This function returns an multidimensional array containing a list of all defined variables, be them environment, server or user-defined variables.
$b = array(1,1,2,3,5,8);
$arr = get_defined_vars();
// print $b
print_r($arr["b"]);
// print path to the PHP interpreter (if used as a CGI)
// e.g. /usr/local/bin/php
echo $arr["_"];
// print the command-line paramaters if any
print_r($arr["argv"]);
// print all the server vars
print_r($arr["HTTP_SERVER_VARS"]);
// print all the available keys for the arrays of variables
print_r(array_keys(get_defined_vars()));
|
See also get_defined_functions().