Javascript php未定义索引错误mysql css if语句_Javascript_Php_Html_Css_Mysql

Javascript php未定义索引错误mysql css if语句

javascript php html css mysql

Javascript php未定义索引错误mysql css if语句,javascript,php,html,css,mysql,Javascript,Php,Html,Css,Mysql,我正在使用php html和MySQL数据库编写一个web应用程序。我试图实现一个if，如果数据库中的那一行有一个特定的值，它将改变它的CSS显示方式。所以在我的数据库中有一些项目，如果一个项目已经完成（com=“yes”），它应该显示为绿色。在dbconnect.php中，我有以下内容： <?php session_start(); $username = ""; $email = ""; $projtitle = ""; $deadline = ""; $del1 = ""; $de

我正在使用php html和MySQL数据库编写一个web应用程序。我试图实现一个if，如果数据库中的那一行有一个特定的值，它将改变它的CSS显示方式。所以在我的数据库中有一些项目，如果一个项目已经完成（com=“yes”），它应该显示为绿色。在dbconnect.php中，我有以下内容：

<?php
session_start();

$username = "";
$email = "";
$projtitle = "";
$deadline = "";
$del1 = "";
$del2 = "";
$del3 = "";
$errors = array();

 //Connect to the database
    $db = mysqli_connect('localhost', 'root', '', 'hons');

//If the add project button is clicked
if(isset($_POST['addproj'])) {
    $projtitle = mysqli_real_escape_string($db, $_POST['projtitle']);
    $del1 = mysqli_real_escape_string($db, $_POST['del1']);
    $del2 = mysqli_real_escape_string($db, $_POST['del2']);
    $del3 = mysqli_real_escape_string($db, $_POST['del3']);
    $deadline = mysqli_real_escape_string($db, $_POST['deadline']);
    $colour = mysqli_real_escape_string($db, $_POST['colour']);

    //Insert into the database
        $sql = "INSERT INTO projects (title, del1, del2, del3, deadline)
                    VALUES ('$projtitle', '$del1', '$del2', '$del3', '$deadline')";
        mysqli_query($db, $sql);
};

//If the project complete button is clicked
    if(isset($_POST['projcom'])) {
        $com = yes;

        //Insert into database
        $sql = "INSERT INTO evals (com)
VALUES ('$com')";
        mysqli_query($db, $sql);
};

//If the project not complete button is clicked
if(isset($_POST['notcom'])) {
    $com = no;

    //Insert into database
    $sql = "INSERT INTO evals (com)
VALUES ('$com')";
    mysqli_query($db, $sql);
};

您需要在诸如com==“yes”
之类的引号中写“是”或“否”。在所有输入中使用mysqli\u real\u escape\u字符串很好，这表明您在避免SQL注入方面花了一些心思，但我仍然建议您花些时间学习如何使用准备好的语句。MySQLi支持预先准备好的语句，它们有很多好处。我还建议您对输入进行一些验证，并且对来自不受信任来源的数据提供超过1层的保护不会有任何伤害。您需要在文字周围加引号<代码>==yes

=='yes'

mysqli\u real\u escape\u字符串不使用默认字符集是不安全的。。查看手册->

<?php

session_start();

if(!isset($_SESSION['username'])){
    $_SESSION['msg'] = "You must log in first";
    header('location: index.php');
}
if(isset($_GET['logout'])){
    session_destroy();
    unset($_SESSION['username']);
    header("location: index.php");
}

?>

<?php include ('dbconnect.php') ?>

<!DOCTYPE html>
<html lang="en">
<head>

    <title>UPM</title>

    <meta charset="UTF-8">

    <meta name="viewport" content="width=device-width, initial-scale=1">
    <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
    <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>

    <style>

        .col-sm-4{
            display: inline-block;
            padding: 50px 50px;
            border-style: solid;
            border-width: 3px;
            border-radius: 5px;
            font-size: 16px;
        }

        .col-sm-4.completed{
            display: inline-block;
            padding: 50px 50px;
            border-style: solid;
            border-width: 3px;
            border-radius: 5px;
            font-size: 16px;
            border-color: green;
            font-color: green;
        }

        .col-sm-4.notcompleted{
            display: inline-block;
            padding: 50px 50px;
            border-style: solid;
            border-width: 3px;
            border-radius: 5px;
            font-size: 16px;
            font-color: red;
            border-color: red;
        }

        .jumbotron {
            background-color: #f4511e;
            color: #ffffff;
            padding: 100px 25px;

        }

        .bg-grey{
            background-color: #f6f6f6;
        }

        .container-fluid{
            padding: 60px 50px;
        }

        .logo {
            font-size: 200px;
        }

        @media screen and (max-width: 768px) {

            .col-sm-4 {
                text-align: center;
                margin: 25px 0;
            }

        }

        .navbar {
            margin-bottom: 0;
            background-color: #f4511e;
            z-index: 9999;
            border: 0;
            font-size: 12px !important;
            line-height: 1.42857143 !important;
            letter-spacing: 4px;
            border-radius: 0;
        }

        .navbar li a, .navbar .navbar-brand {
            color: #fff !important;
        }

        .navbar-nav li a:hover, .navbar-nav li.active a {
            color: #f4511e !important;
            background-color: #fff !important;
        }

        .navbar-default .navbar-toggle {
            border-color: transparent;
            color: #fff !important;

        }

    </style>
</head>



<body id="MyProjects" data-spy="scroll" data-target=".navbar" data-offset="60">



<nav class="navbar navbar-default navbar-fixed-top">

    <div class="container">

        <div class="navbar-header">

            <button type="button" class="navbar-toggle" data-toggle="collapse" data-target="#myNavbar">

                <span class="icon-bar"></span>

                <span class="icon-bar"></span>

                <span class="icon-bar"></span>

            </button>

            <a class="navbar-brand">

                <!-- logo not working-->

                <!-- <IMG SRC="images/UPMLogo.jpg" width="230px" height="158px">-->

            </a>

        </div>

        <div class="collapse navbar-collapse" id="myNavbar">

            <ul class="nav navbar-nav navbar-right">

                <li><a href="home.php">HOME</a></li>

                <li><a href="myprojects.php">MY PROJECTS</a></li>

                <li><a href="eval.php">EVALUATIONS</a></li>

                <li><a href="#pricing">MY STATS</a></li>

                <li><a href="hints.php">HINTS & TIPS</a></li>

                <li><a href="home.php?logout='1'">LOG OUT</a></li>

            </ul>

        </div>

    </div>

</nav>



<div class="jumbotron text-center">

    <h1 id =SiteTitle> Welcome to your MyProjects page! </h1>

    <h3>Here you will be able to enter all of your university projects along with their deliverable's and deadlines. You can mark your projects as successful or unsuccessful depending on whether you met the deadline.
        It is a great way to visually track all of your projects!</h3>

</div>


<div class=""container-fluid">

<p>
To get add a project click on the plus symbol. If a project is completed on time with all the deliverables' mark it with the tick! Otherwise click on the X.
</p>
</div>

<div class="container-fluid text-center bg-grey">
    <div class="row text-center">
        <div>
                <form method="post" action="myprojects.php">

                    <div class=""input-group>
                    Project Title :<br>
                    <input type="text" name="projtitle"><br>
                    </div>
                    <div class=""input-group>
                    Deliverable 1 :<br>
                    </div>
                    <div class=""input-group>
                    <input type="text" name="del1"><br>
                    Deliverable 2 :<br>
                    </div>
                    <div class=""input-group>
                    <input type="text" name="del2"><br>
                    </div>
                    <div class=""input-group>
                    Deliverable 3 :<br>
                    <input type="text" name="del3"><br>
                    </div>
                    <div class=""input-group>
                    Final Deadline Date: <br>
                    <input type="date" name="deadline"><br>
                    </div>
                    <div class=""input-group>
                    Choose a Colour: <br>
                    <input type="color" name="colour"><br><br>
                    </div>
                <button type="submit" class="btn" name="addproj">+</button>
                <p><strong>Click me, click me!</strong></p>
                </form>
            </div>
        </form>
        </div>

    <!--Display projects-->
    <?php
    $sql = "SELECT * FROM projects";
    $result = mysqli_query($db, $sql);
    while ($row = mysqli_fetch_array($result)){
        //if com is equal to yes then else the normal echo
        if($row['com'] == yes){
            echo "<div id='projcompleted' class='col-sm-4.completed'>";
            echo "<p>" . $row['title'] . "</p>";
            echo "<p>Deliverables: </p>";
            echo "<p>" . $row['del1'] . "</p>";
            echo "<p>" . $row['del2'] . "</p>";
            echo "<p>" . $row['del3'] . "</p>";
            echo "<p>Deadline date:</p>";
            echo "<p>" . $row['deadline'] . "</p>";
            echo "<p>Deadline met and project complete!</p>";
            echo "<button type=\"submit\" class=\"btn\" name=\"projcom\">√</button> <button type=\"submit\" class=\"btn\" name=\"notcom\">X</button>";
            echo "</div>";
        }
        elseif ($row['com'] == no){
            echo "<div id='projnotcom' class='col-sm-4.notcompleted'>";
            echo "<p>" . $row['title'] . "</p>";
            echo "<p>Deliverables: </p>";
            echo "<p>" . $row['del1'] . "</p>";
            echo "<p>" . $row['del2'] . "</p>";
            echo "<p>" . $row['del3'] . "</p>";
            echo "<p>Deadline date:</p>";
            echo "<p>" . $row['deadline'] . "</p>";
            echo "<p>Deadline missed/project incomplete! :(</p>";
            echo "<button type=\"submit\" class=\"btn\" name=\"projcom\">√</button> <button type=\"submit\" class=\"btn\" name=\"notcom\">X</button>";
            echo "</div>";
        }
        else {
            echo "<div id='proj' class='col-sm-4'>";
            echo "<p>" . $row['title'] . "</p>";
            echo "<p>Deliverables: </p>";
            echo "<p>" . $row['del1'] . "</p>";
            echo "<p>" . $row['del2'] . "</p>";
            echo "<p>" . $row['del3'] . "</p>";
            echo "<p>Deadline date:</p>";
            echo "<p>" . $row['deadline'] . "</p>";
            $target = strtotime($row['deadline']);
            $today = time();
            $difference = $target - $today;
            $days = (int)($difference / 86400);
            print $days;
            echo "<p>days until deadline</p>";
            echo "<button type=\"submit\" class=\"btn\" name=\"projcom\">√</button> <button type=\"submit\" class=\"btn\" name=\"notcom\">X</button>";
            echo "</div>";
        }
    }

    ?>


</body>

</html>