我的网页应用程序中有一个页面,我在<input type="search"
中输入了一些文本,我从下拉列表中选择,一种类型来完成我的搜索操作,然后当我点击搜索提交按钮时,网络应用程序转到MySQL并搜索行,然后在HTML表格中显示给我。
我有这个SQL代码,它放在我的HTML页面之上:
<?php
require_once('../include/global.php');
$result6 = 0;
$message = '';
if(isset($_POST['submit_search']))
{
$selected = $_POST['select_search_type'];
$search = $_POST['search_item'];
try
{
if($selected=="item_name")
{
$query = ("SELECT * FROM inventory WHERE item_name= :search");
$stmt6 = $conn->prepare($query);
$stmt6->bindParam(":search", $search);
$count6 = $stmt6->execute();
$result6 = $stmt6->fetch(PDO::FETCH_ASSOC);
}
if($selected=="item_cat")
{
$query = ("SELECT * FROM inventory WHERE item_cat= :search");
$stmt6 = $conn->prepare($query);
$stmt6->bindParam(":search", $search);
$count6 = $stmt6->execute();
$result6 = $stmt6->fetch(PDO::FETCH_ASSOC);
}
if($selected=="item_code")
{
$query = ("SELECT * FROM inventory WHERE item_code= :search");
$stmt6 = $conn->prepare($query);
$stmt6->bindParam(":search", $search);
$count6 = $stmt6->execute();
$result6 = $stmt6->fetch(PDO::FETCH_ASSOC);
}
}
catch(PDOException $e)
{
echo $e->getMessage();
}
}
?>
在网页HTML表单中,我有以下代码:
<form action="" method="post">
<input type="search" name="search_item"/>
<select id="selectW" name="select_search_type">
<option value="select_search">select</option>
<option value="item_name">product</option>
<option value="item_cat">category</option>
<option value="item_code">code</option>
</select>
<input type="submit" name="submit_search" value="search"/>
</form>
</div>
<div id="section2">
<form action="" method="post">
<table class="imagetable" border="1" cellspacing="2" cellpadding="2">
<tr>
<th align="center">product</th>
<th align="center">code</th>
<th align="center">price</th>
<th align="center">number</th>
</tr>
<?php foreach ($result6 as $show_search) { //var_dump($show_search);?>
<tr>
<td align="center"><?php echo $show_search['item_name'] ?></td>
<td align="center"><?php echo $show_search['item_code'] ?></td>
<td align="center"><?php echo $show_search['buy_price'] ?></td>
<td align="center"><?php echo $show_search['item_sold'] ?></td>
</tr>
<?php } ?>
</table>
</form>
现在,当我运行并测试我的页面时,第一个错误是:
警告:为foreach()提供的参数无效
所以我将result6 = 0;
更改为result6 = array();
。但我得到了同样的警告。
之后,当我在搜索文本框中输入名称时,提交搜索时出现此错误:
警告:非法字符串偏移&#39; item_code&#39;
警告:非法字符串偏移&#39; item_name&#39;
警告:非法字符串偏移&#39; buy_price&#39;
警告:非法字符串偏移&#39; item_sold&#39;
我尝试了这段代码in this link but still the same error
然后我看到this link here for the illegal offset,但它与我的代码无关(不值得测试,不同的代码)。
感谢任何帮助。
答案 0 :(得分:0)
请注意,你正在迭代[http://php.net/manual/es/pdostatement.fetch.php] fetch的结果,而不是整个结果集,这就是为什么你得到'非法字符串偏移'
删除'$ result6 = $ stmt6 ...'然后请迭代声明......
<?php foreach ($stmt6 as $show_search) { //var_dump($show_search);?>
<tr>
<td align="center"><?php echo $show_search['item_name'] ?></td>
<td align="center"><?php echo $show_search['item_code'] ?></td>
<td align="center"><?php echo $show_search['buy_price'] ?></td>
<td align="center"><?php echo $show_search['item_sold'] ?></td>
</tr>
<?php } ?>