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run code in 300+ PHP versions simultaneously
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Output for 8.2.0 - 8.2.28, 8.3.0 - 8.3.20, 8.4.1 - 8.4.6
bool(true) string(198) "<?php declare(strict_types = 1); $handle = fopen(__FILE__, 'r'); var_dump(flock($handle, LOCK_EX|LOCK_SH)); // only LOCK_SH is honored - php should throw here var_dump(file_get_contents(__FILE__));"

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