我是PHP的新手。我知道我正在使用mysql *函数,但我将继续将它们用于此项目。我正在寻找有关如何根据插入我的数据库的复选框值显示视频的指导。我有14个复选框,分别命名为1,2,3,4,5等...(插入到eNISATID列中)。每个复选框的名称都会插入我的'eNISATID'(来自enisatanswer)列(1-14),以及值1或0进入'eNISAT_watch',具体取决于是否选中了复选框。
我的第一段代码工作正常并插入到我的数据库中。具体如下:
<?php
session_start();
include_once 'dbconnect.php';
if(!isset($_SESSION['user']))
{
header("Location: index.php");
}
$res=mysql_query("SELECT * FROM users WHERE user_id=".$_SESSION['user']);
$userRow=mysql_fetch_array($res);
if(isset($_POST['submit']))
{
header("Location: eNISATVids.php");
$userID=$_SESSION['user'];
$cb_names = array('1', '2', '3', '4', '5', '6', '7', '8', '9', '10', '11', '12', '13', '14');
foreach ($cb_names as $cb) {
$cb_val = isset($_POST['$cb']) ? 1 : 0;
$sql = "INSERT INTO enisatanswer (user_id, eNISATID, eNISAT_watch) VALUES ('$userID', '$cb', $cb_val)";
mysql_query($sql) or die(mysql_error());
}
if($query==true)
{
echo'<script>alert("Your choices have inserted Successfully \n \n Please click on Display eNISAT Tutorials at the buttom of the page to view your videos ")</script>';
}
else
{
echo'<script>alert("Failed To Insert")</script>';
}
}
?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Welcome - <?php echo $userRow['username']; ?></title>
/<link rel="stylesheet" href="style.css" type="text/css" />
</head>
<body>
<div id="header">
<div id="left">
<label>NHSCT eNISAT Tutorials</label>
</div>
<div id="right">
<div id="content">
Welcome <?php echo $userRow['forename']; ?> <a href="logout.php?logout">Sign Out</a>
</div>
</div>
</div>
<br>
<p align="center"><img src="title.jpeg" width="400"height="100" alt="title.jpeg">
<br>
<br>
<center>
<h2>Please select the tasks you require assistance with, before clicking DISPLAY ENISAT TUTORIALS:<h2>
<br>
<table align="center" height="0" width="70%" border="1" bgcolor = "white">
<form action="" method="post"
<tr>
<td colspan="2">Tick each relevant box:</td>
</tr>
<tr>
<td>How to login</td>
<td><input type="checkbox" name="1" value="1"></td>
<tr>
<td>How to manage your worktray</td>
<td><input type="checkbox" name="2" value="1"></td>
<tr>
<td>How to change your visual settings (Colours and text size)</td>
<td><input type="checkbox" name="3" value="1"></td>
</tr>
<tr>
<td>How to change your own password on the system</td>
<td><input type="checkbox" name="4" value="1"></td>
</tr>
<tr>
<td>How to logout of the system</td>
<td><input type="checkbox" name="5" value="1"></td>
</tr>
<tr>
<td>How to search for a client on the system</td>
<td><input type="checkbox" name="6" value="1"></td>
</tr>
<tr>
<td>How to start an assessment</td>
<td><input type="checkbox" name="7" value="1"></td>
</tr>
<tr>
<td>How to finalise an assessment</td>
<td><input type="checkbox" name="8" value="1"></td>
<tr>
<td>How to print an assessment</td>
<td><input type="checkbox" name="9" value="1"></td>
</tr>
<tr>
<td>How to create a client and referral manually through Find on H+C</td>
<td><input type="checkbox" name="10" value="1"></td>
</tr>
<tr>
<td>How to submit a referral from LCID (LCID Users only)</td>
<td><input type="checkbox" name="11" value="1"></td>
</tr>
<tr>
<td>How to submit a referral from Soscare (Soscare Users only)</td>
