socket_strerror

Description

string socket_strerror ( int errno)

警告

本扩展模块是实验性的。该模块的行为，包括其函数的名称以及其它任何关于此模块的文档可能会在没有通知的情况下随 PHP 以后的发布而改变。我们提醒您在使用本扩展模块的同时自担风险。

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"; } ?>
The expected output from the above example (assuming the script is not run with root privileges):
socket_bind() failed: reason: Permission denied