php的json数据包编码和解析

来源：互联网发布：淘宝假冒材质成分编辑：程序博客网时间：2024/05/06 02:20

一 知识点01 php关联数组   $age=array("Peter"=>"35","Ben"=>"37","Joe"=>"43");   foreach($age as $x => $x_value)   {       echo "键名".$x." 键值".$x_value;   }02 php的json_ecode函数   phase:   string json_encode ( $value [, $options = 0 ] )   ex:   $arr = array('a' => 1, 'b' => 2, 'c' => 3, 'd' => 4, 'e' => 5);   echo json_encode($arr);03 php的json_decode函数   phase:   mixed json_decode ($json [,$assoc = false [, $depth = 512 [, $options = 0 ]]])   ex:   $json = '{"a":1,"b":2,"c":3,"d":4,"e":5}';   json_decode($json,true);    // true,解码为数组；false解码为对象

二 实践  <?php  // 解析微信公众号的json数据包格式;  $json_string = '{"access_token":"ACCESS_TOKEN","expires_in":7200}';  $data = json_decode($json_string,true);  var_dump($data);  // 数组编码为json数据包;  $arrTemp = array("access_token" => "ACCESS_TOKEN","expires_in"=> 7200);  $json_data = json_encode($arrTemp);  var_dump($json_data);?>

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