我有一个搜索框,可以在表格中显示搜索结果。搜索框使用简单的搜索查询从数据库中获取数据。
下面的是搜索框的代码
<form id="search-form" mmethod="post" action="search.php">
<input name="searcher" id="search-bar" type="search" placeholder="Type to Search">
<input id="search-button" type="submit" value="Find">
</form
PHP:
$host="localhost"; // Host name
$username="root"; // Mysql username
$password=""; // Mysql password
$db_name="datacentre"; // Database name
$tbl_name="data_centre_users"; // Table name
$server_name="localhost";
if(isset($_POST['submit'])) {
$searchword = $_POST['seacher'];
// Create connection
$con = new mysqli($server_name, $username, $password, $db_name , 3306);
if ($con->connect_error) {
die("Connection failed: " . $con->connect_error);
}
// Retrieve data from database
$sql="SELECT * FROM $tbl_name WHERE first_name='$searchword' OR last_name='$searchword' ";
$result = $con->query($sql);
$rows = $result->fetch_assoc();
?>
<section id="sidebar">
</section>
<section id="content">
<div id="scroll-table">
<table >
<caption>
Search Results
</caption>
<tr>
<th class="center"><strong>ID</strong></th>
<th class="center"><strong>FirstName</strong></th>
<th class="center"><strong>Lastname</strong></th>
<th class="center"><strong>Request</strong></th>
<th class="center"><strong>Purpose</strong></th>
<th class="center"><strong>Description</strong></th>
<th class="center"><strong>Booking Time</strong></th>
<th class="center"><strong>Access Time</strong></th>
<th class="center"><strong>Exit Time</strong></th>
<th class="center"><strong>Approved</strong></th>
<th class="center"><strong>Approved By</strong></th>
<th class="center"><strong>Update</strong></th>
</tr>
<?php
if($result->num_rows > 0){
// output data of each row
while($rows = $result->fetch_assoc()){ ?>
<tr>
<td class="center"><?php echo $rows['id']; ?></td>
<td class="center"><?php echo $rows['fisrt_name']; ?></td>
<td class="center"><?php echo $rows['last_name']; ?></td>
<td class="center"><?php echo $rows['request']; ?></td>
<td class="center"><?php echo $rows['purpose']; ?></td>
<td class="center"><?php echo $rows['description']; ?></td>
<td class="center"><?php echo $rows['booking_time']; ?></td>
<td class="center"><?php echo $rows['access_time']; ?></td>
<td class="center"><?php echo $rows['exit_time']; ?></td>
<td class="center"><?php echo $rows['approved']; ?></td>
<td class="center"><?php echo $rows['approved_by']; ?></td>
<td class="center" ><a href="update.php?id=<?php echo $rows['id']; ?>">update</a></td>
</tr>
<?php
}
}
?>
</table>
</div>
</section>
<
<aside></aside>
<?php
$con->close();
}
include('footer.php');
?>
当我运行代码时,显示的页面为空。
答案 0 :(得分:1)
查看以下内容:
<form id="search-form" mmethod="post" action="search.php">
应该是:
<form id="search-form" method="post" action="search.php">
你需要逃脱它。现在你的方式是对SQL注入
$searchword = $_POST['seacher'];
如下所示。另请注意错误:$_POST
$searchword = $con->real_escape_string( $_POST['searcher'] );
在表和列名称周围添加(``)反引号以防止“mysql保留字错误”
// Retrieve data from database
$sql="SELECT * FROM `$tbl_name` WHERE `first_name` = '$searchword' OR `last_name` = '$searchword' ";
删除第一次获取,因为它会干扰其他
$rows = $result->fetch_assoc();
把它放在你的桌子前面
while($rows = $result->fetch_assoc()){
请注意表格中的错误
<td class="center"><?php echo $rows['first_name']; ?></td> <!-- ['fisrt_name'] -->
为了你的
if($result->num_rows > 0){
您可以添加以下内容:
} else {
echo 'Nothing found';
}
答案 1 :(得分:0)
在HTML中,输入必须具有您要发布的名称。
<form id="search-form" method="post" action="search.php"> //spelling correction as you have type mistake mmethod
<input name="searcher" id="search-bar" type="text" placeholder="Type to Search">
<input id="search-button" type="submit" name="submit" value="Find">
</form>
并在您的PHP中确保您发布;
if(isset($_POST['submit']) && $_POST['submit']=="Find"){
尝试这样;
$sql="SELECT * FROM '$tbl_name' WHERE first_name='$searchword' OR last_name='$searchword' ";
OR
$sql="SELECT * FROM $tbl_name WHERE first_name='$searchword' OR last_name='$searchword' ";
和
// Retrieve data from database
$sql="SELECT * FROM $tbl_name WHERE first_name='$searchword' OR last_name='$searchword' ";
$result = $con->query($sql);
$rows = $result->fetch_assoc(); //Remove this you don't need it
?>
因为以后你在这里运行一个循环
<?php
if($result->num_rows > 0){
// output data of each row
while($rows = $result->fetch_assoc()){ ?>
答案 2 :(得分:0)
首先修复您的表单: 方法=&#34;后&#34; - 不是mmethod;类型=&#34;文本&#34; - 不是类型=&#34;搜索&#34 ;; &LT; /形式&GT; - 不是&lt; / form
<form id="search-form" method="post" action="search.php">
<input name="searcher" id="search-bar" type="text" placeholder="Type to Search">
<input id="search-button" type="submit" value="Find">
</form>
其次改变:
if (isset($_POST['searcher'])) { // changed from submit
第三个处理查询中的任何错误:
if (($result = $con->query($sql)) === false) {
die("error: ".$con->error); // todo: improve error handling
}
第四条删除此行:
$rows = $result->fetch_assoc();
最后,为了我的理智,请删除这一行(你真的不需要它):
if($result->num_rows > 0){
和它的匹配:
}
并且甚至不让我开始在SQL注入的情况下逃避用户输入!
祝你好运,我希望你能跑步答案 3 :(得分:0)
您在代码中使用了stack
这一行两次,因此您的查询只有1个结果,然后1个结果出现在第一个语句中,然后当您尝试第二次在表格的html之前使用时,您什么也得不到。< / p>