Function help

[marcus]

i just started trying to learn basic function work

[code]
<?php

function percent($num,$percent){

if(isset($num) && isset($percent)){

$math = $num * 0.$percent;

echo "$percent% of $num is $math";

}else {
echo "A number and percent must be valid!";
}
}

percent(10,30);

?>
[/code]

I get:

[code]

Parse error: parse error, unexpected T_VARIABLE in C:\Documents and Settings\Owner\Desktop\xampp\htdocs\testing\1a\i2.php on line 7

[/code]

I have tried double quotes but it just echoed it off.

[Orio]

You cant do 0.$percent.
You can do $percent/100 instead :)

Orio.

[marcus]

So $num * ($percent/100) ?

[marcus]

Thanks, it works :D

[complex05]

you cannot use 0.$percent, the script is thinking it's a string.

use $percent = $percent / 100;

[craygo]

I would imagine that line 7 is
[code]$math = $num * 0.$percent;[/code]

You can't have a period in the middle. PHP thinks you are appending something to your variables

do this
[code]<?php
function percent($num,$percent){
  if(is_int($num) && is_int($percent)){
  $div = $percent/100;
$math = $num * $div;

echo "$percent% of $num is $math";

}else {
echo "A number and percent must be valid!";
}
}

percent(10,30);

?>[/code]

Also i changed your check. Af unction will return an error if the variables are not set so no need to double check. What you want to check for is if the variables are integers.

Ray

[Psycho]

Although I think it is very bad format, you can get it to work similar to how you first had it.

$math = $num * ("0.".$pct);