Need a bit of help with a rounding up function

[c_shelswell]

Hi i have a function that i got off the php manual site. It rounds up figures to the nearest 2 decimals for me but an odd thing happened last night. Basically i fed it 1.1 and it gave me 1.11

 

here's my code

 

function roundUp ($value, $places=2)
{
  if ($places < 0) 
  { 
   	$places = 0;
  }
  $mult = pow(10, $places);
  
  return ceil($value * $mult) / $mult;
}

 

any help would be great cheers

[Threepwood]

Hi, try use round($number,$decimals)

http://it.php.net/round

 

For example:

function roundUp ($value, $places=2)
{
  if ($places < 0) 
  { $places = 0; }
  $mult = pow(10, $places);
  
  $x=ceil($value * $mult) / $mult;
  return round($x,2);
}

[Archadian]

or you can try number_format() which is alot easier:

 

http://us2.php.net/manual/en/function.number-format.php

[c_shelswell]

hi three that seems to still return 1.11

 

sadly i can't use number format as i need to round it up. i.e. 1.911 should be rounded to 1.92 so number format won't work.

 

 

[Hooker]

Try this, it should let you round up or down depending on what you want

 

<?php
function rounding($no,$direction)
   {                            
   $skip=0;
   if(is_float($no) and $direction = 1)
       {
       $exploded = explode(".",$no);
       $nrr = $exploded[0]+1;    $skip=1;
       }

   if(is_float($no) and $direction = 0)
       {
       $exploded = explode(".",$no);
       $nrr = $exploded[0];        $skip=1;
       }

   if(!is_float($no) and $skip ==1) { $nrr = $nrr; } else { $nrr = floor($nrr); }

     return $nrr;
   }
   
?>

 

Use it like this:

echo rounding(1.6,0);

 

Enter the number first followed bya boolen, 1 to round up, 0 to round down. Always a nice little function to have lying around

[c_shelswell]

Cool thanks i also just found this which seems to work too.

 

function roundUp( $value, $dec = 2 ) 
{
     $value += 0.00;
     $unit  = floor( $value * pow( 10, $dec + 1 ) ) / 10;
     $round = ceil( $unit );
     return $round / pow( 10, $dec );
}

 

i guess you could replace the ceil to floor depening on if you wanted to round up or down.

 

Cheers