使用生成的按钮从数据库输出所有图像
自从我开始自学php，html和mysql以来已经有一个月了。我正在为我学校的某个学生组织建立一个简单的php网站。 首先，我已在这里搜索过，这就是我得到的：Delete button for each table row
这个问题对我来说是完全一样的，但我真的被困在这里。我想要的是我桌上的所有图片都会显示在我的页面中。列然后会有一个＆＃39;生成＆＃39;内部有查询的按钮。这不完全是我在代码中要做的事情，但这对我来说是理解所有过程的一个很好的开始。
以下是我在页面中的代码，其中所有这些都将发生： 注意：我正在使用twitter bootstrap。我不知道引导程序是如何工作的，但我只知道如何编辑基本的php，html，jquery，javascript，css。只是基础：）
<?php
include 'img2db_pdo.class.php';
require("common.php");
if(empty($_SESSION['user']))
{
header("Location: http://localhost/se/index.php");
die("Redirecting to login.php");
}
else
{
//This following codes are for checking the session in DB
$query = "
SELECT
id,
password,
emailAddress,
membership
FROM memberlist
WHERE
session = :var_val
";
$query_params = array(
':var_val' => 'True'
);
try
{
$stmt = $db->prepare($query);
$result = $stmt->execute($query_params);
}
catch(PDOException $ex)
{
die("Failed to run query: " . $ex->getMessage());
}
$row = $stmt->fetch();
if ( $row['membership'] == 'Officer' || $row['membership'] == 'Member' )
{
header("Location: http://localhost/memberdir/index.php");
}
}
?>
<!doctype html>
<html lang="en">
<head>
<meta charset = "UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Annyeong Tomasino</title>
<link rel="stylesheet" href="css/bootstrap.min.css">
<link href="custom.css" rel="stylesheet">
<link href="jumbotron.css" rel="stylesheet">
<link href="carousel.css" rel="stylesheet">
<link rel="stylesheet" href="css/pikaday.css">
</head>
<body>
<?php
if (isset($_GET['message'])){
$message2 = $_SESSION[$_GET['message']];
echo "<script type='text/javascript'>alert(message2);</script>";
}
?>
<div class="navbar navbar-inverse navbar-fixed-top" role="navigation">
<div class="container">
<div class="menubar">
<div class="navbar-header">
<button type="button" class="navbar-toggle" data-toggle="collapse" data-target=".navbar-collapse">
<span class="sr-only">Toggle navigation</span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</button>
<a class="navbar-brand" href="#"><font color="#ffffff">Annyeong Tomasino</font></a>
</div>
</div>
<div class="navbar-collapse collapse">
<ul class="nav navbar-nav">
<li class="active"><a href="index.php">Home</a></li>
<li class="dropdown">
<a href="#" class="dropdown-toggle" data-toggle="dropdown">Admin<b class="caret"></b></a>
<ul class="dropdown-menu">
<li><a href="#myModal" data-toggle="modal">Add a Member</a></li>
<li><a href="memberlist.php">Member List</a></li>
<li><a href="event.php">Create Event</a></li>
</ul>
</li>
<li> <a href="http://hellotomasino.weebly.com/">AT Website</a></li>
<li><a href="http://osa.ust.edu.ph/" target="_blank">Office for Student Affairs</a></li>
<form class="navbar-form navbar-right" role="form" name="form1" method="post" action="logout.php">
<button type="submit" class="btn btn-danger" name = "logout" >Log out</button>
</form>
</div><!--/.navbar-collapse -->
</div>
</div>
<!-- Main jumbotron for a primary marketing message or call to action -->
<div class="jumbotron">
<div class="container text-center">
<h2>Events List Page</h2>
<p>See all the events you have created.</p>
</div>
</div>
<!-- Marketing messaging and featurettes
================================================== -->
<!-- Wrap the rest of the page in another container to center all the content. -->
<div class="container marketing">
<!-- Three columns of text below the carousel -->
<div class="row text-center">
<div class="col-lg-4">
<p>
<?php
$query = "SELECT * FROM ImageTable WHERE ImageId = :id";
$query_params = array( ':id' => 1 );
$stmt = $db->prepare($query);
$result = $stmt->execute($query_params);
$row = $stmt->fetch();
