PHP里面的PHP里面的PHP

Question

我该怎么做呢？

<?php
if (isset ($_SESSION['ID'])) {
    echo " 
         <form action = 'updateacct.php' method = 'POST'>
              Email: 
                    <input type = 'text' name = 'eml' value = '" . echo $_SESSION['ID'] . "' placeholder = 'Email' size = '30' required/>
         </form>

?>

我试图从会话中提取var并将其放在表单值中,但无法弄清楚如何执行此操作.

Answer 1

不建议用PHP回显你的整个html ...你可以这样做:

<?php if(isset($_SESSION['ID'])): ?>
    <form action='updateacct.php' method='POST'>
        Email: <input type='text' name='eml' value='<?php echo $_SESSION['id']; ?>' placeholder='Email' size='30' required/>
    </form>
<?php endif; ?>