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run code in 300+ PHP versions simultaneously
<?php function asdf(): array{ return; }
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 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
Fatal error: A function with return type must return a value in /in/nd7fB on line 3
Process exited with code 255.
Output for 7.0.0 - 7.0.33
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.40
Parse error: syntax error, unexpected ':', expecting '{' in /in/nd7fB on line 2
Process exited with code 255.

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