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run code in 300+ PHP versions simultaneously
<?php $serialized_array = serialize(array(1234=>"foobar")); echo "Serialized Array: $serialized_array" . PHP_EOL; $array = unserialize($serialzed_array); print_r($array); echo array_key_check(1234, $array) . PHP_EOL;

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38.75 ms | 402 KiB | 5 Q