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run code in 300+ PHP versions simultaneously
<?php trait A { public function foo() { echo "foo"; } } trait B { use A { foo as foobar; } public function foo() { foobar(); echo "bar"; } } class AB { use A; public function run() { $this->foo(); } } class ABC { use B; } $me = new ABC(); $me->run();
Output for 7.0.0 - 7.0.31, 7.1.0 - 7.1.23, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Fatal error: Uncaught Error: Call to undefined method ABC::run() in /in/qtB81:24 Stack trace: #0 {main} thrown in /in/qtB81 on line 24
Process exited with code 255.
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.38
Fatal error: Call to undefined method ABC::run() in /in/qtB81 on line 24
Process exited with code 255.

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