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The whole process of developing APP interface with PHP (1)
- angryTomforward
- 2019-10-12 14:22:133944browse
1. Learning points:
Server side –> Database | Cache –> Call interface –> Client
2. APP Interface introduction: (PHP development APP interface)
PHP object-oriented interface: abstract class, interface definition==>interface.php
===>1. Very Specification
APP interface (communication interface): obtain data through the interface and fill the data into the APP
—>APP developer attention: request APP address (interface address) return data
APP (communication) interface definition:
1. Interface address: http://app.com/api.php?format=xml
2. Interface file: app. PHP handles some business logic
3. Interface data
(Recommended learning: PHP video tutorial)
3. Client APP communication :
How APP communicates:
C （接口地址：http://app.com/api.php?format=xml/json） S
客户端APP ------------------------------> 服务器
<-----------------------------
返回数据4. Client APP communication format difference
1.xml: extension tag Language (1. Used to mark data and define data types. It is a source language that allows users to define their own markup languages. The XML format is unified, cross-platform and language, very suitable for data transmission and communication, and has long been recognized by the industry. Standard)
<?xml version="1.0" encoding="UTF-8"?>
<item>
<title>测试</title>
<test id="1">
<description>测试oen</description>
<address>深圳</address>
</item>2.json: A cool-level data exchange format with good readability and easy to write quickly. It can be used for data exchange on different platform certificates. JSON uses high compatibility , completely independent of the language text format. This property makes JSON an ideal data exchange language.
The readability of XML is better, the data generation of JSON (json_encode (array)) and the transmission speed are better
5. What the APP interface does:
Get data: Get data from the database or cache, and then return the data to the client through the interface
Submit data: Submit the data to the server through the interface, and then enter the database for processing through the server, or other processing
6.JSON encapsulation communication interface
PHP generates json data: json_encode($arr);
Note: This function can only accept UTF -8 encoded data, if you pass data in other formats, the function will return null
Communication data annotation format:
code 状态码（200 400等） message 提示信息（邮箱格式不正确；数据返回成功等） data 返回相应的数据 —————————- -JSON code : 200 message ：”数据返回成功” -data id ：1 name : “测试”
Instance:
某个server中：
public function json($code,$message = '',$data = array())
{
if (!is_numeric($code)){
return '错误';
}
$result = array(
'code' => $code,
'message' => $message,
'data' => $data
);
echo json_encode($result);
exit;
}A certain Controller:
public function jsonsAction()
{
$arr = array(
'id' => 1,
'name' => 'jiang'
);
$k = wei()->zhwCategory()->json(200,'成功咯',$arr);
return $k;
}Browser: http://127.0.0.1/admin/zhw-categorys/jsons
{"code":200,"message":"\u6210\u529f\u54af","data":{"id":1,"name":"jiang"}}7.PHP generates XML data:
7.1 PHP generates XML data
1. Assemble string
2. Use system class: DomDocument
XMLWriter
SimpleXML
If used DomDocument:
<?php
$dom = new DomDocument('1.0','utf-8');
$element = $dom->createElement('test','This id root element');
$dom->appendChild($element);
echo $dom->saveXML();
?>====>Result:
<?xml version="1.0" encoding="utf-8"?>
<test>This is the root element</test>Simple instantiation using assembled string:
public static function xml()
{
header("Content-Type:text/html");
$xml = "<?xml version='1.0' encoding='UTF-8'?>\n";
$xml .= "<root>\n";
