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--TEST--
getprotobynumber function errors test
--CREDITS--
edgarsandi - <edgar.r.sandi@gmail.com>
--FILE--
<?php
// empty protocol number
var_dump(getprotobynumber());
// invalid protocol number
var_dump(getprotobynumber(999));
?>
--EXPECTF--
Warning: getprotobynumber() expects exactly 1 parameter, 0 given in %s on line %d
NULL
bool(false)
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