如何使用php刷新页面时动态添加/删除表单

Question

如何使用PHP动态添加和删除表单在页面刷新时保留的输入字段？可以使用会话吗？请为此任何PHP脚本？提前谢谢!!

Answer 1

你可以使用这样的东西

<?php

$showEnterOther = "";
$showEnterOtherAsWell = "";

if(isset($_POST["show_form"])) {

    $showEnterOther = "<input type='text' name='whatever' />";
    $showEnterOtherAsWell = "<input type='text' name='whatever' />";

}

?>
<form action="#" method="post">
<input type="text" name="username" placeholder="Enter Username" value="<?php if(isset($_POST['username'])){echo $_POST['username'];} ?>"/>
<?php echo $showEnterOther; ?>
<?php echo $showEnterOtherAsWell; ?>
<input type="submit" name="show_form" value="Continue!" />
</form>