PHP Forum

**capetek** · 04-20-2005, 01:29 PM

Well Im trying to make a quote calculator, I have the first one done but im having trouble with variables for the other ones. the first quote is as follows:

v=sale amount

up to $200

x=v*42.9%

201-500

y=$85.80+((v-200)*37.9%))

500 and up

z=$275.30+((v-500)*27.9%))

Does anyone know if y and z are even possible in php? U can calculate just a percentage of 42.9 percent but can i add more mathematical functions to that? and if someone knows how? It would be greatly appreciated if someone could help me. I am willing to compensate for the help they gave me.

The php code:

PHP Code:


			
<body>

 

 <?php

 

 if ($sub_total == "") { echo "<h4>Error: You need to input a total!</h4>";}

 

 if ($tip_percent == "") { echo "<h4>Error: You need to input a tip percentage!</h4>";}

 

 $tip_decimal = $tip_percent/100;

 

 $tip = $tip_decimal * $sub_total;

 

 $total = $sub_total + $tip;

 

 ?>

 

 <form action="tips.php3" method="get">

 

 <p>Consignment Price: <strong>$<?php echo $sub_total; ?></strong></p>

 

 <p>Commission%: <strong><?php echo $tip_percent; ?>%</strong></p>

 

 <p>Commission Total: <strong>$<?php echo $tip; ?></strong></p>

 

 <p>Total Price: <font size="+1" color="#990000"><strong>$<?php echo $total; ?></strong></font></p>

 

 </form>

 

 </body>

and the form code:

HTML Code:

<body>
Sales Up to $200 <br>

<form action="tips.php3" method="get">

<p>Consignment Cost: $
  <input type="text" name="sub_total" value="" size="7"></p>

<p>Commission Rate  %: 
  <input type="text" name="tip_percent" value="42.9" size="3">%</p>

<p><input type="submit" value="Calculate!"></p>

</form>
Sales $201-$500<br>
<form action="tips.php3" method="get">

<p>Consignment Cost: $
  <input type="text" name="sub_total" value="" size="7"></p>

<p>Commission Rate  %: 
  <input type="text" name="tip_percent" value="42.9" size="3">%</p>

<p><input type="submit" value="Calculate!"></p>

</form>
Sales $500 and up <br>
<form action="tips.php3" method="get">

<p>Consignment Cost: $
  <input type="text" name="sub_total" value="" size="7"></p>

<p>Commission Rate  %: 
  <input type="text" name="tip_percent" value="42.9" size="3">%</p>

<p><input type="submit" value="Calculate!"></p>

</form>
</body>

**capetek** · 04-20-2005, 01:39 PM

does anyone know if this would be correct?

$total = 85.80 + ($sub_total - 200) * $tip ;

**angele803** · 04-20-2005, 01:52 PM

You should be able to use x, y, and z as variables. Im not really sure I understand what calculations you are needing help with. Are the calculation you posted for the ones that work or the ones you are having trouble with?

**capetek** · 04-20-2005, 02:02 PM

well I have the first one working correctly but the 2nd and 3rd ones i dont, Im working ont he second one right now and this is what i have so far

tips2.php

PHP Code:


			
 <?php

 

 if ($sub_total == "") { echo "<h4>Error: You need to input a total!</h4>";}

 

 if ($tip_percent == "") { echo "<h4>Error: You need to input a tip percentage!</h4>";}

 

 $tip_decimal = $tip_percent/100;

 

 $price= 85.80;

 

 $tip = $tip_decimal * $sub_total;

 

 $total =  $price + (($sub_total - 200) * $tip) ;

 

 ?>

but doesnt seem to be calculating it correctly,

you can see it in action here

thanks for your response

**angele803** · 04-20-2005, 02:14 PM

Okay, I am starting to see what you are doing now. So, for example. If the sales amount is $250, the first 200 would be calculated with a percentage rate of 42.9 and the remaining 50 would be calculated with the percentage rate of 37.9. Is this correct?

**angele803** · 04-20-2005, 02:16 PM

Or is it this way...
If it is between 201 and 500 the entire total is calculated with the percentage of 37.9?

**capetek** · 04-20-2005, 02:19 PM

Yeah thats exactly what im doing, the 2nd response. heh this thing is driving me crazy

v=sale amount

x=v*42.9%
y=$85.80+((v-200)*37.9%))
z=$275.30+((v-500)*27.9%))

x=sales up to $200
y= sales from $201-500
z=sales >$500

i thought i had it again but nope!

PHP Code:


			
 <?php

 

 if ($sub_total == "") { echo "<h4>Error: You need to input a total!</h4>";}

 

 if ($tip_percent == "") { echo "<h4>Error: You need to input a tip percentage!</h4>";}

 

 $tip_decimal = $tip_percent/100;

 

 $price = 85.80;

 

 $tip = $price + (($sub_total - 200) *  $tip_decimal);

 

 $total = $sub_total + $tip;

 

 ?>

**capetek** · 04-20-2005, 02:25 PM

Oh wait I think thats correct!

**angele803** · 04-20-2005, 02:29 PM

Okay, say the sales amount is $250. I would pay a commision of $94.75 (250*37.9%) for a grand total of 344.75 (250+94.75)? Right?
You could do this in one step with this expression (salesAmount*1.379)
Im not sure what the 85.80 is for and why you are subtracting 200. I think I might still be confused. Sorry!

**capetek** · 04-20-2005, 02:53 PM

Hehe im not quite sure about those totals myself, the customer gave them to me. But i think i got it anyways, i did the math out on paper and it equals the same as my quote calculator

this was the correct way

PHP Code:


			
 <?php

 

 if ($sub_total == "") { echo "<h4>Error: You need to input a total!</h4>";}

 

 if ($tip_percent == "") { echo "<h4>Error: You need to input a tip percentage!</h4>";}

 

 $tip_decimal = $tip_percent/100;

 

 $price = 85.80;

 

 $tip = $price + (($sub_total - 200) *  $tip_decimal);

 

 $total = $sub_total + $tip;

 

 ?>

and for the 3rd section

PHP Code:


			
 <?php

 

 if ($sub_total == "") { echo "<h4>Error: You need to input a total!</h4>";}

 

 if ($tip_percent == "") { echo "<h4>Error: You need to input a tip percentage!</h4>";}

 

 $tip_decimal = $tip_percent/100;

 

 $price = 275.30;

 

 $tip = $price + (($sub_total - 500) *  $tip_decimal);

 

 $total = $sub_total + $tip;

 

 ?>

Thanks for your help!