Private/Polyfony/Request.php
public static function server(string $variable, $default = null) {
		return isset(self::$_server[$variable])
			? self::$_server[$variable]
			: $default;
	}
public static function server(string $variable, $default = null) {
		return isset(self::$_server[$variable])
			? self::$_server[$variable]
			: $default;
	}
public static function server ( string $ variable , $ default = null ) { return isset ( self :: $ _server [ $ variable ] ) ? self :: $ _server [ $ variable ] : $ default ; }
Get a single SERVER variable.

@access public
@param  string $variable The variable we wish to return.
@param  mixed  $default  If the variable is not found, this is returned.
@return mixed
@static
Get a single SERVER variable .