socket_strerror

(PHP 4 >= 4.1.0, PHP 5)

socket_strerror — Return a string describing a socket error

说明

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.

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 errno parameter.

范例

Example #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

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）