html实体转化字符串 php_php将字符串转为HTML的实体引用的一个类

class HtmlEncode {

static $_convertToHtmlEntitiesSrcEncoding='UTF-8';

/**

* 将非ASCII字符串转换成HTML实体

*

* @example HtmlEncode::encode("我信了"); //输出:我信了

* @param string $s 要进行编码的字符串

* @return string 返回HTML实体引用

*/

public static function encode($s,$srcEncoding='UTF-8') {

self::$_convertToHtmlEntitiesSrcEncoding=$srcEncoding;

return preg_replace_callback('|[^\x00-\x7F]+|',array(__CLASS__,'_convertToHtmlEntities'),$s);

}

public static function _convertToHtmlEntities($data) {

if (is_array($data)) {

$chars=str_split(iconv(self::$_convertToHtmlEntitiesSrcEncoding,"UCS-2BE",$data[0]),2);

$chars=array_map(array(__CLASS__,__FUNCTION__),$chars);

return join("",$chars);

} else {

$code=hexdec(sprintf("%02s%02s;",dechex(ord($data {0})),dechex(ord($data {1}))));

return sprintf("%s;",$code);

}

}

}