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run code in 300+ PHP versions simultaneously
<?php $a = 20; ?> <head> <script> $.ajax({ url: "world.php", success: function (data){ $("#id").css({"transform":rotate(<?= $a ?>deg)"}) } }) </script> </head> <div id="id"></div>
Output for 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 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.25, 8.4.1 - 8.4.12
<head> <script> $.ajax({ url: "world.php", success: function (data){ $("#id").css({"transform":rotate(20deg)"}) } }) </script> </head> <div id="id"></div>

preferences:
131.76 ms | 408 KiB | 5 Q