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@ 2014-08-15T11:40:35Z

<?php
echo function_exists("socket_import_stream"), "\n";
echo defined("SOL_SOCKET"), "\n";
echo defined("SO_KEEPALIVE"), "\n";

Output
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References
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function_exists: documentation ( source)

preferences:dark modelive preview

54.61 ms | 402 KiB | 5 Q