PHP应用：如何使用jQuery+PHP+MySQL来实现一个在线测试项目

PHP教程
<div id="quiz-container"></div> 

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<?php 
include_once("connect.php");//连接数据库 
 
$sql = "select * from quiz order by id asc"; 
$query = mysql_query($sql); //查询数据 
while($row=mysql_fetch_array($query)){ 
  $answers = explode('###',$row['answer']); //将答案选项分开 
  $arr[] = array( 
    'question' => $row['id'].'、'.$row['question'], //题目 
    'answers' => $answers //答案选项 
  ); 
} 
$json = json_encode($arr); //转换json格式 
?> 

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$(function(){ 
  $('#quiz-container').jquizzy({ 
    questions: <?php echo $json;?>, //试题信息 
    sendResultsURL: 'data.php' //结果处理地址 
  }); 
}); 

PHP教程
include_once("connect.php"); //连接数据库 
 
$data = $_REQUEST['an']; //获取答题信息 
$answers = explode('|',$data); //分析数据 
$an_len = count($answers)-1; //题目数 
 
$sql = "select correct from quiz order by id asc"; 
$query = mysql_query($sql); //查询表 
$i = 0; 
$score = 0; //初始得分 
$q_right = 0; //答对的题数 
while($row=mysql_fetch_array($query)){ 
  if($answers[$i]==$row['correct']){ //比对正确答案 
    $arr['res'][] = 1; //正确 
    $q_right += 1; //正确答题数+1 
  }else{ 
    $arr['res'][] = 0; //错误 
  } 
  $i++; 
} 
$arr['score'] = round(($q_right/$an_len)*100); //计算总得分 
echo json_encode($arr); 

PHP教程
if (config.sendResultsURL !== null) { 
  var collate = []; 
  var myanswers = ''; 
  //获取用户所答题的答案 
  for (r = 0; r < userAnswers.length; r++) { 
    collate.push('{"questionNumber":"' + parseInt(r + 1, 10) + '", "userAnswer":"' + userAnswers[r] + '"}'); 
    myanswers = myanswers + userAnswers[r]+'|'; 
  } 
   
  //Ajax交互 
  $.getJSON(config.sendResultsURL,{an:myanswers},function(json){ 
    if(json==null){ 
      alert('通讯失败!'); 
    }else{       
      var corects = json['res']; 
      $.each(corects,function(index,array){ 
        resultSet += '<div class="result-row">' + (corects[index] === 1 ? "<div class='correct'>#"+(index + 1)+"<span></span></div>": "<div class='wrong'>#"+(index + 1)+"<span></span></div>")+'</div>'; 
      }); 
      resultSet = '<h2 class="qTitle">' + judgeSkills(json.score) + '<br/> 您的分数： ' + json.score + '</h2><div class="jquizzy-clear"></div>' + resultSet + '<div class="jquizzy-clear"></div>'; 
             
             
      superContainer.find('.result-keeper').html(resultSet).show(500); 
    }   
  }); 
} 

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CREATE TABLE IF NOT EXISTS `quiz` ( 
 `id` int(11) NOT NULL AUTO_INCREMENT, 
 `question` varchar(100) NOT NULL, 
 `answer` varchar(500) NOT NULL, 
 `correct` tinyint(2) NOT NULL, 
 PRIMARY KEY (`id`) 
) ENGINE=MyISAM DEFAULT CHARSET=utf8;