$xml .= "<code>200</code>\n";
$xml .= "<message>数据返回成功</message>\n";
$xml .= "<data>\n";
$xml .="<id>1</id>\n";
$xml .="<name>测试</name>\n";
$xml .="</data>\n";
$xml .="<root>";
echo $xml;
} 7.2封装XML数据方法：
封装方法：xmlEncode($code,$message='',$data = array());
data数据分析：
1.array('index' => 'api');
2.array(1,7.89);
具体：
server模块下： public function xmlEncode($code,$message = '',$data=array())
{
if(!is_numeric($code)){
return "错误";
}
$result = array(
'code' => $code,
'message' => $message,
'data' => $data,
);
header("Content-Type:text/xml");
$xml = "<?xml version='1.0' encoding='UTF-8'?>\n";
$xml .= "<root>\n";
$xml .=self::xmlToEncode($result);
$xml .="</root>";
echo $xml;
}//对数据再处理
public function xmlToEncode($data){
$xml = $attr ="";
foreach ($data as $key=>$value){
if(is_numeric($key)){
$attr = "id='{$key}'";
$key = "item";
}
$xml .= "<{$key} {$attr}>"; //它们{$key} {$attr}之间要有一个小空格
$xml .=is_array($value) ? self::xmlToEncode($value):$value;
$xml .="</{$key}>\n";
}
return $xml;
}某个Controller:
public function xmlsAction()
{
$arr = array(
'id' => 1,
'name' => 'jiang',
'type' =>array(4,5,6),
'test' =>array(1,45,67=>array(1,2,3)),
);
$k = wei()->zhwCategory()->xmlEncode(200,'成功咯',$arr);
return $k;
}8 .Comprehensive method of encapsulating communication data:
封装方法：show($code,$message,$data=array(),$type='json/xml')
Final page:
server:
<?php
namespace Miaoxing\Zhw\Service;
use miaoxing\plugin\BaseModel;
class ZhwCategory extends BaseModel
{
const JSON = "json";
/**
* 按x综合方式输出通信数据
* @param integer $code 状态码
* @param string $message 提示信息
* @param array $data 数据
* @param string $type 数据类型
* return string
*/
public function show($code,$message='',$data=array(),$type = self::JSON)
{
if (!is_numeric($code)){
return "错误编码";
}
$result = array(
'code' => $code,
'message' => $message,
'data' => $data,
);
if($type == 'json'){
self::json($code,$message,$data);
exit;
}elseif($type == 'array'){
var_dump($result);
}elseif ($type == 'xml'){
self::xmlEncode($code,$message,$data);
exit;
}else{
//TODO
}
}
/**
* 按json方式输出通信数据
* @param integer $code 状态码
* @param string $message 提示信息
* @param array $data 数据
* return string
*/
public function json($code,$message = '',$data = array())
{
if (!is_numeric($code)){
return '错误';
}
$result = array(
'code' => $code,
'message' => $message,
'data' => $data
);
echo json_encode($result);
exit;
}
/**
* 按xml方式输出通信数据
* @param integer $code 状态码
* @param string $message 提示信息
* @param array $data 数据
* return string
*/
public function xmlEncode($code,$message = '',$data=array())
{
if(!is_numeric($code)){
return "错误";
}
$result = array(
'code' => $code,
'message' => $message,
'data' => $data,
);
header("Content-Type:text/xml");
$xml = "<?xml version='1.0' encoding='UTF-8'?>\n";
$xml .= "<root>\n";
$xml .=self::xmlToEncode($result);
$xml .="</root>";
echo $xml;
}
//对数据再处理
public function xmlToEncode($data){
$xml = $attr ="";
foreach ($data as $key=>$value){
if(is_numeric($key)){
$attr = "id='{$key}'";
$key = "item";
}
$xml .= "<{$key} {$attr}>";
$xml .=is_array($value) ? self::xmlToEncode($value):$value;
$xml .="</{$key}>\n";
}
return $xml;
}
}Controller:
public
function jsonsAction()
{
$arr = array(
'id' => 1,
'name' => 'jiang'
);
$k = wei()-
>zhwCategory()->json(200,'成功咯',$arr);
return $k;
}
public function xmlsAction()
{
$arr = array(
'id' => 1,
'name' => 'jiang',
'type' =>array(4,5,6),
'test' =>array(1,45,67=>array(1,2,3)),
);
$k = wei()->zhwCategory()->xmlEncode(200,'成功咯',$arr);
return $k;
}
public function showAction()
{
$arr = array(
'id' => 1,
'name' => 'jiang',
'type' =>array(4,5,6),
'test' =>array
(1,45,67=>array(1,2,3)),
);
$k = wei()->zhwCategory()->show(200,'成功咯',$arr,'json');
return $k;
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