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PHP convert interger bytes to either bytes, Kb, or Mb depending on size

Hi there, I'm trying to create a simple script within PHP that gets an interger from the variable $size and converts this number into another variable $size2 which is either a value of bytes if less than 1024, kb if between 1024 and 1024*1024 and mb for anything greater.

//Rough code so far, returns a T_Variable error
if ($size > 1024 && < 1024*1024 ){
int $size2==($size/1024);
$size3== "$size2 kb";
}

Help writing the script will be very much appreciated. Cheers

keteracel

<?php

function getBytesString($number) {
$thousandArray = array();
$thousandArray[0] = '';
$thousandArray[1] = 'K';
$thousandArray[2] = 'M';
$thousandArray[3] = 'G';
$thousandArray[4] = 'T';

for ($i = 0; $number > 1024 && $i < count($thousandArray); $i++) {
$number /= 1024;
}
return number_format($number,2).' '.$thousandArray[$i].'b';
}

echo getBytesString(1024)." ";
echo getBytesString(1025)." ";
echo getBytesString((1024*1024)+1)." ";
echo getBytesString((1024*1024*1024)+1)." ";
echo getBytesString((1024*1024*1024*1024)+1)." ";

?>

keteracel

this one goes up to pica and allows you to define whether it's bytes or bits:

<?php

function getBytesString($number, $bytes=true) {
$bitsOrBytes = ($bytes)?'B':'b';

$thousandArray = array();
$thousandArray[0] = '';
$thousandArray[1] = 'K';
$thousandArray[2] = 'M';
$thousandArray[3] = 'G';
$thousandArray[4] = 'T';
$thousandArray[5] = 'P';

for ($i = 0; $number > 1024 && $i < count($thousandArray); $i++) {
$number /= 1024;
}
return number_format($number,2).' '.$thousandArray[$i].$bitsOrBytes;
}

echo getBytesString(1024, false)." ";
echo getBytesString(1024)." ";
echo getBytesString(1025)." ";
echo getBytesString((1024*1024)+1)." ";
echo getBytesString((1024*1024*1024)+1)." ";
echo getBytesString((1024*1024*1024*1024)+1)." ";
echo getBytesString((1024*1024*1024*1024*1024)+1)." ";
echo getBytesString((1024*1024*1024*1024*1024*1024)+1)." ";

?>

noisecouk

ASKER

Haha! I don't think I'll be uploading files any bigger than a couple of Mb. Think of the bandwidth is a couple of people download Pica byte files!!

I've decided to use my script which works here as I only need it to go up to Mb. Is there any I can output the value of Mb so it leaves me with 2 decimal places?

 if($size < 1024){
 $size3="$size bytes";
 }
 if($size > 1024 && $size < 1048576){
 $size2= floor($size/1024);
 $size3="$size2 Kb";
 }
 if($size > 1048576){
 $size2= floor($size/1048576);
 $size3="$size2 Mb";
 }

ASKER CERTIFIED SOLUTION

keteracel

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noisecouk

ASKER

Cheers! :)