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run code in 300+ PHP versions simultaneously
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Output for 8.4.1 - 8.4.6
string(0) "" string(0) ""
Output for 8.1.0 - 8.1.32, 8.2.0 - 8.2.28, 8.3.0 - 8.3.20
string(3) "Foo" string(3) "Foo"

preferences:
58.38 ms | 412 KiB | 5 Q