简单接口(非框架)

一.配置好两个域名

一个用于服务端接收请求并返回数据，www.api.com

一个用于移动端app发送请求,www.app.com

二.创建两个目录

三.interface目录里边写接口（代码如下）

<?php

//1.先判断接值方式----先定义数组

$type=array("GET","POST","REQUEST","PUT","DELETE");

//接值方式

$method=$_SERVER['REQUEST_METHOD'];

//返回值类型

$GLOBALS['retype']=isset($_REQUEST['retype'])?$_REQUEST['retype']:'jsonp';

$arr=[];

if(!in_array($method,$type)){

$arr['code']='401';

$arr['content']="the method is undefined";

exit(getinterface($arr));

}

$action=isset($_REQUEST['action'])?$_REQUEST['action']:"";

//2.判断数据的有效性

if(empty($action)){

$arr['code']='402';

$arr['content']="the action is undefined";

exit(getinterface($arr));

}

if($action=='register'){

$name=isset($_REQUEST['name'])?$_REQUEST['name']:"";

$pwd=isset($_REQUEST['pwd'])?$_REQUEST['pwd']:"";

if(empty($name)||empty($pwd)){

$arr['code']='403';

$arr['content']="the params is empty";

exit(getinterface($arr));

}else{

$sql="select admin_name from admin1 where admin_name='$name'";

$pdo=connect();

$re=$pdo->query($sql)->fetch(PDO::FETCH_NUM);

if($re){

$arr['code']='404';

$arr['content']="the username is already be used";

exit(getinterface($arr));

}else{

$sql="insert into admin1 (admin_name,admin_pwd) value('$name','$pwd')";

$re=$pdo->exec($sql);

if($re){

$arr['code']='200';

$arr['content']="success";

exit(getinterface($arr));

}else{

$arr['code']='405';

$arr['content']="network is wrong,please try again";

exit(getinterface($arr));

}

}

}

}

//3.调用对应的接口

//4.返回数据

function getinterface($arr){

if($GLOBALS['retype']=='xml'){

return enxml($arr);

}else{

return $_REQUEST['callback'].enjson($arr);

}

}

function enjson($arr){

return json_encode($arr);

}

function enxml($arr){

header('content-type:text/xml;charset=utf8');

$newXml = new SimpleXMLElement('<?xml version="1.0" encoding="utf-8"?><root></root>');

foreach ($arr as $key => $value) {

if(is_numeric($key))

{

$key = 'code';

}

if(is_array($value)){

enxml($value,$newXml->addchild($key));

}else

{

$newXml->addchild($key,$value);

}

}

return $newXml->asXML();

}

//连接数据库

function connect(){

$dns="mysql:host=localhost;dbname=test";

$pdo=new PDO($dns,'root','');

$pdo->exec("set names utf8");

return $pdo;

}

四.app目录里边调用接口

<?php

//模拟get请求（同步请求）

// $json=file_get_contents("http://www.api.com/api.php?action=register&callback=show&name=111&pwd=11");

// echo $json;

//模拟post请求（异步请求）

$url = "http://www.api.com/api.php";

$post_data = array ("name" => "222","pwd" => "222","action"=>"register","callback"=>"show","retype"=>"json");

$ch = curl_init();curl_setopt($ch, CURLOPT_URL, $url);curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);// post数据

curl_setopt($ch, CURLOPT_POST, 1);// post的变量

curl_setopt($ch, CURLOPT_POSTFIELDS, $post_data);

$output = curl_exec($ch);

curl_close($ch);

//打印获得的数据

print_r($output);