我想在数据库中显示有关在线资质测试的问题。我生成代码以随机显示10个问题。
但主要问题是问题在重复。我不想在问题文件中重复提问。
这是随机显示问题的代码: -
<html>
<body>
<form action="./eval.php" method="post">
<?php
$connect = mysql_connect("localhost" ,"root","");
mysql_select_db("aptitude");
for ( $i = 1; $i < 11; ++$i )
{
$query = mysql_query("SELECT * FROM `main` ORDER BY RAND() LIMIT 1 ");
while($rows = mysql_fetch_array($query)):
$q = $rows['Q_no'];
$qus = $rows['Question'];
$a = $rows['answer1'];
$b = $rows['answer2'];
$c = $rows['answer3'];
$d = $rows['answer4'];
$ans = $rows['correct'];
echo "Q$i:-$qus <br>";
echo "A <input type=radio name = 'answer[$q]' value = '$a'></input>$a    ";
echo "B <input type=radio name = 'answer[$q]' value = '$b'></input>$b    ";
echo "C <input type=radio name = 'answer[$q]' value = '$c'></input>$c     ";
echo "D <input type=radio name = 'answer[$q]' value = '$d'></input>$d <br><br> ";
endwhile;
}
?>
<center><input name="cmdSubmit" type="submit" id="cmdSubmit" value="Submit"/>
</center>
</form>
</body>
</html>
答案 0 :(得分:1)
删除for循环,一次获取所有10个问题。只要数据库中没有双重条目,这将为您提供10个独特的问题。
$query = mysql_query("SELECT * FROM `main` ORDER BY RAND() LIMIT 10 ");
while($rows = mysql_fetch_array($query)){
$q = $rows['Q_no'];
$qus = $rows['Question'];
$a = $rows['answer1'];
$b = $rows['answer2'];
$c = $rows['answer3'];
$d = $rows['answer4'];
$ans = $rows['correct'];
echo "Q$i:-$qus <br>";
echo "A <input type=radio name = 'answer[$q]' value = '$a'></input>$a    ";
echo "B <input type=radio name = 'answer[$q]' value = '$b'></input>$b    ";
echo "C <input type=radio name = 'answer[$q]' value = '$c'></input>$c     ";
echo "D <input type=radio name = 'answer[$q]' value = '$d'></input>$d <br><br> ";
}
}