note 81465 deleted from function.round by danbrown
| From: | danbrown@php.net | Date: | Sun, 17 May 2009 16:15:19 +0000 |
| Subject: | note 81465 deleted from function.round by danbrown | ||
| References: | 1 | Groups: | php.notes |
| Request: | Send a blank email to php-notes+get-154777@lists.php.net to get a copy of this message | ||
Note Submitter: domenicospina at hotmail dot com
----
Hi, approximations with Function Round() are WRONG!!
If you tray to round 2.135 to second digit, expexted value is "2.14", but returned value
is "2.13" : WRONG!!!
I'm developing a managerial program(php-based) and i must solve this bug (currently in
php5.2.5) with my function:
function toFixed($number,$approx=0,$visualizza='E',$format='default')
{
$number = sprintf("%s",sprintf("%f",$number));
$parts = explode(".",$number);
$integers = $parts[0];
$decimals = $parts[1];
if (strpos($integers,"-")!==false){
$integers = str_replace("-","",$integers);
$negative = true;
}
if($approx<1)
{
if ($decimals{0}>=5)
{
$integers++;
}
return $integers;
}
else{
$float = explode(".",($decimals/pow(10,strlen($decimals)))*pow(10,$approx));
$my_decimals = $float[0];
if($decimals{$approx}>=5)
{
$my_decimals++;
}
$total_decimals = ($my_decimals/pow(10,$approx));
}
$my_number = sprintf("%s",sprintf("%f",($integers+$total_decimals)));
$my_number = (strpos($my_number,".")===false)?($my_number."."):$my_number;
$padding = (strpos($my_number,".")+1)+$approx;
$my_number = str_pad($my_number,$padding,"0");
$my_number = substr($my_number,0,strpos($my_number,".")+$approx+1);
$my_number = $negative?("-".$my_number):$my_number;
switch($visualizza)
{
case 'E': //editing
return $my_number;
break;
case 'V': //video
return formatNumber($my_number,$approx,$format);
break;
}
}