注意：不明指標：俠諾在C：\\ XAMPP \ htdocs中\，

我試圖從存儲SQL數據庫（$演示）變量（$ Q11），但我得到的錯誤注意：不明指標：俠諾在C：\ XAMPP htdocs中，

注意：不明指標：俠諾在C：\ XAMPP \ htdocs中\，......

請這個錯誤一些人給解決

<?php 
$connect = mysql_connect("localhost","root","") 
or die(mysql_error()); 
$sel=mysql_select_db("demo"); 

$query1 = mysql_query("SELECT * FROM `linuxq` ORDER BY RAND() LIMIT 10 "); 

echo "<h4 align='Center'><u>Linux Questions</u><br></h4>"; 

$rows11 = mysql_fetch_array($query1); 
$q11 = $rows11['QNo']; 
$qus11 = $rows11['Question']; 
$a = $rows11['Opt1']; 
$b = $rows11['Opt2']; 
$c = $rows11['Opt3']; 
$d = $rows11['Opt4']; 
$ans11 = $rows11['Ans']; 


echo " <b>Question:-<br></b>$qus11 <br>"; 
echo " <input type=radio name = 'answer$q11' value = '$a'></input>$a &nbsp &nbsp"; 
echo " <input type=radio name = 'answer$q11' value = '$b'></input>$b &nbsp &nbsp"; 
echo " <input type=radio name = 'answer$q11' value = '$c'></input>$c &nbsp &nbsp "; 
echo " <input type=radio name = 'answer$q11' value = '$d'></input>$d <br><br> ";

來源

2014-09-27 Redsun

使用while循環來打印數據，因爲你從數據庫中獲取10條記錄 – Khushboo 2014-09-27 10:48:25

http://siliconstation.com/how-fix-php-notice-undefined-index/ – mahen3d 2014-09-27 10:49:22

@Khushboo更多的if語句，如果他只喜歡一行... – bwoebi 2014-09-27 10:49:22

無論如何，以避免不必要的錯誤信息在你的情況，你應該檢查記錄計數查詢通過添加例如：

... 
$query1 = mysql_query("SELECT * FROM `linuxq` ORDER BY RAND() LIMIT 10 "); 
echo "<h4 align='Center'><u>Linux Questions</u><br></h4>"; 

if(mysql_num_rows($query1)>0) {  
    $rows11 = mysql_fetch_array($query1); 
    $q11 = $rows11['QNo']; 
    $qus11 = $rows11['Question']; 
    $a = $rows11['Opt1']; 
    $b = $rows11['Opt2']; 
    $c = $rows11['Opt3']; 
    $d = $rows11['Opt4']; 
    $ans11 = $rows11['Ans']; 

    echo " <b>Question:-<br></b>$qus11 <br>"; 
    echo " <input type=radio name = 'answer$q11' value = '$a'></input>$a &nbsp &nbsp"; 
    echo " <input type=radio name = 'answer$q11' value = '$b'></input>$b &nbsp &nbsp"; 
    echo " <input type=radio name = 'answer$q11' value = '$c'></input>$c &nbsp &nbsp "; 
    echo " <input type=radio name = 'answer$q11' value = '$d'></input>$d <br><br> "; 
} 
...

而且我想你對你的表的幾個問題，但我沒有看到任何環路，也許你忘了發佈它...

來源

2014-09-27 12:08:55

嘗試以下： -

$q11 = $rows11[0]['QNo']; 
$qus11 = $rows11[0]['Question']; 
$a = $rows11[0]['Opt1']; 
$b = $rows11[0]['Opt2']; 
$c = $rows11[0]['Opt3']; 
$d = $rows11[0]['Opt4']; 
$ans11 = $rows11[0]['Ans'];

來源

2014-09-27 10:58:04 Khushboo

咦？它是mysql_fetch_array（），而不是PDO_Stmt :: fetchAll（）... – bwoebi 2014-09-27 10:59:22

但是，這也將打印值 – Khushboo 2014-09-27 11:01:25

警告C：\\ xampp \ htdocs \中的非法字符串偏移'QNo'， – Redsun 2014-09-27 11:04:05

注意：不明指標：俠諾在C：\\ XAMPP \ htdocs中\，

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