案例----查询成绩

HTML

  
  
  
  



  

    

      学号： 

      
    

  

PHP

  
  
  
  



  

     "张三", "chinaese" => "140", "math" => "149", "english" => "120");
    $arr['124'] = array("username" => "李四", "chinaese" => "40", "math" => "142", "english" => "10");
    $arr['125'] = array("username" => "王五", "chinaese" => "120", "math" => "12", "english" => "20");
    $arr['126'] = array("username" => "赵六", "chinaese" => "110", "math" => "119", "english" => "50");

    // 如果是管理员，则遍历所有成绩
    if ($code == 'admin') {
      foreach ($arr as $key => $value) {
        echo "

        
姓名：$value[username]
        
语文：$value[chinaese]
        
数学：$value[math]
        
英语：$value[english]
      
";
      }
    } else {
      // 所输入学号的成绩
      $score = $arr[$code];
      echo "

        
姓名：$score[username]
        
语文：$score[chinaese]
        
数学：$score[math]
        
英语：$score[english]
      
";
    }
    ?>