Home > Article > Backend Development > The whole process of developing APP interface with PHP (1)
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; }
The above is the detailed content of The whole process of developing APP interface with PHP (1). For more information, please follow other related articles on the PHP Chinese website!