PHP5中文手册·Reads a maximum of length bytes from a socket -- 追寻梦想＞编程乐园＞PHP 编程

说明

string socket_read ( resource $socket , int $length [, int $type ] )

The function socket_read() reads from the socket resource socket created by the socket_create() or socket_accept() functions.

参数

socket

A valid socket resource created with socket_create() or socket_accept().

length

The maximum number of bytes read is specified by the length parameter. Otherwise you can use \r, \n, or \0 to end reading (depending on the type parameter, see below).

type

Optional type parameter is a named constant:

PHP_BINARY_READ (Default) - use the system recv() function. Safe for reading binary data.
PHP_NORMAL_READ - reading stops at \n or \r.

返回值

socket_read() returns the data as a string on success, or FALSE on error (including if the remote host has closed the connection). The error code can be retrieved with socket_last_error(). This code may be passed to socket_strerror() to get a textual representation of the error.

Note: socket_read() returns a zero length string ("") when there is no more data to read.

更新日志

版本	说明
4.1.0	The default value for `type` was changed from `PHP_NORMAL_READ` to `PHP_BINARY_READ`

socket_read

说明

参数

返回值

更新日志

参见