Function call on Form Button Click

[grgisme]

Just simply trying to figure out how to pull this off. I am new to PHP and web design, and can't find anywhere on the internet how to have a PHP function run when the form "submit" button is clicked. Can anyone give me some tips?

[Houdini]

That is becuase you need to use a client side like javascript to do an onClick event, PHP is server side it doesn't know what is happening to the users browser.

[Shrike]

In PHP you can check the $POST array to see which button was clicked, and which fields were submitted along with the form.

<form...>
...
<input type="submit" name="submit">
</form>

if( isset( $_POST['submit'] ))
{
  echo 'Submit button was clicked';
}

It's not quite as simple as 'the submit button was clicked' though. As far as PHP is concerned, it read an HTTP POST request with a set of parameters, one of which was named submit.

It seems to me that you are thinking in terms of event driven programming, which is a feature of Javascript . There is a PHP framework called Prado which uses this technique.

[grgisme]

Alright guys, I think I finally get what you are driving at. Server side, not client side. Yo comprendo. I know how I'm going to pull it off for now: I'm going to have the submit button open another page, that simply writes to the file upon load and then redirrects, so it doesn't post the info until after they click the button. I need to learn more javascript evidently.

Yeah I tend to think in event driven programming, as I'm used to Java. Thanks for the help.

[FatalError]

grgisme wrote:

Alright guys, I think I finally get what you are driving at. Server side, not client side. Yo comprendo. I know how I'm going to pull it off for now: I'm going to have the submit button open another page, that simply writes to the file upon load and then redirrects, so it doesn't post the info until after they click the button. I need to learn more javascript evidently.

Yeah I tend to think in event driven programming, as I'm used to Java. Thanks for the help.

I'd recommend AJAX, because it's instant (no need for another page to open) and it's more efficient. Google 'AJAX tutorial' or something, that's how I learned it.