PHP method to implement app interface and return json data
This article mainly introduces the method of php implementing the app interface and returning json data. Interested friends can refer to it. I hope it will be helpful to everyone.
Step one: conn.PHP file, used to connect database and define the interface format, the code is as follows ：
<?php
header("charset=utf-8");
$servername="localhost";
$username="root";
$password="root";
$dbname="test";
$conn = mysql_connect($servername,$username,$password);
if(!$conn){
echo "数据库连接失败！";
}
mysql_select_db($dbname);
class Response{
public static function json($code,$message="",$data=array()){
$result=array(
'code'=>$code,
'message'=>$message,
'data'=>$data
);
//输出json
echo json_encode($result);
exit;
}
}
?>Step 2: text.php, used to convert the data in the database into a json string and output:
<?php
require_once('conn.php');
/*
*选择数据表
* */
$sqla = "SELECT * from user";
$result = mysql_query($sqla,$conn);
$dataarr = array();
while($row = mysql_fetch_array($result)){
$dataarr[]=$row;
}
$id=$_GET['id'];
if($id==1){
Response::json(1,'数据返回成功',$dataarr);
}else if($id==2){
Message::json(0,'失败');
}
?>The third step: text.html, ajax loads json data and displays:
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
<script src="jquery/2.0.0/jquery.min.js"></script>
</head>
<body>
<input id="text" type="text"/>
<input type="button" id="tijiao" value="提交" />
<p id="tex"></p>
<script type="text/javascript">
$("#tijiao").click(function(){
var data={"id":$("#text").val()}
$.get("text.php?flag=showmessage",data,function(res){
res=JSON.parse(res);//<span style="color:#cc0000;">将json字符串转化为json对象</span>
if(res.code==1){
$("#tex").empty();
$.each(res.data, function(x,y) {
$("#tex").append("id:"+y.id+"/姓名:"+y.username+"<br>");
});
}
})
})
</script>
</body>
</html>Related recommendations:
getJSON() asynchronously requests the server to return json format data (graphic tutorial)
JSON object definition in JS Detailed explanation of the value implementation steps
Json-lib processing solution when using frameworks such as Ajax or Easyui (graphic tutorial)
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