$img = $row['ImageFile'];
echo '<img height="200" width="200" src="data:image/jpeg;base64,'.base64_encode( $img ).'"/>';
?>
</p>
</div>
<div class="row text-center">
<div class="col-lg-4">
<p>
<?php
$query = "SELECT * FROM ImageTable WHERE ImageId = :id";
$query_params = array( ':id' => 2 );
$stmt = $db->prepare($query);
$result = $stmt->execute($query_params);
$row = $stmt->fetch();
$img = $row['ImageFile'];
echo '<img height="200" width="200" src="data:image/jpeg;base64,'.base64_encode( $img ).'"/>';
?>
</p>
</div>
<div class="row text-center">
<div class="col-lg-4">
<p>
<?php
$query = "SELECT * FROM ImageTable WHERE ImageId = :id";
$query_params = array( ':id' => 3 );
$stmt = $db->prepare($query);
$result = $stmt->execute($query_params);
$row = $stmt->fetch();
$img = $row['ImageFile'];
echo '<img height="200" width="200" src="data:image/jpeg;base64,'.base64_encode( $img ).'"/>';
?>
</p>
</div>
</div>
</div> <!-- /container -->
<!-- Bootstrap core JavaScript
================================================== -->
<!-- Placed at the end of the document so the pages load faster -->
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<script src="../../dist/js/bootstrap.min.js"></script>
<script src="../../assets/js/docs.min.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.0/jquery.min.js"></script>
<script src="https://netdna.bootstrapcdn.com/bootstrap/3.1.1/js/bootstrap.min.js"></script>
<link rel="stylesheet" type="text/css" href="//netdna.bootstrapcdn.com/bootstrap/3.1.1/css/bootstrap.min.css">
</body>
</html>
这是我到目前为止的输出：
3 个答案:
答案 0 :(得分：0)
我将在这里解释一个非常简单的技巧：
- 你需要创建一个单独的页面，可以接受来自数据库的记录id，然后它可以进行MYSQL查询从数据库中删除该id，假设这个文件名为“process.php”
-
您需要为每个图片添加一个带href的链接，如下所示：
HREF = “process.php ID =：ID”
顺便说一下，我觉得你学习编码真的很棒，虽然你的代码需要很多好的练习，但这需要时间，不断滚动：）
答案 1 :(得分：0)
我以某种方式通过使用MANUAL输出lol设法显示所有图像。我认为这是手动的。 我计算了图像表中的行数。 将该计数用于我的while循环。
现在，我只需要一个按钮，我相信这对我来说是下一个重大挑战。哈哈。
<?php
include 'img2db_pdo.class.php';
require("common.php");
if(empty($_SESSION['user']))
{
header("Location: http://localhost/se/index.php");
die("Redirecting to login.php");
}
else
{
//This following codes are for checking the session in DB
$query = "
SELECT
id,
password,
emailAddress,
membership
FROM memberlist
WHERE
session = :var_val
";
$query_params = array(
':var_val' => 'True'
);
try
{
$stmt = $db->prepare($query);
$result = $stmt->execute($query_params);
}
catch(PDOException $ex)
{
die("Failed to run query: " . $ex->getMessage());
}
$row = $stmt->fetch();
if ( $row['membership'] == 'Officer' || $row['membership'] == 'Member' )
{
header("Location: http://localhost/memberdir/index.php");
}
}
?>
<!doctype html>
<html lang="en">
<head>
<meta charset = "UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Annyeong Tomasino</title>
<link rel="stylesheet" href="css/bootstrap.min.css">
<link href="custom.css" rel="stylesheet">
<link href="jumbotron.css" rel="stylesheet">
<link href="carousel.css" rel="stylesheet">
<link rel="stylesheet" href="css/pikaday.css">
</head>
<body>
<style>
th.padding {
padding-right: 300px;
padding-left: 300px;
}
td.padding {
padding-right: 300px;
padding-left: 300px;
}
</style>
<?php
if (isset($_GET['message'])){
$message2 = $_SESSION[$_GET['message']];
echo "<script type='text/javascript'>alert(message2);</script>";
}
?>
<div class="navbar navbar-inverse navbar-fixed-top" role="navigation">
<div class="container">
<div class="menubar">
<div class="navbar-header">
<button type="button" class="navbar-toggle" data-toggle="collapse" data-target=".navbar-collapse">
<span class="sr-only">Toggle navigation</span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</button>
