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我有一個基本的PHP表單（幾個字段和2個複選框，我想稍後添加更多的複選框，但現在我只用2進行測試）在PHP中。字段和複選框保存到MySQL數據庫中，並且效果很好。複選框簽入狀態基於MySQL和PHP
我也有一個'編輯'窗體，它反映了原始輸入窗體，只是字段的值是根據行ID從MySQL數據庫加載的，這是非常標準的。
問題是，此刻，編輯窗體的最後一個字段只是另一個文本輸入字段。我想要做的是更改爲複選框，將根據原始表單的輸入來選中或取消選中。
我想有一個需要使用ischecked，但我不確定是否需要更改原始表單的邏輯，或者如果我需要更改數據庫本身（我希望不是！）。
數據庫正是如此佈局：
-------------------------------------------------------------------------------------------
| ID (int) | ARTICLEAUTHOR (varchar) | ARTICLEORGANIZATION (varchar) | ARTICLETAGS (varchar)|
-------------------------------------------------------------------------------------------
而對於這兩種形式的代碼如下。
首先，新的報名表：
// addnew.php
<?php
function renderForm($articletitle, $articleorganization, $articledate, $articleurl, $articletags)
. . .
</head>
<body>
. . .
<form id="form" name="form" action="" method="post">
<h1>Create a new entry in the database</h1>
<table width="100%" border="0" cellpadding="6">
<tr>
<td colspan="2"><legend>Article details</legend></td>
</tr>
<tr>
<td width="20%" align="right"><span class="field">Article Title:</span></td>
<td width="80%" align="left"><span class="field">
<input name="articletitle" type="text" value="<?php echo $articletitle; ?>" size="50"/>
</span></td>
</tr>
<tr>
<td align="right"><span class="field">Article Author:</span></td>
<td align="left"><span class="field">
<input name="articleorganization" type="text" value="<?php echo $articleorganization; ?>" size="50"/>
</span></td>
</tr>
<tr>
<td align="right"><span class="field">Article Date:</span></td>
<td align="left"><span class="field">
<input name="articledate" type="text" value="<?php echo $articledate; ?>" size="50"/>
</span></td>
</tr>
<tr>
<td align="right"><span class="field">Article URL:</span></td>
<td align="left"><span class="field">
<input name="articleurl" type="text" value="<?php echo $articleurl; ?>" size="50"/>
</span></td>
</tr>
</table>
. . .
<input type="checkbox" name="articletags[]" value="checkbox" id="articletags_0" />
<input type="checkbox" name="articletags[]" value="checkbox 2" id="articletags_1" />
</div>
</fieldset>
<footer><input type="submit" name="submit" value="Add this Article"></footer>
. . .
</form>
</div>
</div>
. . .
</body>
</html>
<?php
}
// connect to the database
include('settings.php');
if(count($articletags) > 0)
{
$articletags_string = implode(",", $articletags);
}
// check if the form has been submitted. If it has, start to process the form and save it to the database
if($_SERVER['REQUEST_METHOD'] == 'POST')
{
// get form data, making sure it is valid
$articletitle = mysql_real_escape_string(htmlspecialchars($_POST['articletitle']));
$articleorganization = mysql_real_escape_string(htmlspecialchars($_POST['articleorganization']));
$articledate = mysql_real_escape_string(htmlspecialchars($_POST['articledate']));
$articleurl = mysql_real_escape_string(htmlspecialchars($_POST['articleurl']));
$articletags = implode(',', $_POST['articletags']);
. . .
mysql_query("INSERT articles SET articletitle='$articletitle', articleorganization='$articleorganization', articledate='$articledate', articleurl='$articleurl', articletags='$articletags' ")
or die(mysql_error());
// once saved, redirect to success page
header("Location:addsuccess.php");
}
}
else
// if the form hasn't been submitted, display the form
{
renderForm('','','','');
}
?>
而現在的編輯形式：
<?php
. . .
function renderForm($id, $articletitle, $articleorganization, $articledate, $articleurl, $articletags)
{
?>
. . .
