javascript - How do I post button value to PHP?

Question

I want use A-Z buttons on a html page like shown below (only sample and few words)

<INPUT TYPE="BUTTON" VALUE=" A " ONCLICK="A">
<INPUT TYPE="BUTTON" VALUE=" B " ONCLICK="B">
<INPUT TYPE="BUTTON" VALUE=" C " ONCLICK="C">
<INPUT TYPE="BUTTON" VALUE=" D " ONCLICK="D">
<INPUT TYPE="BUTTON" VALUE=" E " ONCLICK="E">
<INPUT TYPE="BUTTON" VALUE=" F " ONCLICK="F">
<INPUT TYPE="BUTTON" VALUE=" G " ONCLICK="G">
<INPUT TYPE="BUTTON" VALUE=" H " ONCLICK="H">
<INPUT TYPE="BUTTON" VALUE=" I " ONCLICK="I">
<INPUT TYPE="BUTTON" VALUE=" J " ONCLICK="J">

when I click on each button I want to post respective values on button to a PHP variable.

How can I do this?

Answer 1

Change the type to submit and give it a name (and remove the useless onclick and flat out the 90's style uppercased tags/attributes).

<input type="submit" name="foo" value="A" />
<input type="submit" name="foo" value="B" />
...

The value will be available by $_POST['foo'] (if the parent <form> has a method="post").