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run code in 500+ PHP versions simultaneously
<?php interface AllowsOpen{ public function open(); } trait Container{ public function open(){ echo 'Something is inside!'; } } class Book implements AllowsOpen{ use Container; public function open(){ echo 'You see only blank pages'; } } $objBook = new Book(); $objBook->open();
Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 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 - 8.4.21, 8.5.0 - 8.5.7
You see only blank pages

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84.69 ms | 1681 KiB | 4 Q