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run code in 500+ PHP versions simultaneously
<?php class A { public function callMe() { return static::class . '::hi'; } public static function hi() { print "Hi from " . static::class . "\n"; } } class B extends A { } $a = new A(); $callback = $a->callMe(); $callback(); $b = new B(); $callback = $b->callMe(); $callback();
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.5 - 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
Hi from A Hi from B
Output for 5.5.0 - 5.5.36, 5.6.0 - 5.6.28
Fatal error: Call to undefined function A::hi() in /in/fW1st on line 19
Process exited with code 255.
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144.71 ms | 1744 KiB | 4 Q