php操作JSON格式數(shù)據(jù)的實(shí)現(xiàn)代碼
Jun 13, 2016 pm 12:04 PM
知識(shí)點(diǎn)：
1、JSON數(shù)據(jù)格式介紹
2、對(duì)數(shù)據(jù)編碼成JSON格式
3、對(duì)JSON數(shù)據(jù)進(jìn)行解碼，并操作
JSON數(shù)據(jù)格式表示方式如下：
復(fù)制代碼 代碼如下:
{ "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php將數(shù)據(jù)編碼成JSON格式：
復(fù)制代碼 代碼如下:
//php中用數(shù)組表示JSON格式數(shù)據(jù)
$arr = array(
'firstname' => iconv('gb2312', 'utf-8', '非誠(chéng)'),
'lastname' => iconv('gb2312', 'utf-8', '勿擾'),
'contact' => array(
'email' =>'fcwr@jb51.net',
'website' =>'http://www.jb51.net',
)
);
//將數(shù)組編碼成JSON數(shù)據(jù)格式
$json_string = json_encode($arr);
//JSON格式數(shù)據(jù)可直接輸出
echo $json_string;
?>
需要指出的是，在非UTF-8編碼下，中文字符將不可被encode，結(jié)果會(huì)出來(lái)空值，所以，如果你使用 gb2312編寫(xiě)PHP代碼，那么就需要將包含中文的內(nèi)容使用iconv或者mb轉(zhuǎn)為UTF-8再進(jìn)行json_encode。
輸出：（JSON格式）
{"firstname":"\u975e\u8bda","lastname":"\u52ff\u6270","contact":{"email":"fcwr@jb51.net","website":"http:\/\/www.jb51.net"}}
用php對(duì)JSON數(shù)據(jù)進(jìn)行解碼并處理：
復(fù)制代碼 代碼如下:
//php中用數(shù)組表示JSON格式數(shù)據(jù)
$arr = array(
'firstname' => iconv('gb2312', 'utf-8', '非誠(chéng)'),
'lastname' => iconv('gb2312', 'utf-8', '勿擾'),
'contact' => array(
'email' =>'fcwr@jb51.net',
'website' =>'http://www.jb51.net',
)
);
//將數(shù)組編碼成JSON數(shù)據(jù)格式
$json_string = json_encode($arr);
//將JSON格式數(shù)據(jù)進(jìn)行解碼，解碼后不是JSON數(shù)據(jù)格式，不可用echo直接輸出
$obj = json_decode($json_string);
//強(qiáng)制轉(zhuǎn)化為數(shù)組格式
$arr = (array) $obj;
//按數(shù)組方式調(diào)用里面的數(shù)據(jù)
echo iconv('utf-8','gb2312',$arr['firstname']);
echo '';
//輸出數(shù)組結(jié)構(gòu)
print_r($arr);
?>
輸出：
非誠(chéng)
Array ( [firstname] => 闈炶瘹 [lastname] => 鍕挎壈 [contact] => stdClass Object ( [email] => fcwr@jb51.net [website] => http://www.jb51.net ) )
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