<div class="content">
<div id="stylized" class="myform">
<form id="form" name="form" action="" method="post">
<input type="hidden" name="id" value="<?php echo $id; ?>"/>
<h1>Edit Details for <?php echo $articletitle; ?></h1>
<table width="100%" border="0" cellpadding="6">
<tr align="center" valign="middle">
<td colspan="2"><legend>Article details</legend></td>
</tr>
<tr>
<td width="26%" align="right"><span class="field">Article Title</span></td>
<td width="74%" align="left"><span class="field">
<input name="articletitle" type="text" value="<?php echo $articletitle; ?>" size="50"/>
</span></td>
</tr>
<tr>
<td align="right"><span class="field">Article Author</span></td>
<td align="left"><span class="field">
<input name="articleorganization" type="text" value="<?php echo $articleorganization; ?>" size="50"/>
</span></td>
</tr>
<tr>
<td align="right"><span class="field">Article Date</span></td>
<td align="left"><span class="field">
<input name="articledate" type="text" value="<?php echo $articledate; ?>" size="50"/>
</span></td>
</tr>
<tr>
<td align="right"><span class="field">Article Url:</span></td>
<td align="left"><span class="field">
<input name="articleurl" type="text" value="<?php echo $articleurl; ?>" size="50"/>
</span></td>
</tr>
<tr>
<td align="right"><span class="field">Article Tags:</span></td>
<td align="left"><span class="field">
<input name="articletags" type="text" value="<?php echo $articletags; ?>" size="50"/>
</span></td>
</tr>
<tr align="center" valign="middle">
<td colspan="2"><input type="submit" name="submit" value="Submit" /></td>
</tr>
</table>
. . .
</fieldset>
<footer></footer></form>
</div>
</div>
<div class="footer">
. . .
<!-- end .footer --></div>
</body>
</html>
<?php
}
// connect to the database
include('settings.php');
// check if the form has been submitted. If it has, process the form and save it to the database
if (isset($_POST['submit']))
{
// confirm that the 'id' value is a valid integer before getting the form data
if (is_numeric($_POST['id']))
{
// get form data, making sure it is valid
$id = $_POST['id'];
$articletitle = mysql_real_escape_string(htmlspecialchars($_POST['articletitle']));
$articleorganization = mysql_real_escape_string(htmlspecialchars($_POST['articleorganization']));
$articledate = mysql_real_escape_string(htmlspecialchars($_POST['articledate']));
$articleurl = mysql_real_escape_string(htmlspecialchars($_POST['articleurl']));
$articletags = mysql_real_escape_string(htmlspecialchars($_POST['articletags']));
. . .
mysql_query("UPDATE articles SET articletitle='$articletitle', articleorganization='$articleorganization', articledate='$articledate', articleurl='$articleurl', articletags='$articletags' WHERE id=$id")
or die(mysql_error());
. . .
{
// get the 'id' value from the URL (if it exists), making sure that it is valid (checing that it is numeric/larger than 0)
if (isset($_GET['id']) && is_numeric($_GET['id']) && $_GET['id'] > 0)
{
// query db
$id = $_GET['id'];
$result = mysql_query("SELECT * FROM articles WHERE id=$id")
or die(mysql_error());
$row = mysql_fetch_array($result);
// check that the 'id' matches up with a row in the databse
if($row)
{
// get data from db
$articletitle = $row['articletitle'];
$articleorganization = $row['articleorganization'];
$articledate = $row['articledate'];
$articleurl = $row['articleurl'];
$articletags = $row['articletags'];
// show form
renderForm($id, $articletitle, $articleorganization, $articledate, $articleurl, $articletags, '');
}
. . .
?>
通常，表單中的複選框將與數據庫中的布爾值相關聯。從你的代碼看起來你正在嘗試使用關聯複選框和articletags字段。是對的嗎？ – mwotton
是的，這完全正確@mwotton。 – Zrb0529