output for 7.2.0 - 7.2.34, 7.3.0 - 7.3.26, 7.4.0 - 7.4.13, 8.0.0 - 8.0.3
xxoo