[SOLVED] radio buttons

spooke2k · June 6, 2007

need some help i have a series of radio buttons which when are clicked i want to auto the php page to refresh and then exercute my sql quries and return information.

on my form i am using <form action= <?php echo $_SERVER["../PHP_SELF"]; ?> method="POST">

</div>

<tr>

</div></td>

</tr>

<tr>

<td height="30">Wildlife</td>

</div></td>

</tr>

<tr>

<td>Gardening</td>

</div></td>

</tr>

<tr>

<td>Outdoor Life</td>

</div></td>

</tr>

<tr>

</div></td>

</tr>

<tr>

<td>Gifts </td>

</div></td>

</tr>

<tr>

<p>

</div></td>

</tr>

</table>

</form>

<?php

switch(group1){

case 'boot':

$cat="1";

break;

case 'wildlife':

$cat="2";

break;

case 'gardening':

$cat="3";

break;

case 'outlife':

$cat="4";

break;

case 'home':

$cat="5";

break;

case 'gifts':

$cat="6";

break;

default:

$cat="1";

}

$cat is then used below as a unique number for my select query which happens.

but i need it to action as they switch between radio buttons automatically many thanks

Psycho · June 6, 2007

PHP runs on the server - not the client (i.e. browser). Once the page is created and returned to the browser, you can no longer run PHP. You can either:

1. Query for all the possibile results for each radio button and then use DHTML to show/hide the appropriate content based upon the radio button selected

2. Have the page auto-submitted based upon a radio button selection using Javascript. Then do the query and resend the page with the updated content

3. Use AJAX - a combination of Javascript and PHP to externally run a PHP file to run the query and return the results and then display the results using DHTML.

The appropriate solution will most likely depend on how "big" your results are. If small enough I would go with option 1 as it would be the faster for the user and the least work for your server. For very big results I would go with option 2. Option 3 falls in the middle.

Illusion · June 6, 2007

try this



<?php

if( $_POST['submit_button']=='Submit' )

{

if(isset($_POST['group1']))

{



switch($_POST['group1']){

    case 'boot':

      $cat="1";

    	break;

    case 'wildlife':

 		$cat="2";

   		 break;

    case 'gardening':

  		$cat="3";

   		 break;

   case 'outlife':

  		$cat="4";

   		 break; 

  case 'home':

  		$cat="5";

   		 break;

  case 'gifts':

  		$cat="6";

   		 break;	 

default:

		$cat="1";

 	}

}

else

{

echo "No radio button is selected";

//write code to display options again.

}

}

?>




[/Code]

spooke2k · June 6, 2007

what have i done wrong the submit button isnt working keeps comming up with error 500

<html>

<head>

<title>Implementing Paging with next and prev</title>

<!--

.style1 {

font-size: 16px;

font-weight: bold;

}

-->

</style></head>

<body>

<div align="center">PRESS IMAGE APPLICATION

<form action= <?php echo $_SERVER["../PHP_SELF"]; ?> method="POST">

</div>

<tr>

</div></td>

</tr>

<tr>

<td height="30">Wildlife</td>

</div></td>

</tr>

<tr>

<td>Gardening</td>

</div></td>

</tr>

<tr>

<td>Outdoor Life</td>

</div></td>

</tr>

<tr>

</div></td>

</tr>

<tr>

<td>Gifts </td>

</div></td>

</tr>

<tr>

<p>

</div></td>

</tr>

</table>

</form>

<?php

if( $_POST['submit_button']=='Submit' )

{

if(isset($_POST['group1']))

{

switch($_POST['group1']){

case 'boot':

$cat="1";

break;

case 'wildlife':

$cat="2";

break;

case 'gardening':

$cat="3";

break;

case 'outlife':

$cat="4";

break;

case 'home':

$cat="5";

break;

case 'gifts':

$cat="6";

break;

default:

$cat="1";}

}

else

{

echo "No radio button is selected";

//write code to display options again.

echo '<form action= <?php echo $_SERVER["../PHP_SELF"]; ?> method="POST">

</div>

<tr>

</div></td>

</tr>

<tr>

<td height="30">Wildlife</td>

</div></td>

</tr>

<tr>

<td>Gardening</td>

</div></td>

</tr>

<tr>

<td>Outdoor Life</td>

</div></td>

</tr>

<tr>

</div></td>

</tr>

<tr>

<td>Gifts </td>

</div></td>

</tr>

<tr>

<p>

</div></td>

</tr>

</table>

</form>';

}

Psycho · June 6, 2007

You have PHP code within your echo string

Change this

echo '<form action= <?php echo $_SERVER["../PHP_SELF"]; ?> method="POST">

To this

echo '<form action="'.$_SERVER["../PHP_SELF"].'" method="POST">

Psycho · June 6, 2007

Ok, I just took a closer look at your page. Why are you displaying the form twice? Also, you have no logic to reselect the option that was previously selected.

spooke2k · June 6, 2007

still not working thanks for surjestion but can you show me what u mean by passing that logic between the submit as im new to php sorry for being a noobie

Spooke2k

Psycho · June 6, 2007

Ok, here is a working prototype. However, you should make an additional change. If you want the values of 1, 2, 3,... instead of "boot", "wildlife", etc. Then change your values to that! No need to use that switch statement to transpose from one value to another! Persoanlly I would use the values you have instead of 1, 2, 3... for the category as they are more descriptive and you won't have to remember which number goes with what category.

I put the radio labels and values into an array to make the processing a bit easier. Hope it does not confuse the situation.

<html>
<head>
<title>Implementing Paging with next and prev</title>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<style type="text/css">
<!--
.style1 {
   font-size: 16px;
   font-weight: bold;
}
-->
</style></head>

<body>

<div align="center">

PRESS IMAGE APPLICATION

<form action= <?php echo $_SERVER[php_SELF]; ?> method="POST">

    <table width="226" border="1" align="center">

<?php

$radioList = array("Boot Room"=>"boot", "Wildlife"=>"Wildlife", "Gardening"=>"Gardening",
                   "Outdoor Life"=>"outlife", "Home"=>"home", "Gifts"=>"gifts");

foreach ($radioList as $label=>$value) {

    $selected = ($value==$_POST[group1])?' checked':'';
    echo "      <tr>\n";
    echo "        <td height=\"30\">$label</td>\n";
    echo "        <td><div align=\"center\">\n";
    echo "          <input type=\"radio\" name=\"group1\" value=\"$value\"$selected>\n";
    echo "        </div></td>\n";
    echo "      </tr>\n";
}

?>
      <tr>
        <td><input type="text" name="textfield"></td>
        <td><div align="center">
           <p>
             <input type="submit" value="Submit" name="submit_button"></p>

        </div></td>
      </tr>
    </table>

</form>

<?php

if( $_POST['submit_button']=='Submit' )
{
   switch($_POST['group1']){
      case 'wildlife':
          $cat="2";
           break;
      case 'gardening':
          $cat="3";
          break;
      case 'outlife':
          $cat="4";
          break; 
      case 'home':
          $cat="5";
          break;
      case 'gifts':
          $cat="6";
          break;
      case 'boot':
      default:
          $cat="1";
   } //End switch

   echo "The category is: $cat ($_POST[group1])";

}
?>
</div>
</body>
</html>

spooke2k · June 6, 2007

Thanks so much for that.

some times cant see the wood from the trees so many thanks.

Spooke2k

this forumn seriously rocks

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[SOLVED] radio buttons

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