PHP code example of wandersonwhcr / romans

1. Go to this page and download the library: Download wandersonwhcr/romans library. Choose the download type require.

2. Extract the ZIP file and open the index.php.

3. Add this code to the index.php. 
    
        
<?php
require_once('vendor/autoload.php');

/* Start to develop here. Best regards https://php-download.com/ */

wandersonwhcr / romans example snippets


use Romans\Filter\RomanToInt;

$filter = new RomanToInt();
$result = $filter->filter('MCMXCIX'); // 1999


use Romans\Filter\IntToRoman;

$filter = new IntToRoman();
$result = $filter->filter(1999); // MCMXCIX


use Romans\Grammar\Grammar;
use Romans\Lexer\Lexer;
use Romans\Parser\Parser;

$grammar = new Grammar();
$lexer   = new Lexer($grammar);
$parser  = new Parser($grammar);

$tokens = $lexer->tokenize('MCMXCIX');

/*
$tokens = [
    0 => 'M'  // Grammar::T_M
    1 => 'C', // Grammar::T_C
    2 => 'M', // Grammar::T_M
    3 => 'X', // Grammar::T_X
    4 => 'C', // Grammar::T_C
    5 => 'I', // Grammar::T_I
    6 => 'X', // Grammar::T_X
];
*/

$result = $parser->parse($tokens); // 1999


use Romans\Filter\RomanToInt;
use Romans\Lexer\Exception as LexerException;
use Romans\Parser\Exception as ParserException;

$filter = new RomanToInt();

try {
    $filter->filter($input);
} catch (LexerException $e) {
    // Unknown Token (LexerException::UNKNOWN_TOKEN)
} catch (ParserException $e) {
    // Invalid Token Type (Not String) (ParserException::INVALID_TOKEN_TYPE)
    // Unknown Token (ParserException::UNKNOWN_TOKEN)
    // Invalid Roman (ParserException::INVALID_ROMAN)
}


use Romans\Filter\IntToRoman;
use Romans\Filter\Exception as FilterException;

$filter = new IntToRoman();

try {
    $filter->filter($input);
} catch (FilterException $e) {
    // Invalid Integer (< 0) (FilterException::INVALID_INTEGER)
}


use Romans\Filter\RomanToInt;
use Romans\Filter\IntToRoman;

$filter = new RomanToInt();
$result = $filter->filter('N'); // 0 (Zero)

$filter = new IntToRoman();
$result = $filter->filter(0); // N


use Romans\Filter\IntToRoman;
use Romans\Filter\RomanToInt;
use Symfony\Component\Cache\Adapter\ArrayAdapter;

$cache = new ArrayAdapter();

$filter = new RomanToInt();
$filter->setCache($cache);
$result = $filter->filter('MCMXCIX'); // 1999
$result = $filter->filter('MCMXCIX'); // 1999 (from cache)

$filter = new IntToRoman();
$filter->setCache($cache);
$result = $filter->filter(1999); // MCMXCIX
$result = $filter->filter(1999); // MCMXCIX (from cache)