[Resolved] Display PHP variable depending on which radio button is selected

micmac

Hi all,
I currently have a page that uses javascript to make visable/invisable a <TR> if a particular condition is met ie. the radio buttons.
This all works fine but what i want to add is, depending on which radio button is selected, i want to add the PHP variable (the shipping cost) to the bottom of the script (where is says "RESULT HERE").
For example, if the Standard Post radio button is selected i want the $pcRate_1 variable to show at the bottom of the script, alternatively, if the Express Post option is selected i want it to display the $pcRate at the bottom.
Any ideas on how to acheive this?

Cheers,
micmac

<?
session_start();
?>
<HTML><HEAD>
<script language="javascript"> 
<!-- 
function swapIt(chk) {
if(chk.value == "S") document.getElementById('theRow').style.visibility="visible";
else {
	document.getElementById('theRow').style.visibility="hidden";

 }
}
// --> 
</script>
</HEAD>
<? 
if($_SESSION['ship_method'] == 'E'){
?>
<BODY leftMargin=0 topMargin=0 marginwidth="0" marginheight="0" onLoad="swapIt(this)">
<?
} else { 
?>
<BODY leftMargin=0 topMargin=0 marginwidth="0" marginheight="0">
<?
}
?>
<TABLE width=290 border=0 cellPadding=0 cellSpacing=0>
  <TBODY>
    <TR> 
      <TD colSpan=2><SPAN class=text2boldblue>Shipping methods available for the<BR>
      item(s) on left (Please select one):</SPAN></TD>
      <TD width=10></TD>
    </TR>
    <TR> 
      <TD colSpan=3 height=10><IMG height=10 src="images/spacer.gif" width=10></TD>
    </TR>
    <TR vAlign=top> 
      <TD class=text2 width=17><INPUT type=radio <? if($_SESSION['ship_method'] != 'E' || $_SESSION['ship_method'] == 'S') echo "CHECKED"; ?> 
      value="S" name="ship_method" onClick="swapIt(this)"></TD>
      <TD width=251 valign="top" class=text2><B>Standard</B> (3 to 5 business days for shipping, plus processing time*) 
    <? 
    if ($pcRate_1 == 0){
    echo "<b>FREE</b>";
    } else {
    echo "$".number_format($pcRate_1, 2, ".", ","); 
    }
    ?>
      </TD>
      <TD width=10><IMG height=10 src="images/spacer.gif" width=10></TD>
    </TR>
    <TR> 
      <TD colSpan=3 height=10><IMG height=10 src="images/spacer.gif" width=10></TD>
    </TR>
    <TR vAlign=top> 
      <TD class=text2 width=17><INPUT type=radio <? if($_SESSION['ship_method'] == 'E') echo "CHECKED"; ?> value="E" name="ship_method" onClick="swapIt(this)"></TD>
      <TD class=text2 width=251><B>Express</B> (1 business day for shipping, plus processing time*) $<? echo number_format($pcRate, 2, ".", ","); ?></TD>
      <TD width=10><IMG height=10 src="images/spacer.gif" width=10></TD>
    </TR>
    <TR> 
      <TD colSpan=3 height=10><IMG height=10 src="images/spacer.gif" width=10></TD>
    </TR>
    <TR vAlign=top style="visibility:visible" id="theRow"> 
      <TD class=text2 width=17>
         <input type="checkbox" name="reg_post" value="Y" <? if($_SESSION['reg_post'] == 'Y') echo "CHECKED"; ?>></TD>
      <TD class=text2 width=251>If you would like SWIFTFLIX to ship your order <strong>Registered Post</strong> please tick the box on the left. (Standard Post Only)</TD>
      <TD width=10><IMG height=10 src="images/spacer.gif" width=10></TD>
    </TR>
    <TR> 
      <TD colSpan=3 height=10><IMG height=10 src="images/spacer.gif" width=10></TD>
    </TR>
    <TR> 
      <TD colSpan=3 height=10>RESULT HERE</TD>
    </TR>
  </TBODY>
</TABLE>

LordShryku

Without reloading the page, I don't think you can do this with PHP. You have to tell the server what radio button is checked before it can process it in PHP. You'd probably be better off doing this in javascript.

bunner_bob

If the values of the variables are loaded into the page, you can shoot them to any named (or rather, id'd) region using something like this:

Javascript:
function displayShipping(price) {
document.getElementById("result").innerHTML = "$ " + price;
}

and your radio could be:
<INPUT type=radio<?if($SESSION['ship_method']=='E')echo"CHECKED";?>_value="E" name="ship_method" onClick="displayShipping(<?php echo $shipping_cost_E; ?>)">

and your result <TD>:
<TD colSpan=3 height=10 id="result">RESULT HERE</TD>

I think that'd work.

I did something similar for a slideshow-page-format thing I built. Check it out (with missing graphics for some reason) at:
Slideshow edit
Notice how the feedback area at right updates when you make changes in the edit area at left.

micmac

Thanks for the reply guys.

bunner bob....i've tested what you said and it works perfectly.
What i am having trouble with is calling two functions with the one onclick.
As you can see from my code i already use

onClick="swapIt(this)"

I cant seem to be able to add your

onClick="displayShipping(<?php echo $shipping_cost_E; ?> )"

Any ideas on how to run both functions?

Cheers,
micmac

micmac

Got it!
My mistake....thanks for you help.

micmac

Just while your there i can't seem to be able to add the number_format() to the code...eg.

onClick="swapIt(this); displayShipping(<?php echo number_format($pcRate_1, 2, ".", ","); ?> );">

The "result" only displays, for example 1.5 not 1.50

Any ideas?

Cheers,
micmac

bunner_bob

Use printf() (or is it sprintf()?) - lets you specify the number of decimal places to display to.

Here's an example from the PHP manual for sprintf():

$money1 = 68.75;
$money2 = 54.35;
$money = $money1 + $money2;
// echo $money will output "123.1";
$formatted = sprintf("%01.2f", $money);
// echo $formatted will output "123.10"