PHP 在提交时验证表单

Question

I have a form and in the page I have to validate if values are posted. But when I print the post array I am getting Array ( ) outside the if condition. When I try to use print_r() inside the if condition, it is not working. The code I am using is below:

<?php
print_r($_POST);
if (isset($_POST['submit'])) {
  print_r($_POST); // Not Working
}
?>
<form method="post" action="anotherpage.php">
<input type="text" name="course" />
<input type="text" name="location" />
<input type="submit" name="submit"  value="GO"/>
</form>

I also tried using a hidden input inside the form and post it. It is also not working.

Answer 1

Your form is POSTing to anotherpage.php , not to the same page.

You can either change your <form> to post to the same page:

<form method="post">
...
</form>

Or put your PHP code in anotherpage.php :

<?php
print_r($_POST);
if (isset($_POST['submit'])) {
  print_r($_POST);
}
?>