socket_read
Description
string socket_read ( resource socket, int length [, int type])| 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。 |
The function socket_read() reads from the socket resource socket created by the socket_create() or socket_accept() functions. 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).
socket_read() returns the data as a string on success, or FALSE on error. 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.
注: socket_read() may return a zero length string ("") indicating the end of communication (i.e. the remote end point has closed the connection).
Optional type parameter is a named constant:
PHP_BINARY_READ - use the system read() function. Safe for reading binary data. (Default in PHP >= 4.1.0)
PHP_NORMAL_READ - reading stops at \n or \r. (Default in PHP <= 4.0.6)
See also socket_accept(), socket_bind(), socket_connect(), socket_listen(), socket_last_error(), socket_strerror() and socket_write().