socket_strerror
(PHP 4 >= 4.1.0, PHP 5)
socket_strerror -- Return a string describing a socket error
Description
string
socket_strerror ( int errno )
socket_strerror() takes as its
errno parameter a socket error code as returned by
socket_last_error() and returns the corresponding
explanatory text. This makes it a bit more pleasant to figure out why
something didn't work; for instance, instead of having to track down a
system include file to find out what '-111' means, you just pass it to
socket_strerror(), and it tells you what happened.
例子 1. socket_strerror() example
<?php
if (false == ($socket = @socket_create(AF_INET, SOCK_STREAM, SOL_TCP))) {
echo "socket_create() failed: reason: " . socket_strerror(socket_last_error()) . "\n";
}
if (false == (@socket_bind($socket, '127.0.0.1', 80))) {
echo "socket_bind() failed: reason: " . socket_strerror(socket_last_error($socket)) . "\n";
}
?>
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The expected output from the above example (assuming the script
is not run with root privileges):
socket_bind() failed: reason: Permission denied |
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See also
socket_accept(),
socket_bind(),
socket_connect(),
socket_listen(), and
socket_create().