为什么我的表单不能用php / html工作？ [关闭]

Question

im trying to pass a variable with a submit button and it doesn't work.

<FORM METHOD="LINK" ACTION=<?php echo "\"add_event.php?email=".$email."\""?>>
<INPUT TYPE="submit" VALUE="add event">
</FORM>

$email is fine in the page that's calling it.

http://localhost/aproject/add_event.php?

that is the url that's passed.

not

http://localhost/aproject/add_event.php?email=[e-mail]

as I want.

Any thoughts are appreciated.

edit:

the generated html is

<form method="LINK" action="add_event.php?email=[e-mail]">
<input type="submit" value="add event">
</form>

Answer 1

There is no such form method as LINK, so your form is using GET (the default).

When you submit a GET form, you will destroy any existing query string on the form action and replace it with one generated from the form data.

Use a hidden input to store your data instead.

<form action="add_event.php">
  <input type="hidden" name="email" value="<?php echo htmlspecialchars($email); ?>">
  <input type="submit" VALUE="add event">
</form>