filter_has_var

(no version information, might be only in CVS)

filter_has_var -- Checks if variable of specified type exists

说明

bool filter_has_var ( int type, string variable_name )

参数

type

One of INPUT_GET, INPUT_POST, INPUT_COOKIE, INPUT_SERVER, INPUT_ENV.

variable_name

Name of a variable to check.

返回值

如果成功则返回 TRUE,失败则返回 FALSE