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Inside this article we will see the concept i.e How To Convert a Integer To Roman Numeral in PHP. Article contains the classified information i.e PHP Function which convert a Integer To Roman Numeral.

A Roman numeral is a numeral system used in ancient Rome to represent numbers. Roman numerals use symbols such as I, V, X, L, C, D, and M to represent different values. The value of a symbol is determined by its position relative to other symbols and by the additive combination of the symbols. For example, the symbol “V” represents the value 5, and “X” represents the value 10.

Examples (Roman Numeral)

LVIII (58)
MCMXCIV (1994)
IV (4)

Let’s get started.

Application Programming

Create a folder with name integer-roman.

Next, create a file index.php inside it.

Open index.php and write this complete code into it.

<?php 

// Function to convert a Integer To Roman Number
function intToRoman($num) {
    $map = [
        1000 => 'M',
        900 => 'CM',
        500 => 'D',
        400 => 'CD',
        100 => 'C',
        90 => 'XC',
        50 => 'L',
        40 => 'XL',
        10 => 'X',
        9 => 'IX',
        5 => 'V',
        4 => 'IV',
        1 => 'I',
    ];

    $result = '';
    while ($num > 0) {
        foreach ($map as $key => $value) {
            if ($num >= $key) {
                $num -= $key;
                $result .= $value;
                break;
            }
        }
    }
    return $result;
}


// Call function
echo intToRoman(21);

You can use this function by passing in an integer, and it will return the equivalent Roman numeral.

Application Testing

Open your browser.

Next,

Your project URL will be like this.

URL: http://localhost/integer-roman/index.php

XXI

Output #2

// Call function
echo intToRoman(1994);

This program will give output as,

MCMXCIV

We hope this article helped you to learn about How To Convert a Integer To Roman Numeral in PHP Tutorial in a very detailed way.

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