PHP推出HTML，更好的方式？

基本上这就是我所拥有的：

<form method="POST" action="model.php">
            <input type="hidden" name="from" value="edit">
            <?php
                include 'model.php';
                $contactID = $_POST['editConRad'];
                selectSingle($contactID);
                echo "<input type='hidden' name='contactID' value='$contactID'>";
                echo "<label>First Name:</label>";
                echo "<input type="text" name="fname">";
                echo "<label>Last Name:</label>";
                echo "<input type="text" name="lname">";
                echo "<label>Email:</label>";
                echo "<input type="email" name="email">";
                echo "<label>Street Address:</label>";
                echo "<input type="text" name="streetaddress">";
                echo "<label>City:</label>";
                echo "<input type="text" name="city">";
                echo "<label>Province:</label>";
                echo "<input type="text" name="province">";
                echo "<label>Postal Code:</label>";
                echo "<input type="text" name="postalcode">";
                echo "<label>Phone:</label>";
                echo "<input type="number" name="phone">";
                echo "<label>Date of Birth:</label>";
                echo "<input type="date" name="yob">";
                echo "<input type="submit" value="Submit Edit">";
            ?>
        </form>

只要添加适当的标记，就可以随时在PHP和HTML之间切换

例如：

<?php
echo "This is output from an echo statement<br>"
?>
This is plain old HTML<br>
<?php
echo "And now we're back to PHP<br>"


这是普通的旧HTML

我本以为这是回声
会导致错误吗？您可以关闭PHP标记，然后简单地创建HTML。HTML和PHP在脚本中是可以互换的。为什么不脱离PHP呢<代码>？>第二个示例中的所有HTML都没有像您预期的那样进行连接。您可以删除
s，因为它们将按原样输出。非主题：请注意在将$\u POST（
$\u POST['editConRad']
）放入字段之前对其进行清理，以避免XSS和其他安全问题。
<?php
echo "This is output from an echo statement<br>"
?>
This is plain old HTML<br>
<?php
echo "And now we're back to PHP<br>"

<form method="POST" action="model.php">
        <input type="hidden" name="from" value="edit">
        <?php
            // Do this bit in PHP
            include 'model.php';
            $contactID = $_POST['editConRad'];
            selectSingle($contactID);
        ?>
            <!-- Now switch back to HTML -->
            <!-- PHP variable embedded here-------------|................| -->
            <input type='hidden' name='contactID' value='<?= $contactID?>'>";
            <label>First Name:</label>
            <input type="text" name="fname">
            <label>Last Name:</label>";
            <input type="text" name="lname">
            <label>Email:</label>
            <input type="email" name="email">

            <!-- and so on -->
         
    </form>

<?php
// You can store long text strings in HEREDOC or NOWDOC syntax
$longString = <<<'EOT'
    This is an arbitrarily long string, but this one is only short<br>
EOT
echo $longString;