未定义索引错误 PHP [英] Undefined index error PHP
问题描述
我是 PHP 新手,但出现此错误:
I'm new in PHP and I'm getting this error:
注意:未定义索引:productid在/var/www/test/modifyform.php上第 32 行
Notice: Undefined index: productid in /var/www/test/modifyform.php on line 32
注意:未定义索引:名称在/var/www/test/modifyform.php上线33
Notice: Undefined index: name in /var/www/test/modifyform.php on line 33
注意:未定义索引:价格在/var/www/test/modifyform.php在线34
Notice: Undefined index: price in /var/www/test/modifyform.php on line 34
注意:未定义索引:描述在/var/www/test/modifyform.php第 35 行
Notice: Undefined index: description in /var/www/test/modifyform.php on line 35
我在网上找不到任何解决方案,所以也许有人可以帮助我.
I couldn't find any solution online, so maybe someone can help me.
代码如下:
<form action="<?php echo $_SERVER['PHP_SELF'];?>" method="POST">
<input type="hidden" name="rowID" value="<?php echo $rowID;?>">
<p>
Product ID:<br />
<input type="text" name="productid" size="8" maxlength="8" value="<?php echo $productid;?>" />
</p>
<p>
Name:<br />
<input type="text" name="name" size="25" maxlength="25" value="<?php echo $name;?>" />
</p>
<p>
Price:<br />
<input type="text" name="price" size="6" maxlength="6" value="<?php echo $price;?>" />
</p>
<p>
Description:<br />
<textarea name="description" rows="5" cols="30">
<?php echo $description;?></textarea>
</p>
<p>
<input type="submit" name="submit" value="Submit!" />
</p>
</form>
<?php
if (isset($_POST['submit'])) {
$rowID = $_POST['rowID'];
$productid = $_POST['productid']; //this is line 32 and so on...
$name = $_POST['name'];
$price = $_POST['price'];
$description = $_POST['description'];
}
在那之后我做的(或者至少我正在尝试)是更新 MySQL 中的一个表.我真的不明白为什么定义了 $rowID
而其他变量没有.
What I do after that (or at least I'm trying) is to update a table in MySQL.
I really can't understand why $rowID
is defined while the other variables aren't.
感谢您花时间回答我.干杯!
Thank you for taking your time to answer me. Cheers!
推荐答案
尝试:
<?php
if (isset($_POST['name'])) {
$name = $_POST['name'];
}
if (isset($_POST['price'])) {
$price = $_POST['price'];
}
if (isset($_POST['description'])) {
$description = $_POST['description'];
}
?>
这篇关于未定义索引错误 PHP的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!