PHP错误：iconv() Detected an illegal character

1. <?php  
2. @header("Content-type:text/html;charset=GB2312");  
3. $arr = array ('name'=>"贾朝藤",'age'=>19,'sex'=>"男",'add'=>"中国石家庄");  
4. echo json_encode($arr);  
5. echo "<br/>";  
6. $name = iconv("GBK","UTF-8","贾朝藤");  
7. $sex = iconv("GBK","UTF-8","男");  
8. $add = iconv("GBK","UTF-8","中国石家庄");  
9. $arr = array ('name'=>"$name",'age'=>19,'sex'=>"$sex",'add'=>"$add");  
10. echo $str=json_encode($arr);  
11. ?>  

  错误信息如下：

1. {"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

1. "name":"/u8d3e/u671d/u85e4","age":19,"sex":"/u7537","add":"/u4e2d/u56fd/u77f3/u5bb6/u5e84"}  
2. Notice: iconv() [function.iconv]: Detected an incomplete multibyte character in input string in D:/wamp/www/ajax/js_php.php on line 6  
3. Notice: iconv() [function.iconv]: Detected an incomplete multibyte character in input string in D:/wamp/www/ajax/js_php.php on line 7  
4. Notice: iconv() [function.iconv]: Detected an illegal character in input string in D:/wamp/www/ajax/js_php.php on line 8  
5. {"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：

1. {"name":"/u8d3e/u671d/u85e4","age":19,"sex":"/u7537","add":"/u4e2d/u56fd/u77f3/u5bb6/u5e84"}  
2. Notice: iconv() [function.iconv]: Detected an incomplete multibyte character in input string in D:/wamp/www/ajax/js_php.php on line 6  
3. Notice: iconv() [function.iconv]: Detected an incomplete multibyte character in input string in D:/wamp/www/ajax/js_php.php on line 7  
4. {"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！

或者

return iconv('utf-8//ignore','gbk//ignore',$utfstr); 

替换为

mb_convert_encoding($utfstr, "UTF-8", "GBK");

标签：iconv,name,illegal,character,sex,add,php
来源： https://blog.csdn.net/cmddate/article/details/115017171