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run code in 300+ PHP versions simultaneously
<?php (function($param1){ return function(...$param2) use ($param1){ foreach($param2 as $item) { echo "$param1 $item!\n"; } }; })("Merry Christmas")("To You", "To Me", "To Anyone");
Output for 7.0.0 - 7.0.33, 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 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Merry Christmas To You! Merry Christmas To Me! Merry Christmas To Anyone!
Output for 5.6.0 - 5.6.40
Parse error: syntax error, unexpected '(' in /in/JbM5U on line 14
Process exited with code 255.
Output for 5.5.0 - 5.5.38
Parse error: syntax error, unexpected '.', expecting '&' or variable (T_VARIABLE) in /in/JbM5U on line 5
Process exited with code 255.

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