PHP开发APP接口
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php以json或者xml 形式返回给app。明白这点就很好说了,就是把数据包装成json或者xml,返回给APP
定义抽象APP基类:
- <?php
- /**
- * 定义API抽象类
- */
- abstract class Api {
- const JSON = ‘Json‘;
- const XML = ‘Xml‘;
- const ARR = ‘Array‘;
- /**
- * 定义工厂方法
- * param string $type 返回数据类型
- */
- public static function factory($type = self::JSON) {
- $type = isset($_GET[‘format‘]) ? $_GET[‘format‘] : $type;
- $resultClass = ucwords($type);
- require_once(‘./Response/‘ . $type . ‘.php‘);
- return new $resultClass();
- }
- abstract function response($code, $message, $data);
- }
以xml形式返回给APP:
- <?php
- class Xml extends Api {
- public function response($code, $message = ‘‘, $data = array()) {
- if(!is_numeric($code)) {
- return ‘‘;
- }
- $result = array(
- ‘code‘ => $code,
- ‘message‘ => $message,
- ‘data‘ => $data
- );
- header(‘Content-Type:text/xml‘);
- $xml = "<?xml version=‘1.0‘ encoding=‘UTF-8‘?>\n";
- $xml .= "<root>";
- $xml .= self::xmlToEncode($result);
- $xml .= "</root>";
- echo $xml;
- }
- public static function xmlToEncode($result) {
- $xml = $attr = ‘‘;
- foreach($result as $key => $value) {
- //判断键值对,如果是数字键值不允许
- if(is_numeric($key)) {
- $attr = " id=‘" . $key . "‘";
- $key = "item";
- }
- $xml .= "<{$key}{$attr}>";
- //以递归形式返回,主要是因为数组在xml中显示是array,必须显示出来具体键值对
- $xml .= is_array($value) ? self::xmlToEncode($value) : $value;
- $xml .= "</{$key}>\n";
- }
- return $xml;
- }
- }
以json格式返回数据:
- <?php
- /**
- * 按xml方式输出通信数据
- */
- class Json extends Api {
- public function response($code, $message = ‘‘, $data = array()) {
- if(!(is_numeric($code))) {
- return ‘‘;
- }
- $result = array(
- ‘code‘ => $code,
- ‘message‘ => $message,
- ‘data‘ => $data
- );
- echo json_encode($result);
- exit;
- }
- }
也可以采用这种方式组装返回数据:
- <?php
- class Response {
- const JSON = "json";
- /**
- * 按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 $type 数据类型
- * return string
- */
- public static function show($code, $message = ‘‘, $data = array(), $type = self::JSON) {
- if(!is_numeric($code)) {
- return ‘‘;
- }
- $type = isset($_GET[‘format‘]) ? $_GET[‘format‘] : self::JSON;
- $result = array(
- ‘code‘ => $code,
- ‘message‘ => $message,
- ‘data‘ => $data,
- );
- if($type == ‘json‘) {
- self::json($code, $message, $data);
- exit;
- } elseif($type == ‘array‘) { //适合调试代码
- 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 $data 数据
- * return string
- */
- public static function json($code, $message = ‘‘, $data = array()) {
- if(!is_numeric($code)) {
- return ‘‘;
- }
- $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 $data 数据
- * return string
- */
- public static function xmlEncode($code, $message, $data = array()) {
- if(!is_numeric($code)) {
- return ‘‘;
- }
- $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 $xml;
- }
- public static function xmlToEncode($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;
- }
- }
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