php返回json数据函数实例,php返回json实例
php返回json数据函数实例,php返回json实例
本文实例讲述了php返回json数据函数的用法,分享给大家供大家参考。具体方法如下:
json_encode()函数用法:
echo json_encode(array('a'=>'bbbb','c'=>'ddddd');
这样就会生成一个标准的json格式的数据
<?php //需要执行的SQL语句 //单条 $sql="select id,name from tbl_user where id=1"; //多条数据 //$sql="select id,name from tbl_user"; //调用conn.php文件进行数据库操作 require('Conn.php'); //提示操作成功信息,注意:$result存在于conn.php文件中,被调用出来 if($result) { // $array=mysql_fetch_array($result,MYSQL_ASSOC); /*数据集 $users=array(); $i=0; while($row=mysql_fetch_array($result,MYSQL_ASSOC)){ echo $row['id'].'-----------'.$row['name'].'</br>'; $users[$i]=$row; $i++; } echo json_encode(array('dataList'=>$users)); */ /*单条数据*/ $row=mysql_fetch_row($result,MYSQL_ASSOC); echo json_encode(array('jsonObj'=>$row)); } mysql_free_result($result); //释放结果 mysql_close(); //关闭连接 ?>
上面是数据库生成json数据
单条数据:{"jsonObj":{"id":"1","name":"lmw"}}
多条数据:{"dataList":[{"id":"1","name":"lmw"},{"id":"2","name":"xxj"},{"id":"3","name":"xxxj"}]}
现在很多情况下,我们需要程序返回一个Json格式的结果,比如:
{ "UserKeyGetResponse": {"RequestName":"e99e6d63e8c712d7699f52978a","api_key_value":"41954dd9b1cb6a95802eab6810"}, "error_response": {"code":"NO_ERROR","msg":"获取系统参数成功"} } 可以将结果写成这样的数组形式: $respon = array('UserKeyGetResponse' => array('RequestName' => $api_request_name, 'api_key_value' => $api_key_value), 'error_response' => array('code' => 'NO_ERROR', 'msg' => '获取系统参数成功'));
代码如下:
function arrayRecursive(&$array, $function, $apply_to_keys_also = false) { static $recursive_counter = 0; if (++$recursive_counter > 1000) { die('possible deep recursion attack'); } foreach ($array as $key => $value) { if (is_array($value)) { arrayRecursive($array[$key], $function, $apply_to_keys_also); } else { $array[$key] = $function($value); } if ($apply_to_keys_also && is_string($key)) { $new_key = $function($key); if ($new_key != $key) { $array[$new_key] = $array[$key]; unset($array[$key]); } } } $recursive_counter--; } g: $error_respon = array('code' => 'ERROR_MSG_MISS', 'msg' => '消息不存在'); echo JSON($array);
运行结果为:
{"code":"ERROR_MSG_MISS","msg":"消息不存在"}
客户端就可以解析这个结果了,当然错误码要用数字代替。
这样就好多了我们显示的直接是中文了,当然显示那个16进制的编码也是没有问题的。
希望本文所述对大家的PHP程序设计有所帮助。
你是用jquery发送的ajax请求!可以使用$.each(msg,function(item,index){
//item代表每个对象!
//index代表索引
});
参考sae的分布式抓取http页面的原理/
参考地址:e.sae.sina.com.cn/...pstore

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