README

相同尺寸的轮胎可能会有不同的标记。最著名的是美国（英寸 31x10.5R16）和欧洲（公制）。

英寸尺寸指定轮胎的高度和宽度以及轮辋的英寸尺寸。例如 31x10.5R16。

在第二种情况下，标记包括毫米单位的宽度，轮胎胎面高度占轮辋尺寸的百分比： 265/75R16

此外，一些制造商以特殊方式标记轻型卡车、卡车和充气轮胎。例如，在Interco公司，某些轮胎的宽度和高度被颠倒（Bogger轮胎B-119的 16x35-16 而不是 35x16-16）。许多充气轮圈用公制单位标记，但不标明胎面： 1300x700-24 一些轮胎没有包含标记尺寸的明确信息，例如 Q78-15 或 160m。

这个库可以帮助处理这种多样的标记。它可以用来创建轮胎计算器或搜索轮胎数据库。

安装

可以使用Composer安装轮胎尺寸解析器。运行以下命令

    composer require gan4x4/tyresize

用法

<?php

/* 
 * Example of tyresize library usage
 */

require_once("../vendor/autoload.php");

use gan4x4\Market\Size\TyreSize;
use gan4x4\Market\Size\InvalidTyreSizeException;

try{
    
    // Call factory method that return instance  of TyreSize descendant.
    // Class of returned object depends of what type of tyre marking 
    $firstTyre = TyreSize::parseSize("36x12.5-16");  // Instance
    print "Size parsed! \n";
    
    print "This tyre width is ".$firstTyre->getMetricWidth()."mm \n"; 
    //This tyre width is 320mm 
    
    print "this tyre has profile ". $firstTyre->getProfile()."%\n"; 
    //this tyre has profile 80%
    
    print "this tyre full metric name is ".$firstTyre->getMetricName()."\n";
    //this tyre full metric name is 320/80-16
    
    print "Value of 4 tyre is ".($firstTyre->getValue()*4)." m3 \n";
    //Value of 4 tyre is 1.161288 m3 
    
    print "\nCompare tyres\n";
    $secondTyre = TyreSize::parseSize("375/65R16");
    
    if ($firstTyre->getInchHeigth() > $secondTyre->getInchHeigth()){   
        print $firstTyre->getOriginal()." is bigger than ".$secondTyre->getOriginal()."\n";
        
    }
    // 36x12.5-16 is bigger than 375/65R16
    
    if ($firstTyre->getInchWidth() < $secondTyre->getInchWidth()){   
        print "But ". $secondTyre->getOriginal()." is more fat  than ".$firstTyre->getOriginal()."\n";
    }
    // But 375/65R16 is more fat  than 36x12.5-16

    print "\nYou can use some rare marks\n";
     
    $q78 = TyreSize::parseSize("Q78-15");
    print $q78->getOriginal()." is equal to ".$q78->getInchName()."\n";
    $fullProfileTyre = TyreSize::parseSize("195R16");
    // Q78-15 is equal to 35.5x11-15
    print $fullProfileTyre->getOriginal()." is equal to ".$fullProfileTyre->getMetricName()."\n";
    // 195R16 is equal to 195/80R16
    
} catch (InvalidTyreSizeException $ex) {
    print "Invalid tyre size";
}