知识点：
1、JSON数据格式介绍
2、对数据编码成JSON格式
3、对JSON数据进行解码，并操作
JSON数据格式表示方式如下：
复制代码 代码如下:
{ "programmers": [
{ "firstName": "Brett", "lastName":"McLaughlin", "email": "aaaa" },
{ "firstName": "Jason", "lastName":"Hunter", "email": "bbbb" },
{ "firstName": "Elliotte", "lastName":"Harold", "email": "cccc" }
],
"authors": [
{ "firstName": "Isaac", "lastName": "Asimov", "genre": "science fiction" },
{ "firstName": "Tad", "lastName": "Williams", "genre": "fantasy" },
{ "firstName": "Frank", "lastName": "Peretti", "genre": "christian fiction" }
],
"musicians": [
{ "firstName": "Eric", "lastName": "Clapton", "instrument": "guitar" },
{ "firstName": "Sergei", "lastName": "Rachmaninoff", "instrument": "piano" }
] }
用
复制代码 代码如下:
'firstname' => iconv('gb2312', 'utf-8', '非诚'),
'lastname' => iconv('gb2312', 'utf-8', '勿扰'),
'contact' => array(
'email' =>'[email protected]',
'website' =>'http://www.jb51.net',
)
);
//将数组编码成JSON数据格式
$json_string = json_encode($arr);
//JSON格式数据可直接输出
echo $json_string;
?>
需要指出的是，在非UTF-8编码下，中文字符将不可被encode，结果会出来空值，所以，如果你使用 gb2312编写输出：（JSON格式）
{"firstname":"\u975e\u8bda","lastname":"\u52ff\u6270","contact":{"email":"[email protected]","website":"http:\/\/www.jb51.net"}}
用
复制代码 代码如下:
'firstname' => iconv('gb2312', 'utf-8', '非诚'),
'lastname' => iconv('gb2312', 'utf-8', '勿扰'),
'contact' => array(
'email' =>'[email protected]',
'website' =>'http://www.jb51.net',
)
);
//将数组编码成JSON数据格式
$json_string = json_encode($arr);
//将JSON格式数据进行解码，解码后不是JSON数据格式，不可用echo直接输出
$obj = json_decode($json_string);
//强制转化为数组格式
$arr = (array) $obj;
//按数组方式调用里面的数据
echo iconv('utf-8','gb2312',$arr['firstname']);
echo '';
//输出数组结构
print_r($arr);
?>
输出：
非诚
Array ( [firstname] => 闈炶瘹 [lastname] => 鍕挎壈 [contact] => stdClass Object ( [email] => [email protected] [website] => http://www.jb51.net ) )