PHP syntax and structure for radio button and its values

Radio box code:

<input
  type  = "radio"
  name  = "choice"
  value = "A" />Apples />

<input
 开发者_如何学JAVA type  = "radio"
  name  = "choice"
  value = "B" />Oranges<br />

$choice=array("A"=>1.00, "B"=>0.80);
echo $choice["A"]; // will give me the value of 1.00
echo $choice["B"]; // will give me the value of 0.80

Given the code snippet above, is there anything wrong in terms of either the HTML radio box, the array or the choices?

Nope, that looks perfectly fine.
Except for the random /> after your Apples text, but I suspect this is a typo?

You may also want to consider this. Probably what you are heading towards? :)

<?php
$choices = array("A"=>1.00, "B"=>0.80);
if(in_array($_REQUEST['choice'], array_keys($choices))) {
    echo $choices[$_REQUEST['choice']];
}
else {
    echo "Invalid choice received!";
}
?>

This would be the code that receives your radio choice. It makes sure the choice is valid and then prints it.

As far as i understood your question, PHP Code seems to be wrong. You have not specified an array in your html code which is done using [ ].

This is what you do in you php code to echo the selection of the radio:

echo $_REQUEST['choice'];

This will echo selected radio buttons value either A or B.

I'm not sure what are you trying to achieve, but there are several things that need your attention.

First of all, check the syntax of <input>: http://www.w3schools.com/html/html_forms.asp

So I'd change your html code to:

<form ... >
<input type="radio" name="choice" value="1.00" /> Apples
<br />
<input type="radio" name="choice" value="0.80" /> Oranges
</form> 

And on server side, after actually submitting the form, just look for $_POST[ "choice" ] for your desired value (1.00 or 0.80).