PHP开发APP接口（一）

来源：互联网发布：深入理解java构造器编辑：程序博客网时间：2024/05/29 18:45

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：

<?phpclass 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：

<?phpclass 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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