[SOLVED] form problems?

[darkfreaks]

1.) if statements not working it just outputs everything no matter what category you are in.

 

2.) displays 000.00 instead of 00.00

 

if any of you can  help me out i would be appreciative 

 

<?php
$height= trim($_POST['height']);
$weight=trim($_POST['weight']);
$height=str_replace(',','',$height);
$height=str_replace('.','',$height);
$height=strip_tags($height);
$weight=strip_tags($weight);
$weight=str_replace(',','',$weight);
$weight=str_replace('.','',$weight);

if ($_POST['height']||$_POST['weight']=="true")
{ 
$weighttwo=$weight*100;   

$total=$weighttwo/$height;}
if($_POST['weight']=="") {$error['weight']="<font color=red>Please enter a weight!</font>";} else {unset($error['weight']);}

if($_POST['height']=="") {$error['height']="<font color=red>Please enter a height!</font>";} else {unset($error['height']);} 


if($error) {?>

<form method="POST">

<b>Height(inches):</b><input name="height" type="text" size="3"><?php if ($_POST) { echo $error['height'];} ?><b>Weight(lbs.):</b><input name="weight" type="text" size="3"><?php if ($_POST) { echo $error['weight'];} ?>
<input type="submit" name="Calculate!" value="Calculate!">

</form>
<?php } else{
if($total<18) {
$underoutput= sprintf('%01.2f',$total);
echo"<font color=red>
You're Underweight! Youre BMI is:$underoutput</font>";
}
if($total>18 || $total<25) { 
$healthyoutput= sprintf('%01.2f',$total);
echo"<font color=green>
You're Healthy! Youre BMI is:$healthyoutput</font>";
}
if($total>25 || $total<30) {
$overweightoutput= sprintf('%01.2f',$total);
echo"<font color=orange>
You're Overweight! Youre BMI is:$overweightoutput</font>";
}

if($total>30) { echo "<font color=red>You Are Overweight Please seek Immediate Medical Help!</font>";}




}?>

[xtopolis]

1) You're using || instead of &&

 

2) The answers are coming out as numbers above 100.  I think your formula is wrong, see here: http://www.whathealth.com/bmi/formula.html

 

3) You may want to reorganize your code entirely, it's very confusing.

 

4) Your validation at the top could be condensed.  intval

[darkfreaks]

thanks for the correction the formula was way off

 

anyhow the only problem i am having now is the statements not displaying right any thoughts ???

[xtopolis]

1) You're using || instead of &&

 

Post updated code otherwise?

[darkfreaks]

i changed to && and it doesnt make a licking difference

 

 

Note: i need it outputed using sprint f so it says 00.00 no matter what

[xtopolis]

Post updated code otherwise?

 

Also, why would you want to lie about the math?

[darkfreaks]

i noticed i didnt double the inches so i did

<?php
$total=
$weighttwo/$height*2 //outputs 0000.00
?>

if i dont double the inches i get something like 000.00

 

:-X

 

[xtopolis]

I'm pretty sure the formula is:

[tex]BMI = \left(\frac{weight In Pounds}{height In Inches^2}\right)*703[/tex]

http://www.wikihow.com/Calculate-Your-Body-Mass-Index-(BMI)

 

 

$total = ($weight / ($height * $height)) * 703;

right?

[darkfreaks]

yeah i fixed it i didnt double the inches it works now. however it is doing

 

 

"you are Healthy your BMI is: 25.00"

You are over weight  your BMI is: 25.00"

 

how do i make it display your BMI is 25 you are overweight

 

your BMI is 24.00 you are healthy"

[xtopolis]

$total = ($weight / ($height * $height)) * 703;
$output = sprintf('%01.2f',$total);
switch($total)
{
    case ($total < 18):
    $msg = "<font color=red>You're Underweight! Youre BMI is:$output</font>";
    break;

    case ($total >= 18 && $total < 25):
    $msg = "<font color=green>You're Healthy! Youre BMI is:$output</font>";
    break;

    case ($total >= 25 && $total < 30):
    $msg = "<font color=orange>You're Overweight! Youre BMI is:$output</font>";
    break;

    default:
    $msg = "<font color=red>You Are Overweight Please seek Immediate Medical Help!</font>";
    break;
}
echo $msg;