@Immutable
    public static String str_pad(String string, int length) {
        return str_pad(string, length, " ", StringConstants.STR_PAD_RIGHT);
    }
Parses the cslashes bitmap returning an actual bitmap.

@param charset the bitmap string

@return the actual bitmap
exts/jphp-zend-ext/src/main/java/org/develnext/jphp/zend/ext/standard/StringFunctions.java