Question

为什么这个文件没有循环数据？它仅显示最后一个（或“最近的”）记录。 [我应该很明显我是PHP的新手]

<head>
<style type="text/css">
<!--
body,td,th {
    font-family: Arial, Helvetica, sans-serif;
    font-size: 10pt;
}
-->
</style>
</head>

<br />
<a href="add.php">Add entry</a><br>
<br>

<?php

include("connect.php");

$result = mysql_query("SELECT * FROM qual");
$num = mysql_num_rows($result);

if ($num > 0 ) { $i=0;
 while ($i < $num) {

         $id = stripslashes(mysql_result($result,$i,"id"));
     $field1 = stripslashes(mysql_result($result,$i,"field1"));
     $field2 = stripslashes(mysql_result($result,$i,"field2"));
     $field3 = stripslashes(mysql_result($result,$i,"field3"));
     $field4 = stripslashes(mysql_result($result,$i,"field4"));
     $field5 = stripslashes(mysql_result($result,$i,"field5"));
     $field6 = stripslashes(mysql_result($result,$i,"field6"));
     $field7 = stripslashes(mysql_result($result,$i,"field7"));
     $field8 = stripslashes(mysql_result($result,$i,"field8"));
     $field9 = stripslashes(mysql_result($result,$i,"field9"));
     $field9 = stripslashes(mysql_result($result,$i,"field9"));
    $field10 = stripslashes(mysql_result($result,$i,"field10"));
    $field11 = stripslashes(mysql_result($result,$i,"field11"));
    $field12 = stripslashes(mysql_result($result,$i,"field12"));
    $field13 = stripslashes(mysql_result($result,$i,"field13"));

    $row = '<tr>
                <td>'.$num.'</td>
                <td>'.$field1.'</td>
                <td>'.$field2.'</td>
                <td>'.$field3.'</td>
                <td>'.$field4.'</td>
                <td>'.$field5.'</td>
                <td>'.$field6.'</td>
                <td>'.$field7.'</td>
                <td>'.$field8.'</td>
                <td>'.$field9.'</td>
                <td>'.$field9.'</td>
                <td>'.$field10.'</td>
                <td>'.$field11.'</td>
                <td>'.$field12.'</td>
                <td>'.$field13.'</td>
                <td><a href="update.php?id='.$id.'">Update</a></td>
                <td><a href="delete.php?id='.$id.'">Delete</a></td>
                </tr>';

++$i; }} else
{ $row = '<tr><td colspan="2" align="center">Nothing found</td></tr>'; }

mysql_close();
?>

<table width="150%" border="1" cellpadding="3" cellspacing="0" style="border-collapse: collapse" align="center">
        <tr>
            <td>field1</td>
            <td>field2</td>
            <td>field3</td>
            <td>field4</td>
            <td>field5</td>
            <td>field6</td>
            <td>field7</td>
            <td>field8</td>
            <td>field9</td>
            <td>field10</td>
            <td>field11</td>
            <td>field12</td>
            <td>field13</td>
            <td>&nbsp;</td>
            <td>&nbsp;</td>
       </tr>

<?php echo $row ?>
</table>

Answer 1

在if条件行之前，初始化$row = "";。

您必须连接if和else案例

中的行

不是$row = '<tr>

我应该

$row .= '<tr>

Answer 2

一个。您永远不需要在数据库结果上运行stripslashes，这意味着您错误地插入了数据。

B中。您应该切换到MySQLi / PDO，因为the original MySQL extension is now deprecated.

℃。您每次都在创建一个新的$row，并且最后只回显一次。

d。你真的为你的领域命名field1 - field13 ???

这可以写得那么简单。这是一个简单的PDO版本：

//Echo table header.

$sql = 'SELECT * FROM qual';
foreach ($conn->query($sql) as $row) {
   // echo the row contents now.
}

Answer 3

您在每次迭代时都会覆盖$row。在循环中使用$row .= '<tr>...来连接行。

Answer 4

从：

开始

<?php

include("connect.php");

你可以用这个：

$result = mysql_query("SELECT * FROM qual");
$toStamp = "";
if(mysql_num_rows($result) > 0){
 while($row = mysql_fetch_array($result)){
  $id = stripslashes($row["id"]);
  $field1 = stripslashes($row["field1"]);
  //etc

  $toStamp = $toStamp.'<tr><td>'.$id.'</td> // Adding this line to the existing $row
            <td>'.$field1.'</td>
            //etc
 } else {
  $toStamp = '<tr><td colspan="2" align="center">Nothing found</td></tr>';
}
}

//编辑了一点，删除了一些代码错误。

Answer 5

您是否尝试在循环前显示$ num值，以检查您的查询确实有多于1个结果？

PHP不循环数据

5 个答案: