php 实现HTML实体编号与非ASCII字符串相互转换类

字符 实体名称 实体编号  描述
&   &   &   and符号，与
"   "  "   引号
©   ©  ©  版权标志
®   ®   »  注册标志
™   ™ ™  商标标志
“   “ “  左双引号
”   ” ”  右双引号
‘   ‘ ‘  做单引号
’   ’ ’  右单引号

<?php/**
 *  HTML实体编号与非ASCII字符串相互转换类
 *  Date:   2016-09-07
 *  Author: fdipzone
 *  Ver:    1.0
 *
 *  Func:
 *  public  encode 字符串转为HTML实体编号
 *  public  decode HTML实体编号转为字符串
 *  private _convertToHtmlEntities 转换为HTML实体编号处理
 */class HtmlEntitie{ // class start
    public static $_encoding = 'UTF-8';    /**
     * 字符串转为HTML实体编号
     * @param  String $str      字符串
     * @param  String $encoding 编码
     * @return String
     */
    public static function encode($str, $encoding='UTF-8'){
        self::$_encoding = $encoding;        return preg_replace_callback('|[^\x00-\x7F]+|', array(__CLASS__, '_convertToHtmlEntities'), $str);
    }    /**
     * HTML实体编号转为字符串
     * @param  String $str      HTML实体编号字符串
     * @param  String $encoding 编码
     * @return String
     */
    public static function decode($str, $encoding='UTF-8'){
        return html_entity_decode($str, null, $encoding);
    }    /**
     * 转换为HTML实体编号处理
     * @param Mixed  $data 待处理的数据
     * @param String
     */
    private static function _convertToHtmlEntities($data){
        if(is_array($data)){            $chars = str_split(iconv(self::$_encoding, 'UCS-2BE', $data[0]), 2);            $chars = array_map(array(__CLASS__, __FUNCTION__), $chars);            return implode("", $chars);
        }else{            $code = hexdec(sprintf("%02s%02s;", dechex(ord($data {0})), dechex(ord($data {1})) ));            return sprintf("&#%s;", $code);
        }
    }
} // class end?>

<?phprequire 'HtmlEntitie.class.php';$str = '<p>更多资讯可关注本人微信号：fdipzone-idea</p><p>@@##@@</p><p><span>立即学习</span>“<a href="https://pan.quark.cn/s/7fc7563c4182" style="text-decoration: underline !important; color: blue; font-weight: bolder;" rel="nofollow" target="_blank">PHP免费学习笔记（深入）</a>”；</p><p>您的支持是我最大的动力，谢谢！</p>';// 字符串转为HTML实体编号$cstr = HtmlEntitie::encode($str);echo '字符串转为HTML实体编号'.PHP_EOL;echo $cstr.PHP_EOL.PHP_EOL;// HTML实体编号转为字符串echo 'HTML实体编号转为字符串'.PHP_EOL;echo HtmlEntitie::decode($cstr);?>

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