/*******************************************************************************************
* This class will convert file size in different units like Bytes/KB/MB/GB/TB
* PHP provides a function filesize() which always return file size in bytes.
* This class will help to get the file size by Bytes/KB/MB/GB/TB format.
* This class consists of two functions fileSizeByFileName(),fileSizeConversion()
* By : SUBHRANIL DALAL
* Mindfire Solutions (www.mindfiresolutions.com) Date : 07/10/2009
* ****************************************************************************************/
/*****************************************************************************************
* Function Name : fileSizeByFileName()
* Description : This function will take the file name as argument and return
* file size in Bytes/KB/MB/GB/TB format.
* InputArgs : $fileName (Required)(pass the absolute location of a file)
* $roundOff (Optional) (by default it will round off upto
* 2 decimal palces, can be changed as requirement)
* OutPut : Return file size in B/KB/MB/GB/TB
* Use : $obj = new getFileSize();
* echo $obj->fileSizeByFileName('file_size.pdf');
* echo $obj->fileSizeByFileName('file_size.pdf', 5);
* **************************************************************************************/
/*****************************************************************************************
* Function Name : fileSizeConversion()
* Description : Take the file size in any unit (B/KB/MB/GB/TB) and convert it to
* required unit.
* InputArgs : $fileSize (Required)(The numeric size value of file in any unit)
*
* $currentUnit (Optional)(The file size unit which will be converted
* to the required unit, default it will take byte as
* default unit. This parameter will pass as B/KB/MB/GB/TB
* as file size unit.)
*
* $requiredUnit (Optional) (This parameter for the unit which we want
* to get the file size.If nothing is passed it will
* represend in maxime possible unit conversion.
* This parameter will pass as B/KB/MB/GB/TB format )
*
* $roundOff (Optional) (by default it will round off upto
* 2 decimal palces, can be changed as requirement)
* OutPut : Return file size in B/KB/MB/GB/TB or required format
* Use : $obj = new getFileSize();
* echo $obj->fileSizeConversion(2030);
* echo $obj->fileSizeConversion(45678903,'B');
* echo $obj->fileSizeConversion(367830,'B','MB');
* echo $obj->fileSizeConversion(5.34,'GB','MB',5);
* echo $obj->fileSizeConversion(6.84,'MB','GB',10);
* ******************************************************************************************/
class getFileSize {
private $size;
function __construct(){
$this->size = array(
array(
'minSize' => '1208925819614629174706176',
'unit' => 'YB',
'rank' => '9'
),
array(
'minSize' => '1180591620717411303424',
'unit' => 'ZB',
'rank' => '8'
),
array(
'minSize' => '1152921504606846976',
'unit' => 'EB',
'rank' => '7'
),
array(
'minSize' => '1125899906842624',
'unit' => 'PB',
'rank' => '6'
),
array(
'minSize' => '1099511627776',
'unit' => 'TB',
'rank' => '5'
),
array(
'minSize' => '1073741824',
'unit' => 'GB',
'rank' => '4'
),
array(
'minSize' => '1048576',
'unit' => 'MB',
'rank' => '3'
),
array(
'minSize' => '1024',
'unit' => 'KB',
'rank' => '2'
),
array(
'minSize' => '0',
'unit' => 'B',
'rank' => '1'
)
);
}
function fileSizeByFileName($fileName, $roundOff = '2'){
$fileSize = filesize($fileName);
foreach($this->size as $key => $result){
if( $fileSize >= $result['minSize'] ){
$requiredUnitRank = $result['rank'];
$requiredUnit = $result['unit'];
$requiredMinSize = $result['minSize'];
break;
}
}
$finalSize = number_format( ( $fileSize / $requiredMinSize ),$roundOff );
return $finalSize.' '.$requiredUnit;
}
function fileSizeConversion($fileSize, $currentUnit = 'B', $requiredUnit = '', $roundOff = '2'){
foreach($this->size as $key => $result){
if( $result['unit'] == strtoupper($currentUnit) ){
$currentUnitRank = $result['rank'];
$currentMinSize = $result['minSize'];
}
}
if($requiredUnit == ''){
foreach($this->size as $key => $result){
if( $fileSize >= $result['minSize'] ){
$requiredUnitRank = $result['rank'];
$requiredUnit = $result['unit'];
$requiredMinSize = $result['minSize'];
break;
}
}
} else {
foreach($this->size as $key => $result){
if( $result['unit'] == strtoupper($requiredUnit) ){
$requiredUnitRank = $result['rank'];
$requiredUnit = $result['unit'];
$requiredMinSize = $result['minSize'];
}
}
}
if($requiredUnitRank > $currentUnitRank){
$diffRank = $requiredUnitRank - $currentUnitRank;
$calculationSize = ( $currentMinSize == 0) ? 1 : $currentMinSize ;
for($start = 1; $start <= $diffRank; $start++)
$calculationSize = $calculationSize * 1024;
$finalSize = number_format( ( $fileSize / $calculationSize ),$roundOff );
} elseif ($requiredUnitRank < $currentUnitRank){
$finalSize = number_format( ( ($fileSize * $currentMinSize) / $requiredMinSize),$roundOff );
} else {
$finalSize = $fileSize;
}
return $finalSize.' '.$requiredUnit;
}
};
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