/**
* 中文转换为JSON字符串
* @param $chinese_str 中文:可以包含中文字母数字
* @return string
*/
function json_encode($chinese_str)
{
$chinese_str = iconv('UTF-8', 'UCS-2', $chinese_str);
$len = strlen($chinese_str) - 1;
$str = '';
for ($i = 0; $i < $len; $i = $i + 2)
{
$c1 = $chinese_str[$i];
$c2 = $chinese_str[$i + 1];
$unicode1=ord($c1);
$unicode2=ord($c2);
if ($unicode1)
{ // 两个字节的文字
$unicode1='\u'.base_convert($unicode1, 10, 16);
$unicode2=base_convert($unicode2, 10, 16);
if(in_array($unicode2,array('a','b','c','d','e','f'))){
$unicode2='0'.$unicode2;
}
$str.=$unicode1.$unicode2;
}else{
$str.=$c2;
}
}
return $str;
}
/**
* JSON字符串转换为中文
* @param $json_str JSON字符串
* @return string
*/
function json_decode($json_str)
{
// 转换编码,将JSON字符串转换成可以浏览的utf-8编码
$pattern = '/([\w]+)|(\\\u([\w]{4}))/i';
preg_match_all($pattern, $json_str, $matches);
$chinese_str = '';
if (!empty($matches))
{
$count=count($matches[0]);
for ($j = 0; $j < $count; $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);
$chinese_str .= $c;
}
else
{
$chinese_str .= $str;
}
}
}
return $chinese_str;
}