iconv函数提示错误，解决办法整理

  在网上看到json的文章，打算测试一下，结果，出现错误，先附上代码：

  "贾朝藤",'age'=>19,'sex'=>"男",'add'=>"中国石家庄"); echo json_encode($arr); echo "
"; $name = iconv("GBK","UTF-8","贾朝藤"); $sex = iconv("GBK","UTF-8","男"); $add = iconv("GBK","UTF-8","中国石家庄"); $arr = array ('name'=>"$name",'age'=>19,'sex'=>"$sex",'add'=>"$add"); echo $str=json_encode($arr); ?>

  错误信息如下：

  {"name":"/u8d3e/u671d/u85e4","age":19,"sex":"/u7537","add":"/u4e2d/u56fd/u77f3/u5bb6/u5e84"} Notice: iconv() [function.iconv]: Detected an illegal character in input string in D:/wamp/www/ajax/js_php.php on line 6 Notice: iconv() [function.iconv]: Detected an illegal character in input string in D:/wamp/www/ajax/js_php.php on line 7 Notice: iconv() [function.iconv]: Detected an illegal character in input string in D:/wamp/www/ajax/js_php.php on line 8 {"name":"/u7490/u70ac","age":19,"sex":"","add":"/u6d93"} 

  之后百度，谷歌了一番，得到两个方法：
  1.把gb2312换为gbk ，同样出错，错误信息如下

  "name":"/u8d3e/u671d/u85e4","age":19,"sex":"/u7537","add":"/u4e2d/u56fd/u77f3/u5bb6/u5e84"} Notice: iconv() [function.iconv]: Detected an incomplete multibyte character in input string in D:/wamp/www/ajax/js_php.php on line 6 Notice: iconv() [function.iconv]: Detected an incomplete multibyte character in input string in D:/wamp/www/ajax/js_php.php on line 7 Notice: iconv() [function.iconv]: Detected an illegal character in input string in D:/wamp/www/ajax/js_php.php on line 8 {"name":"/u7490/u70ac/u6e5e/u9498","age":19,"sex":"/u9422","add":"/u6d93"}

  2.在UTF-8后加//IGNORE ，加上后提示如下：

  {"name":"/u8d3e/u671d/u85e4","age":19,"sex":"/u7537","add":"/u4e2d/u56fd/u77f3/u5bb6/u5e84"} Notice: iconv() [function.iconv]: Detected an incomplete multibyte character in input string in D:/wamp/www/ajax/js_php.php on line 6 Notice: iconv() [function.iconv]: Detected an incomplete multibyte character in input string in D:/wamp/www/ajax/js_php.php on line 7 {"name":"/u7490/u70ac/u6e5e/u9498","age":19,"sex":"/u9422","add":"/u6d93/u9365/u754c/u7176/u7039/u8dfa/u7c1e"}

  不解，之后在论坛提问，得到问题所在：

  我的php文件本身是utf-8编码的，把它转为ansi这个问题就不存在

  修改之后，确实，显示正常了！

  论坛还有个朋友，给我推荐了个函数

  string mb_convert_encoding ( string $str , string $to_encoding [, mixed $from_encoding ] )

  需要编译时加一个参数--enable-mbstring

  对了，附上json转换php数组跟js数组的文章地址也加上，个人感觉文章不错

  http://www.phpchina.com/index.php?action-viewthread-tid-15585