<td><input type="checkbox" name="12" value="1"></td>
</tr>
<tr>
<td>How to reassign a referral on eNISAT</td>
<td><input type="checkbox" name="13" value="1"></td>
</tr>
<tr>
<td>How to close a referral on eNISAT</td>
<td><input type="checkbox" name="14" value="1"></td>
</tr>
<tr>
<td <td><button name="submit" type="submit" onclick="window.location.href='eNISATVids.php'">Display eNISAT Tutorials</button></td>
</tr>
</table>
</div>
</form>
</body>
</html>
任何人都可以帮助我完成我的第二段代码。我已将eNISATID(来自enisatanswer的复选框名称)与eNISATID(来自enisatquestion的PRIMARY KEY以唯一标识视频的行)匹配为外键。
我的复选框响应表格具有以下结构:
eNISATanswersID
(自动增量)eNISATID
(我希望这是我的复选框的名称,1-14)eNISAT_watch
(取决于是否选中了复选框,值为1或0)我的视频表格表具有以下结构:
- 'eNISATID'(主键 - 值1-14) -'NNISATQuestion'(在我的href上形成措辞的文字) -'NNISATVideo'(存储在我服务器上的视频的URL)
**当我使用简单的查询显示我桌面上的所有视频时,它们显示正常,但我希望仅显示与所选复选框相关的视频,具体取决于登录用户的user_id。我觉得我的SELECT查询是个问题,任何人都可以提出建议。
这是我的代码,根据插入的复选框值,从我的enisatquestion表中显示我的视频。我已尝试过两个不同的查询,如图所示。一个用//注释掉。 **
<?php
session_start();
include_once 'dbconnect.php';
if( !isset( $_SESSION['user'] ) ) header("Location: index.php");
$res=mysql_query("SELECT * FROM users WHERE user_id=".$_SESSION['user']);
$userRow=mysql_fetch_array( $res );
$userID=$_SESSION['user'];
$query = "SELECT eNISATQuestion, eNISATVideo FROM enisatquestion INNER JOIN enisatanswer WHERE enisatanswer.eNISATID = enisatquestion.eNISATID AND user_id = $userID AND eNISAT_watch = 1";
/* A default message if the query fails or there are no records */
$enisatquestion='<h2>Sorry, there are no records</h2>';
if( $result ) {/* if there is a recordset, proceed and generate html table */
$enisatquestion = "<table >";
while ( $row = mysql_fetch_assoc($result) ) {
$enisatquestion .= "<tr><td><a href='{$row['eNISATVideo']}'>{$row['eNISATQuestion']}</a></td></tr>";
}
$enisatquestion .= "</table>";
}
?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Welcome - <?php echo $userRow['username']; ?></title>
<link rel="stylesheet" href="style.css" type="text/css" />
</head>
<body>
<div id="header">
<div id="left">
<label>NHSCT eNISAT Tutorials</label>
</div>
<div id="right">
<div id="content">
Welcome <?php echo $userRow['forename']; ?> <a href="home.php?home">Return to Homepage</a> <a href="logout.php?logout">Sign Out</a>
</div>
</div>
<br>
<br>
<br>
<br>
<p align="center"><img src="title.jpeg" width="400"height="100" alt="title.jpeg">
<br>
<br>
<center>
<h2>Click on the each link to open your tutorial in Windows Media Player<h2>
<br>
<?php
/* output the html table here, below your header */
echo $enisatquestion;
/*
If the query failed then the default gets displayed
*/
?>
</div>
</body>
</html>
答案 0 :(得分:0)
如果您发布使用第一个SQL查询运行代码时发生的情况(第二个看起来无效,并且缺少任何JOIN子句),那将非常有用。
为确保代码中没有任何内容出错,请始终首先针对数据库本身直接运行 SQL查询(“硬编码”任何动态的,基于表单的数据来模拟实际的,用户生成的查询)。
如果您使用的是OS / X或Linux,那么使用mysql客户端运行查询将很快告诉您查询本身是否有问题。否则使用phpMyAdmin(或任何其他基于GUI的工具)来实现同样的目的。
数据库返回您期望的数据后,修改您的PHP代码以生成正确的SQL查询,并从那里开始工作。
答案 1 :(得分:0)
我得到了它的工作,我得到的错误来自我的查询中的SESSION变量。我使用了我的初始查询并更新如下:
$query = "SELECT eNISATQuestion, eNISATVideo FROM enisatquestion INNER JOIN enisatanswer WHERE enisatanswer.eNISATID = enisatquestion.eNISATID AND user_id = $userID AND eNISAT_watch = 1";