@Immutable
    public static String ltrim(String s, String charsetList) {
        int i = 0;
        while (i < s.length() && charsetList.indexOf(s.charAt(i)) > -1) {
            i++;
        }
        return i >= s.length() ? "" : s.substring(i);
    }
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