multiple choice with radio buttons?

[webguync]

In this form, I am using radio buttons to select various PHP math function results (total, average,both) and it works but was wondering if it is possible to make it multiple choice, that is to say instead of displaying one result at t time when you submit, displaying two or three of the results, depending on how many radio buttons are clicked. Can this be done?

 

Here is the form code

 

<form action="." method="post">
        <input type="hidden" name="action" value="process_scores" />

        <label>Score 1:</label>
        <input type="text" name="scores[]" 
               value="<?php  echo $scores[0]; ?>"/><br />

        <label>Score 2:</label>
        <input type="text" name="scores[]"
               value="<?php  echo $scores[1];  ?>"/><br />

        <label>Score 3:</label>
        <input type="text" name="scores[]"
               value="<?php echo $scores[2];  ?>"/><br />
               
        <!-- ADD LOGIC TO DETERMINE WHETHER TO CALCULATE AVERAGE, TOTAL OR BOTH -->
          <fieldset>
       <legend>  What do you want to calculate?</legend>
        <p>
          <input type="radio" name="calculate" value="average" checked="checked" />
          Average<br />
        <input type="radio" name="calculate" value="total" />Total<br />
        <input type="radio" name="calculate" value="both" />Both</p>
        <p><br />
        </p>
        </fieldset>
        <br /><br />
        <label> </label>
        <input type="submit" value="Process Scores" /><br />

        <label>Scores:</label>
        <span><?php if (isset($scores_string)) { echo $scores_string; } ?></span><br />

        <label>Score Total:</label>
        <span><?php if (isset($score_total)) { echo $score_total; } ?></span><br />

        <label>Average Score:</label>
        <span><?php if (isset($score_average)) { echo $score_average; } ?></span><br />
    </form>

 

and the processing code

<?php

if (isset($_POST['action'])) {
    $action =  $_POST['action'];
} else {
    $action =  'start_app';
}

if (isset($_POST['calculate'])) {
$calculate = $_POST['calculate'];
} 


switch ($action) {
    case 'start_app':
        $scores = array();
        $scores[0] = 70;
        $scores[1] = 80;
        $scores[2] = 90;
        break;
    case 'process_scores':
        $scores = $_POST['scores'];

        // validate the scores
        $is_valid = true;
        for ($i = 0; $i < count($scores); $i++) {
            if (empty($scores[$i]) || !is_numeric($scores[$i])) {
                $scores_string = 'You must enter three valid numbers for scores.';
                $is_valid = false;
                break;
            }
        }
        if (!$is_valid) {
            break;
        }

        // process the scores
        $scores_string = '';
        $score_total = 0;
                
        foreach ($scores as $s) {
            $scores_string .= $s . '|';
            $score_total += $s;
        }
        $scores_string = substr($scores_string, 0, strlen($scores_string)-1);

        // calculate the average
        $score_average = $score_total / count($scores);
        
        // format the total and average
    	switch($calculate) {
    		case 'average':
    			$score_average = number_format($score_average, 2);
    			$score_total = "";
    			break;
    		case 'total':
    			$score_average = "";
    			$score_total = number_format($score_total, 2);
    			break;
    		case 'both':
        		$score_total = number_format($score_total, 2);
        		$score_average = number_format($score_average, 2);
        		break;        	
	}
        break;
    
}
include 'loop_tester.php';
?>

[requinix]

You can't select multiple radio buttons (per group). Use checkboxes instead, and name them "calculate[]". Then $_POST["calculate"] will be an array...

[webguync]

ok thanks. Will give that a try.