<a class="navbar-brand" href="#"><font color="#ffffff">Annyeong Tomasino</font></a>
</div>
</div>
<div class="navbar-collapse collapse">
<ul class="nav navbar-nav">
<li class="active"><a href="index.php">Home</a></li>
<li class="dropdown">
<a href="#" class="dropdown-toggle" data-toggle="dropdown">Admin<b class="caret"></b></a>
<ul class="dropdown-menu">
<li><a href="#myModal" data-toggle="modal">Add a Member</a></li>
<li><a href="memberlist.php">Member List</a></li>
<li><a href="event.php">Create Event</a></li>
</ul>
</li>
<li> <a href="http://hellotomasino.weebly.com/">AT Website</a></li>
<li><a href="http://osa.ust.edu.ph/" target="_blank">Office for Student Affairs</a></li>
<form class="navbar-form navbar-right" role="form" name="form1" method="post" action="logout.php">
<button type="submit" class="btn btn-danger" name = "logout" >Log out</button>
</form>
</div><!--/.navbar-collapse -->
</div>
</div>
<!-- Main jumbotron for a primary marketing message or call to action -->
<div class="jumbotron">
<div class="container text-center">
<h2>Events List Page</h2>
<p>See all the events you have created.</p>
</div>
</div>
<!-- Marketing messaging and featurettes
================================================== -->
<!-- Wrap the rest of the page in another container to center all the content. -->
<div class="container marketing">
<!-- Three columns of text below the carousel -->
<!-- LALALA
<div class="row text-center">
<div class="col-lg-4">
<p>
<?php
$query = "SELECT * FROM ImageTable WHERE ImageId = :id";
$query_params = array( ':id' => 1 );
$stmt = $db->prepare($query);
$result = $stmt->execute($query_params);
$row = $stmt->fetch();
$img = $row['ImageFile'];
echo '<img height="200" width="200" src="data:image/jpeg;base64,'.base64_encode( $img ).'"/>';
?>
</p>
</div>
</div>
-->
<?php
$query = "select count(ImageId) as count from ImageTable";
$query_params = array( );
$stmt = $db->prepare($query);
$result = $stmt->execute($query_params);
$row = $stmt->fetch();
$numOfRows = $row['count'];
//echo $row['count'];
$space = 0;
$inc = 0;
?>
<center>
<?php
while($numOfRows != 0)
{
if ( $space == 4)
{
$space = 0;
echo '<br><br><br><br><br><br><br><br>';
}
$inc++;
$query = "SELECT * FROM ImageTable WHERE ImageId = :id";
$query_params = array( 'id' => $inc);
$stmt = $db->prepare($query);
$result = $stmt->execute($query_params);
$row = $stmt->fetch();
$img = $row['ImageFile'];
echo '   '.'<img height="200" width="200" src="data:image/jpeg;base64,'.base64_encode( $img ).'"/>'.'   ';
$space++;
$numOfRows--;
}
?>
</center>
</div> <!-- /container -->
<!-- Bootstrap core JavaScript
================================================== -->
<!-- Placed at the end of the document so the pages load faster -->
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<script src="../../dist/js/bootstrap.min.js"></script>
<script src="../../assets/js/docs.min.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.0/jquery.min.js"></script>
<script src="https://netdna.bootstrapcdn.com/bootstrap/3.1.1/js/bootstrap.min.js"></script>
<link rel="stylesheet" type="text/css" href="//netdna.bootstrapcdn.com/bootstrap/3.1.1/css/bootstrap.min.css">
</body>
</html>
答案 2 :(得分：0)
你必须有一个重定向到php文件的按钮，该文件从数据库中删除特定的id ...
<button href="delete.php?id=imageid"></button>
你的delete.php页面应该是
<?php
//Execute the Query
$query = "DELETE FROM table WHERE id = '".$_GET['id']."' ";
$stmt = $db->prepare($query);
$result = $stmt->execute();
//Go back to the original page
@header('Location : home.php');
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