浅析PHP中的UNICODE 编码与解码
author:一佰互联 2019-04-29   click:169
方法一:
复制代码 代码如下:
<?php
function unicode_encode($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);
        }
        else
        {
            $str .= $c2;
        }
    }
    return $str;
}
//将UNICODE编码后的内容进行解码
function unicode_decode($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;
}

方法二:
复制代码 代码如下:
  function unicode2utf8($str){
    if(!$str) return $str;
    $decode = json_decode($str);
    if($decode) return $decode;
    $str = "["" . $str . ""]";
    $decode = json_decode($str);
    if(count($decode) == 1){
      return $decode[0];
    }
      return $str;
    }