PHP UTF-8和Unicode编号互转（多语言）

ゞ浴缸里的玫瑰 2022-06-16 10:41 208阅读 0赞

PHP UTF-8和Unicode编号互转

/**
         * utf-8 转unicode
         *
         * @param string $name
         * @return string
         */
        function utf8_unicode($name){
            $name = iconv('UTF-8', 'UCS-2', $name);
            $len  = strlen($name);
            $str  = '';
            for ($i = 0; $i < $len - 1; $i = $i + 2){
                $c  = $name[$i];
                $c2 = $name[$i + 1];
                if (ord($c) > 0){   //两个字节的文字
                    $str .= '\u'.base_convert(ord($c), 10, 16).str_pad(base_convert(ord($c2), 10, 16), 2, 0, STR_PAD_LEFT);
                    //$str .= base_convert(ord($c), 10, 16).str_pad(base_convert(ord($c2), 10, 16), 2, 0, STR_PAD_LEFT);
                } else {
                    $str .= '\u'.str_pad(base_convert(ord($c2), 10, 16), 4, 0, STR_PAD_LEFT);
                    //$str .= str_pad(base_convert(ord($c2), 10, 16), 4, 0, STR_PAD_LEFT);
                }
            }
            $str = strtoupper($str);//转换为大写
            return $str;
        }
    
        /**
         * unicode 转 utf-8
         *
         * @param string $name
         * @return string
         */
        function unicode_decode($name)
        {
            $name = strtolower($name);
            // 转换编码，将Unicode编码转换成可以浏览的utf-8编码
            $pattern = '/([\w]+)|(\\\u([\w]{4}))/i';
            preg_match_all($pattern, $name, $matches);
            if (!empty($matches))
            {
                $name = '';
                for ($j = 0; $j < count($matches[0]); $j++)
                {
                    $str = $matches[0][$j];
                    if (strpos($str, '\\u') === 0)
                    {
                        $code = base_convert(substr($str, 2, 2), 16, 10);
                        $code2 = base_convert(substr($str, 4), 16, 10);
                        $c = chr($code).chr($code2);
                        $c = iconv('UCS-2', 'UTF-8', $c);
                        $name .= $c;
                    }
                    else
                    {
                        $name .= $str;
                    }
                }
            }
            return $name;
        }