(PHP4 >= 4.0.2)
strerror -- Return a string describing a socket error
Description
string strerror (int errno)
strerror() takes as its
errno parameter the return value of one of
the socket functions, 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 strerror(), and it tells you
what happened.
Example 1. strerror() example
<?php
if (($socket = socket (AF_INET, SOCK_STREAM, 0)) < 0) {
echo "socket() failed: reason: " . strerror ($socket) . "\n";
}
if (($ret = bind ($socket, '127.0.0.1', 80)) < 0) {
echo "bind() failed: reason: " . strerror ($ret) . "\n";
}
?>
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The expected output from the above example (assuming the script
is not run with root privileges):
bind() failed: reason: Permission denied
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See also
accept_connect(),
bind(),
connect(),
listen(),
socket(), and
socket_get_status().