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socket_strerror

(PHP 4 >= 4.1.0)

socket_strerror -- Return a string describing a socket error

Description

string socket_strerror (int errno)

Warning

This function is EXPERIMENTAL. The behaviour of this function, the name of this function, and anything else documented about this function may change in a future release of PHP without notice. Be warned and use this function at your own risk.

socket_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 socket_strerror(), and it tells you what happened.

Example 1. socket_strerror() example

<?php
if (($socket = socket_create (AF_INET, SOCK_STREAM, 0)) < 0) {
   echo "socket_create() failed: reason: " . socket_strerror ($socket) . "\n";
} 

if (($ret = socket_bind ($socket, '127.0.0.1', 80)) < 0) {
   echo "socket_bind() failed: reason: " . socket_strerror ($ret) . "\n";
}
?>

The expected output from the above example (assuming the script is not run with root privileges): 
bind() failed: reason: Permission denied

See also socket_accept(), socket_bind(), socket_connect(), socket_listen(), socket_create(), and socket_get_status().

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