(PHP 3 <= 3.0.18, PHP 4 >= 4.0.0)
getenv -- Get the value of an environment variable
Description
string getenv (string varname)
Returns the value of the environment variable varname, or
FALSE on an error.
$ip = getenv ("REMOTE_ADDR"); // get the ip number of the user
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You can see a list of all the environmental variables by using phpinfo(). You can find out what many of them mean by taking a
look at the CGI specification,
specifically the page on
environmental variables.
Note: This function does not work in ISAPI mode.
See also putenv().
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