forked from miguel456/rbrecruiter
108 lines
2.7 KiB
PHP
108 lines
2.7 KiB
PHP
<?php declare(strict_types=1);
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namespace App\Helpers;
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/**
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* Class DigitalStorageHelper
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*
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* The digital storage helper class helps you convert bytes into several other units.
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* It should be used whenever you need to display a file's size in a human readable way.
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*
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* It's framework agnostic, meaning you can take it out of context and it'll still work; However, you'll have to instantiate it first.
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* @package App\Helpers
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*/
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class DigitalStorageHelper
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{
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/**
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* The digital storage value to be manipulated.
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* @var $value
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*/
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protected $value;
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/**
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* Sets the digital storage value for manipulation.
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*
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* @param int $value The digital storage value in bytes
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* @return $this The current instance
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*/
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public function setValue(int $value): DigitalStorageHelper
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{
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$this->value = $value;
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return $this;
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}
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/**
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* Converts the digital storage value to kilobytes.
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*
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* @return float|int
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*/
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public function toKilobytes(): float
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{
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return $this->value / 1000;
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}
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/**
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* Converts the digital storage value to megabytes.
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*
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* @return float|int
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*/
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public function toMegabytes(): float
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{
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return $this->value / (1 * pow(10, 6)); // 1 times 10 to the power of 6
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}
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/**
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* Convert the digital storage value to gigabytes. Might be an approximation
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*
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* @return float
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*/
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public function toGigabytes(): float
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{
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return $this->value / (1 * pow(10, 9));
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}
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/**
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* Convert the digital storage value to terabytes.
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*
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* @return float
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*/
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public function toTerabytes(): float
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{
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return $this->value / (1 * pow(10, 12));
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}
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/**
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* Format the digital storage value to one of the units: b, kb, mb, gb and tb.
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* The method has been adapted to use both MiB and MB values.
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*
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* @param int $precision The rounding precision
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* @param bool $si Use international system units. Defaults to false
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* @return string The human readable digital storage value, in either, for instance, MB or MiB
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* @see https://stackoverflow.com/a/2510459/11540218 StackOverflow question regarding unit conversion
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* @since 7.3.23
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*/
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public function formatBytes($precision = 2, $si = false): string
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{
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$units = ['B', 'KiB', 'MiB', 'GiB', 'TiB'];
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if ($si)
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$units = ['B', 'KB', 'MB', 'GB', 'TB'];
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$bytes = max($this->value, 0);
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$pow = floor(($bytes ? log($bytes) : 0) / log(($si) ? 1000 : 1024));
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$pow = min($pow, count($units) - 1);
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$bytes /= pow(($si) ? 1000 : 1024, $pow);
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return round($bytes, $precision) . ' ' . $units[$pow];
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}
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}
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