Calculate new value and echo

[imimin]

Could someone please help me? I need to write a math function that will take a value from a data base and calculate 75% of that value and echo it on my website.  How can I do that?

 

Thanks!

[Maq]

function seventyFive($bag)
{
   echo $bag * .75;
}

[imimin]

Should this work the same way if I set it up like this (see approximately line 12):

 

<?php
				$item_selected_style = $_GET['item_selected_style'];
				$item_prod_name = $_GET['item_prod_name'];
				$item_retail = $_GET['item_retail'];
				$item_weight = $_GET['item_weight'];
				$item_img = $_GET['item_img'];

				echo "
				<INPUT TYPE=HIDDEN NAME=name VALUE='$item_prod_name'>
				<INPUT TYPE=HIDDEN NAME=price VALUE='$item_retail*.75'>
				<INPUT TYPE=HIDDEN NAME=sh VALUE='$item_weight'>
				<INPUT TYPE=HIDDEN NAME=img    VALUE='https://secure.impact-impressions.com/poj/includes/img_resize3.php?src=$sitelocation$item_img&width=100&height=100&qua=50'>
				<INPUT TYPE=HIDDEN NAME=img2 VALUE=''>
				<INPUT TYPE=HIDDEN NAME=return VALUE='http://www.patternsofjoy.com'>
				<INPUT TYPE='RADIO' NAME='custom20' VALUE='Style: $item_selected_style' CHECKED='CHECKED' style='display:none'>
				<B>Garment Style: </B>$item_selected_style
				<BR>"
				?>

 

I tried this and it did not pass the value?

[WolfRage]

Try it like this:

 <?php
echo "<INPUT TYPE=HIDDEN NAME=name VALUE='$item_prod_name'>
<INPUT TYPE=HIDDEN NAME=price VALUE='";
echo $item_retail*.75;
echo "'>
<INPUT TYPE=HIDDEN NAME=sh VALUE='$item_weight'>
<INPUT TYPE=HIDDEN NAME=img    VALUE='https://secure.impact-impressions.com/poj/includes/img_resize3.php?src=$sitelocation$item_img&width=100&height=100&qua=50'>
<INPUT TYPE=HIDDEN NAME=img2 VALUE=''>
<INPUT TYPE=HIDDEN NAME=return VALUE='http://www.patternsofjoy.com'>
<INPUT TYPE='RADIO' NAME='custom20' VALUE='Style: $item_selected_style' CHECKED='CHECKED' style='display:none'>
<B>Garment Style: </B>$item_selected_style
<BR>"
?>

Yes I broke it up more than is probably necessary.

[imimin]

That didn't seem to work? ??? Any more ideas?

[natepizzle]

Try

 

$item_retail = ($_GET['item_retail'] * .75);

 

and remove

 

*.75

 

from <INPUT TYPE=HIDDEN NAME=price VALUE='$item_retail*.75'>

 

[Lumio]

Maybe this will work:

<?php
if (array_key_exists('item_retail', $_GET))
	echo floatval($_GET['item_retail']) * .75

[imimin]

function seventyFive($bag)
{
   echo $bag * .75;
}

 

How do you round this to 2 digits?

[imimin]

Sorry...I meant to say how do you round this off to 2 decimal places?

[Maq]

number_format

[pacchiee]

Function to round the result to two decimal points:

 

<?php
function seventyFive($bag)
{
   echo round($bag * .75,2);
}
?>

 

You can call the function like below:

 

<?php
seventyFive(2500.98);
?>

 

Output will be 1875.74