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House

Apr 23 2008, 09:50 AM

Right then.

Here's a function that will check if a number is valid for price.

It will also round up.

Example:

"Lisa enteres the price for a hotel room of £45.95 which VAT is then added too. This makes the number 57.99125

But oh noes! She can't take that from a bank account. She needs to round it...

*Enter House's house of rounding*"

Ok so enough of the shitty examples.

Code below.

CODE

<?php
// Price validation & rounding script.

// Input parameters = numeric value to validata & round up
// Output parameters = ErrorLeve (0 = pass, 1 = fail)
// & Rounded number

// Calling example - require("classes/class_main.php");
// $array_function = valid_number($number);
// Where $number = number to be validated & rounded.

function valid_number($number){
 if(is_numeric($number)){
 $number = number_format(round($number,2), "2", ".", ",");
 $errorlevel = 0;
 } else {
 echo "Price validation & rounding script. ";
 echo " ";
 echo "Input parameters = numeric value to validata & round up ";
 echo "Output parameters = ErrorLeve (0 = pass, 1 = fail) ";
 echo " & Rounded number ";
 echo " ";
 echo "Calling example - require(\"classes/class_main.php\"); ";
 echo " \$array_function = valid_number(\$number); ";
 echo "Where \$number = number to be validated & rounded. ";

 $errorlevel = 1;
 }
 return(array($errorlevel, $number));
} // End valid function
?>

Enjoy!

House

Apr 23 2008, 11:01 AM

Good luck, have fun.

Apr 23 2008, 12:05 PM

Because the "$array_function" variable isn't global, '$array_function does not exist within the scope of your script (only within the function), your $prot is your '$array_function' variable in the scope of the script, so print_r($prot).

CODE

$prot = valid_number($number, $errorlevel);

You could use http://www.php.net/money_format instead of 'number_format', I'd be inclined to do something like this for checking the price and returning it properly formatted:

CODE

function checkPrice($price)
{
   if(is_numeric($price))
      return sprintf('%01.2f', round($price, 2));
   else
      return false;
}

If you wanted a spot of regex to check the price, you could use:

CODE

preg_match('#^\d+(\.(\d+))?$#', $price)

House

Apr 23 2008, 08:45 PM

lol as allways, thanks bread.

As you can see finished the script.

But as I say, cheers beers!

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