socket_strerror()

(PHP 4 >= 4.1.0, PHP 5, PHP 7)

Return a string describing a socket error

说明

socket_strerror(int $errno): string

socket_strerror() takes as its$errnoparameter a socket error code as returned by socket_last_error() and returns the corresponding explanatory text.

Note:
Although the error messages generated by the socket extension are in English, the system messages retrieved with this function will appear depending on the current locale(LC_MESSAGES).

参数

$errno: A valid socket error number, likely produced by socket_last_error().

返回值

Returns the error message associated with the$errnoparameter.

范例

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

参见

socket_accept()Accepts a connection on a socket
socket_bind()给套接字绑定名字
socket_connect()开启一个套接字连接
socket_listen()Listens for a connection on a socket
socket_create()创建一个套接字（通讯节点）