PHP $_POST not working? [duplicate]

Answer 1

try doing var_dump($_GLOBALS).

A potential cause could be that there is a script running before yours which unsets the global variables. Such as:

unset($_REQUEST);

or even.

unset($GLOBALS);

This could be done via the auto_prepend_file option in the php.ini configuration.

Answer 2

Dump the global variable to find out what you have in the page scope:

var_dump($GLOBALS);

This will tell you the "what" and "where" regarding the data on your page.

Answer 3

1. html file and php file both should reside in htdocs folder in c:\apache2 (if you use apache web server).
2. Open html file by typing http://"localhost/html_file_name.html"
3. Now enter Your data in fields.. Your code will run..

Answer 4

I had something similar this evening which was driving me batty. Submitting a form was giving me the values in $_REQUEST but not in $_POST.

Eventually I noticed that there were actually two requests going through on the network tab in firebug; first a POST with a 301 response, then a GET with a 200 response.

Hunting about the interwebs it sounded like most people thought this was to do with mod_rewrite causing the POST request to redirect and thus change to a GET.

In my case it wasn't mod_rewrite to blame, it was something far simpler... my URL for the POST also contained a GET query string which was starting without a trailing slash on the URL. It was this causing apache to redirect.

Spot the difference...

Bad: http://blah.de.blah/my/path?key=value&otherkey=othervalue
Good: http://blah.de.blah/my/path/?key=value&otherkey=othervalue

The bottom one doesn't cause a redirect and gives me $_POST!

Answer 5

try this
html code

  <form action="<?php echo $_SERVER['PHP_SELF']; ?>" method="post">
          <input type="text" name="firstname">
          <input type="submit" name="submit" value="Submit">
        </form>

php code:

if(isset($_POST['Submit'])){
$firstname=isset($_POST['firstname'])?$_post['firstname']:"";
echo $firstname;

}

Answer 6

Instead of using $_POST, use $_REQUEST:

HTML:

<form action="" method="post">
  <input type="text" name="firstname">
  <input type="submit" name="submit" value="Submit">
</form>

PHP:

if(isset($_REQUEST['submit'])){
  $test = $_REQUEST['firstname'];
  echo $test;
}