首先贴一段示例代码:
<?php
include "con_db.php";//连接数据库
$sql="select * from note order by note_date desc limit ".($index*10).",10"; //sql语句
$result=mysql_query($sql);//获得结果
$note;$i=0; //初始化变量
while($infor=mysql_fetch_array($result))
{
//把结果放到一个一维数组里
$note["id"]=$infor['note_id'];
$note["content"]=$infor['note_content'];
$note["date"]=$infor['note_date'];
$note["username"]=$infor['username'];
//放到二维数组里
$notes[$i++]=$note;
}
echo json_encode($notes );
?> 输出结果:
[{"id":"12","content":"\u662f","date":"2014-05-24 09:31:52","username":"\u532f"},
{"id":"31","content":"\u642f","date":"2014-05-24 09:31:49","username":"\u322f"},
{"id":"70","content":"\u692f","date":"2014-05-24 09:31:48","username":"\u132f"}]
你会发现应该输出的汉字变成了unicode字符集.
这时我们就要用到urlencode的方法,把汉字用urlencode方法编码,转化为json之后再用urldecode解码.看如下例子:
<?php
$h =urlencode("开心");
echo $h;
$x =urldecode($h);
echo $x;
?> 输出结果:
%BF%AA%D0%C4开心 这样通过中间过程的编码和解码,转化成json的过程便不会自动把汉字变成Unicode字符集了.所以最后的方法为:
<?php
while($infor=mysql_fetch_array($re))
{
$note["id"]=$infor['note_id'];//数字不需要编码
$note["content"]=urlencode($infor['note_content']);//汉字需要编码
$note["date"]=$infor['note_date'];
$note["username"]=urlencode($infor['username']);
$notes[$i++]=$note;
}
echo urldecode(json_encode($notes ));//转化成json之后再用urldecode解码为汉字
?> 结果如下:
[{"id":"22","content":"文章","date":"2014-05-24 09:31:52","username":"王"},
{"id":"21","content":"内容","date":"2014-05-24 09:31:49","username":"李"},
{"id":"20","content":"可以","date":"2014-05-24 09:31:48","username":"冯"}]
这样我们就成功地把二维数组转化成了json了.
如有问题,请在下方评论,我会及时回复的.
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