src/RequestData.php
public static function getValue(string $key)
    {
        $key = \mb_strtolower($key);
        if(isset(self::$_data[$key])) {
            return self::$_data[$key];
        }
        return null;
    }
public static function getValue(string $key)
    {
        $key = \mb_strtolower($key);
        if(isset(self::$_data[$key])) {
            return self::$_data[$key];
        }
        return null;
    }
public static function getValue ( string $ key ) { $ key = \ mb_strtolower ( $ key ) ; if ( isset ( self :: $ _data [ $ key ] ) ) { return self :: $ _data [ $ key ] ; } return null ; }
Returns the value with the given key from input data.

@param string $key
The input key
@return mixed
The input value
Returns the value with the given key from input data .