如何在PHP中提交后禁用提交按钮？

Question

I browsed through the other questions on this issue but couldn't find a satisfactory answer. I have a quiz website where the user selects an option from four options and then clicks submit. I want to disable the submit button after it has been clicked once.

Is there any way to do this with PHP? If not, is there a way to do this with minimal JS.

Answer 1

very easy javascript only method

<form action="" method="post" >
<input type="submit" name="SUBMIT" value="Submit Form"
   onclick="this.disabled='disabled';this.form.submit();" />
</form>