PHP doesn't process the form

Question

I'm having a little problem here.
I have a form with a jQuery that disables the submit input when the form is submited.
The problem is: I use PHP to process the data when the input submit is clicked. But apparently the button is being disabled first, then PHP can not perform the processing. I need to find a way to prevent this, take a look in the code snippets:

<form class='send' action='{$_SERVER['PHP_SELF']}' method='post'>
    <!--Form data-->
    <input type='submit' name='finish' value='Send'/>
</form>

jQuery function to disable:

$('.send').on('submit', function()
{
    $(this).find('input[type="submit"]').prop("disabled", true);
});

And then the PHP code to process:

if(isset($_POST['finish']))
{
    //Do things
}

As I said, the PHP don't process the form because JS disabled the button to prevent multiple submitions. How to process PHP before disable the button? Thanks!

Answer 1

Since you are disabling the submit button it will not get send over to to server in the $_POST variable so your code doesn't work, as you have said.

Another way to do what you are looking for is to create a hidden HTML input

<input type="hidden" name="form">

Then when you check if the form is send, you will use

if(isset($_POST['form']))
{
    //Do things
}

Answer 2

You can solve it easily changing your submit button by a simple button:

<form class='send' action='{$_SERVER['PHP_SELF']}' method='post'>
    <!--Form data-->
    <input type='button' name='finish' value='Send'/>
</form>

$('input[name="finish"]', '.send').on('click', function(){
    $(this).prop('disabled', true);
    $('.send').submit();
});