Posted in PHP onDecember 24, 2011
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:
{ "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将数据编码成JSON格式:
<?php //php中用数组表示JSON格式数据 $arr = array( 'firstname' => iconv('gb2312', 'utf-8', '非诚'), 'lastname' => iconv('gb2312', 'utf-8', '勿扰'), 'contact' => array( 'email' =>'fcwr@3water.com', 'website' =>'https://3water.com', ) ); //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PHP代码,那么就需要将包含中文的内容使用iconv或者mb转为UTF-8再进行json_encode。
输出:(JSON格式)
{"firstname":"\u975e\u8bda","lastname":"\u52ff\u6270","contact":{"email":"fcwr@3water.com","website":"http:\/\/3water.com"}}
用php对JSON数据进行解码并处理:
<?php //php中用数组表示JSON格式数据 $arr = array( 'firstname' => iconv('gb2312', 'utf-8', '非诚'), 'lastname' => iconv('gb2312', 'utf-8', '勿扰'), 'contact' => array( 'email' =>'fcwr@3water.com', 'website' =>'https://3water.com', ) ); //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 '</br>'; //输出数组结构 print_r($arr); ?>
输出:
非诚
Array ( [firstname] => ??璇? [lastname] => ?挎? [contact] => stdClass Object ( [email] => fcwr@3water.com [website] => https://3water.com ) )
php操作JSON格式数据的实现代码
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