我有两个表，其中包含id，subject，exam，qution，qution_id，在表1中在表2中id，question_id，answer，correct，这里我有一个问题，从数据库中得到一个随机问题我正在使用
$singleSQL = mysql_query("SELECT * FROM questions WHERE id='$question' LIMIT 1");
while($row = mysql_fetch_array($singleSQL)){
$id = $row['id'];
$thisQuestion = $row['question'];
$type = $row['type'];
$subject =$row['subject'];
$exam =$row['exam'];
$explan =$row['explan'];
$question_id = $row['question_id'];
$s ='<strong>'.$subject.'</strong>';
$e ='<small>'.$exam.'</small>';
$q = '<h2>'.$thisQuestion.'</h2>';
$ex ='<p class="exp">'.$explan.'</p>';
$sql2 = mysql_query("SELECT * FROM answers WHERE question_id='$question' ORDER BY rand()");
while($row2 = mysql_fetch_array($sql2)){
$answer = $row2['answer'];
$correct = $row2['correct'];
$answers .= '<table class="table table-hover table-bordered"> <tr>
<td><label style="cursor:pointer;"><input type="radio" name="rads" value="'.$correct.'">'.$answer.'</label></td>
</tr></table>
<input type="hidden" id="qid" value="'.$id.'" name="qid"><br />
';
}
$output = ''.$s.','.$e.''.$q.','.$answers.''.$ex.' <span id="btnSpan"><button onclick="post_answer()" id="show">Submit</button></span>';
echo $output;
}
}
当我点击提交答案时，我会随机得到下一个问题像
index.php?question=
我在这里应该用什么当一个页面加载时，它应该从数据库中得到一个随机问题请帮我解决这个问题乙醇提前
也许你可以使用一个数组来存储问题id，并使用php的rand函数来生成一个随机数（它将在0和列表大小之间），这将是问题id列表的索引。
int rand ( int $min , int $max )
$randomparameter = mysql_query("SELECT MIN(id) as min_id,MAX(id) as max_id FROM questions ");
$row = mysql_fetch_array($randomparameter );
$random_questin_id=rand($row['min_id'],$row['min_id']);