PHP代码：语法错误，意外的文件结尾[重复]

Question

<?php
require_once('template.php');
include ('login.php');
$content = '<h1>Products</h1>';
$query   = <<<END
SELECT * FROM products
ORDER BY created_at DESC
END;
$res     = $mysqli->query($query);

if (isset($_SESSION['userId']) and ($res->num_rows > 0)) {
    while ($row = $res->fetch_object()) {
        $content .= <<<END
        {$row->name} |
            {$row->price}<br>
            <a href="product_details.php?id={$row->id}">Description</a>| 
            <a href="delete_product.php?id={$row->id}" onclick="return confirm('Are you sure?')"> 
            Remove product</a>|
            <a href="edit_product.php?id={$row->id}">Edit product</a><br>
            </hr>
END;
    }
} 
elseif (($res->num_rows > 0)) {
    while ($row = $res->fetch_object()) {
        $content .= <<<END
            {$row->name}|
                {$row->price}<br>
                <a href="product_details.php?id={$row->id}">Description</a><br>
END; 
    }
}
echo $navigation;
echo $content;
?>

Answer 1

在HEREDOC标记结尾后添加了空格。

第30行：

END; 

应仅为（分号后无空格）：

END;