Question

我正在构建此网站，人们可以在其中添加活动到日历。我创建了一个将数据放入我的数据库的表单，但现在我想知道如何从数据库中获取数据的魔力！由于我刚开始将这个项目作为学校作业，我在混合PHP和HTML方面有点困难。我希望我做对了;

<?php
include("template.php");

$servername = "servername";
$username = "username";
$password = "password";
$dbname = "dbname";

// Create connection
$conn = new mysqli($servername, $username, $password, $dbname);
// Check connection
if ($conn->connect_error) {
    die("Connection failed: " . $conn->connect_error);
} 

?>

<body>
<div class="outer">
    <h2> Beheerderspagina </h2>
    <hr>

<?php
$sql = "SELECT name, organisator, begin, end, location, province, price, sort, website, description FROM events";
$result = $conn->query($sql);

if ($result->num_rows > 0); 
    while($row = $result->fetch_assoc());
        echo <<<HTML
            <div class="add">
                <div class="block">
                    <div class="photo">
                        <img src="geen_foto_beschikbaar.jpg" width="250px" height="250px">
                    </div>
                    <div class="text">
                        <div class="links">
                            <p> 
                            Naam:<br>Organisator:<br>Datum:<br>Locatie:<br>Provincie/land:<br>Gemiddelde prijs:<br>Genre:<br>Website:<br>Omschrijving </p>
                        </div>
                        <div class="rechts">        
HTML;
                            echo "<br>".$row["name"]."<br>".$row["organisator"]. "<br>". $row["begin"]. " tot ". $row["end"]. "<br>". $row["location"]. "<br>". $row["province"]. "<br>". $row["price"]. "<br>". $row["sort"]. "<br>". $row["website"]. "<br>". $row["description"]. "<br>";
    echo <<<HTML
                    </div>
                </div>
            </div>
        </div>
HTML;
?>

所以这是代码，但它不起作用。问题是，它没有显示我的数据。显示“tot”这个词，但其余的只是空的。如何循环数据并在div中每行显示它？

Answer 1

while($row = $result->fetch_assoc());

此处不需要;，而是使用{}包装代码。像这样：

   while($row = $result->fetch_assoc()){
        echo <<<HTML
            <div class="add">
                <div class="block">
                    <div class="photo">
                        <img src="geen_foto_beschikbaar.jpg" width="250px" height="250px">
                    </div>
                    <div class="text">
                        <div class="links">
                            <p> 
                            Naam:<br>Organisator:<br>Datum:<br>Locatie:<br>Provincie/land:<br>Gemiddelde prijs:<br>Genre:<br>Website:<br>Omschrijving </p>
                        </div>
                        <div class="rechts">        
HTML;
                            echo "<br>".$row["name"]."<br>".$row["organisator"]. "<br>". $row["begin"]. " tot ". $row["end"]. "<br>". $row["location"]. "<br>". $row["province"]. "<br>". $row["price"]. "<br>". $row["sort"]. "<br>". $row["website"]. "<br>". $row["description"]. "<br>";
    echo <<<HTML
                    </div>
                </div>
            </div>
        </div>
HTML;}

与if声明相同。

Answer 2

将您的循环更新为以下

<?php
$sql = "SELECT name, organisator, begin, end, location, province, price, sort, website, description FROM events";
$result = $conn->query($sql);

if ($result->num_rows > 0){
    while($row = $result->fetch_assoc()){
?>
            <div class="add">
                <div class="block">
                    <div class="photo">
                        <img src="geen_foto_beschikbaar.jpg" width="250px" height="250px">
                    </div>
                    <div class="text">
                        <div class="links">
                            <p> 
                            Naam:<br>Organisator:<br>Datum:<br>Locatie:<br>Provincie/land:<br>Gemiddelde prijs:<br>Genre:<br>Website:<br>Omschrijving </p>
                        </div>
                        <div class="rechts">        
                            <br><?=$row["name"]?>
                            <br><?=$row["organisator"]?>
                            <br><?=$row["begin"]?> tot <?=$row["end"]?>
                            <br><?=$row["location"]?>
                            <br><?=$row["province"]?>
                            <br><?=$row["price"]?>
                            <br><?=$row["sort"]?>
                            <br><?=$row["website"]?>
                            <br><?=$row["description"]?><br>
                    </div>
                </div>
            </div>
        </div>
<?php
    }
}
?>

如何从SQL数据库中显示数据？

2 个答案: