本文实例讲述了PHP答题类应用接口的实现方法。分享给大家供大家参考。具体实现方法如下：

question_get.php文件如下：

复制代码 代码如下:<?php

session_cache_expire(60);

session_start();

if(!isset($_SESSION['zaszh_user_id'])){

echo json_encode(array('status'=>'error','msg'=>'连接超时，请重新打开页面。'));

exit;

}

$user_id = $_SESSION['zaszh_user_id'];

// $user_id = 1; // 测试用

// 随机获取5道问题

$question_id = array();

while(sizeof($question_id)<5){

$num_rand = mt_rand(1,114);

if(!in_array($num_rand, $question_id))

$question_id[] = $num_rand;

}

require('connect_database.php');

// 答题次数

$mysqli->query("update zaszh_user set answer_surplus=answer_surplus-1 where id={$user_id} and answer_surplus>0");

if($mysqli->affected_rows){

// 有剩余次数

}else{

// 无剩余次数

echo json_encode(array('status'=>'error','msg'=>'今日答题剩余次数已用完，明天再来哦~'));

$mysqli->close();

exit;

}

// 题目

if($stmt = $mysqli->prepare("select question,A,B,C,D,answer from zaszh_question where id in(?,?,")){

$stmt->bind_param('iiiii',$question_id[0],$question_id[1],$question_id[2],$question_id[3],$question_id[4]);

$stmt->execute();

$stmt->bind_result($question,$A,$B,$C,$D,$answer);

$rows = array();

while($stmt->fetch()){

$rows[] = array(

'question'=>$question,

'A'=>$A,

'B'=>$B,

'C'=>$C,

'D'=>$D,

'answer'=>$answer

);

}

// 答题记录

if($stmt = $mysqli->prepare("insert into zaszh_answer(user_id,question1,question2,question3,question4,question5,create_date) values(?,?,?,?,?,?,unix_timestamp(now()))")){

$stmt->bind_param('iiiiii',$user_id,$question_id[0],$question_id[1],$question_id[2],$question_id[3],$question_id[4]);

$stmt->execute();

if($answer_id = $stmt->insert_id){

$param = array(

'answer_id'=>$answer_id

);

echo json_encode(array_merge($rows,$param));

}else{

echo json_encode(array('status'=>'error','msg'=>'系统出错。'));

}

}

$stmt->close();

}

$mysqli->close();

希望本文所述对大家的php程序设计有所帮助。