byte-units-master转换字节单位的PHP库.zip

<?php namespace ByteUnits; class ArithmeticTest extends \PHPUnit_Framework_TestCase {     public function testAddInSameUnitSystem()     {         $this->assertEquals(Metric::bytes(10), Metric::bytes(5)->add(Metric::bytes(5)));         $this->assertEquals(Binary::bytes(10), Binary::bytes(5)->add(Binary::bytes(5)));     }     public function testRemoveInSameUnitSystem()     {         $this->assertEquals(Metric::bytes(3), Metric::bytes(5)->remove(Metric::bytes(2)));         $this->assertEquals(Binary::bytes(3), Binary::bytes(5)->remove(Binary::bytes(2)));     }     public function testAutoboxing()     {         $this->assertEquals(Metric::bytes(10), Metric::bytes(5)->add(5));         $this->assertEquals(Metric::bytes(10), Metric::bytes(5)->add('5B'));         $this->assertEquals(Metric::bytes(3), Metric::bytes(5)->remove(2));         $this->assertEquals(Metric::bytes(3), Metric::bytes(5)->remove('2B'));     }本库可以快速的帮你转换字节单位。1个字节等于8bit即1byte = 8 bit,下面是KB,MB,GB,TB的换算1KB = 1024 byte1MB = 1024KB = 1024 X 1024byte1GB = 1024MB1TB = 1024GB