单词转换驼峰命名方法

/***
        * 转换驼峰命名
        * @uncamelized_words 需要转换的单词 @separator 单词中的分隔符
    ***/
    function camelize($uncamelized_words,$separator='_'){

        $uncamelized_words = $separator. str_replace($separator, " ", strtolower($uncamelized_words));
        return ltrim(str_replace(" ", "", ucwords($uncamelized_words)), $separator );

    }