php的api数据接口书写实例(推荐)

以下是接口代码实例：

    <?php
    $output = array();
    $a = @$_GET['a'] ? $_GET['a'] : '';
    $uid = @$_GET['uid'] ? $_GET['uid'] : 0;
    if (empty($a)) {
      $output = array('data'=>NULL, 'info'=>'坑爹啊!', 'code'=>-201);
      exit(json_encode($output));
    }
    //走接口
    if ($a == 'get_users') {
      //检查用户
      if ($uid == 0) {
    $output = array('data'=>NULL, 'info'=>'The uid is null!', 'code'=>-401);
    exit(json_encode($output));
      }
      //假设 $mysql 是数据库
      $mysql = array(
    10001 => array(
      'uid'=>10001,
      'vip'=>5,
      'nickname' => 'Shine X',
      'email'=>'979137@qq.com',
      'qq'=>979137,
      'gold'=>1500,
      'powerplay'=> array('2xp'=>12,'gem'=>12,'bingo'=>5,'keys'=>5,'chest'=>8),
      'gems'=> array('red'=>13,'green'=>3,'blue'=>8,'yellow'=>17),
      'ctime'=>1376523234,
      'lastLogin'=>1377123144,
      'level'=>19,
      'exp'=>16758,
    ),
    10002 => array(
      'uid'=>10002,
      'vip'=>50,
      'nickname' => 'elva',
      'email'=>'elva@ezhi.net',
      'qq'=>NULL,
      'gold'=>14320,
      'powerplay'=> array('2xp'=>1,'gem'=>120,'bingo'=>51,'keys'=>5,'chest'=>8),
      'gems'=> array('red'=>13,'green'=>3,'blue'=>8,'yellow'=>17),
      'ctime'=>1376523234,
      'lastLogin'=>1377123144,
      'level'=>112,
      'exp'=>167588,
    ),
    10003 => array(
      'uid' => 10003,
      'vip' => 5,
      'nickname' => 'Lily',
      'email' => 'Lily@ezhi.net',
      'qq' => NULL,
      'gold' => 1541,
      'powerplay'=> array('2xp'=>2,'gem'=>112,'bingo'=>4,'keys'=>7,'chest'=>8),
      'gems' => array('red'=>13,'green'=>3,'blue'=>9,'yellow'=>7),
      'ctime' => 1376523234,
      'lastLogin'=> 1377123144,
      'level' => 10,
      'exp' => 1758,
    ),
      );

      $uidArr = array(10001,10002,10003);
      if (in_array($uid, $uidArr, true)) {
    $output = array('data' => NULL, 'info'=>'The user does not exist!', 'code' => -402);
    exit(json_encode($output));
      }
      //查询数据库
      $userInfo = $mysql[$uid];

      //输出数据
      $output = array(
    'data' => array(
      'userInfo' => $userInfo,
      'isLogin' => true,//是否首次登陆
      'unread' => 4,//未读消息数量
      'untask' => 3,//未完成任务
    ), 
    'info' => 'Here is the message which, commonly used in popup window', //消息提示，客户端常会用此作为给弹窗信息。
    'code' => 200, //成功与失败的代码，一般都是正数或者负数
      );
      exit(json_encode($output));
    } elseif ($a == 'get_games_result') {
      //...
      die('您正在调 get_games_result 接口!');
    } elseif ($a == 'upload_avatars') {
      //....
      die('您正在调 upload_avatars 接口!');
    }

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