Change a button after e-mail

I have a page with a button that sends an e-mail with the data on the page.  The page that sends the e-mail just returns to the original page.  How do I alert the user that they sent the e-mail (grey out or something else).  Should I set a $_SESSION var?
breeze351Asked:
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Ray PaseurCommented:
Yes, a session variable is appropriate for this.
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Julian HansenCommented:
There are a couple of options - firstly if the page that processes the click is the same as the page that renders the form then simply gray out the button on the render of the page - you will know that you have sent the email so you can use that to build the logic around rendering out a grayed out button.

Option 2 - send the request by AJAX and gray out the button with JavaScript
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breeze351Author Commented:
Got it. Thought that there might be an easier way.
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Julian HansenCommented:
In my view AJAX is the easiest option - your backend script only needs logic for sending mail and returning status - no need for rendering an interface. The client script is also very easy - a single AJAX call with a status check in the callback.
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