Cardinal Endings

This php based script will find numbers and give them a cardinal ending. This can be useful for displaying rankings or results of a competition. The script is easy to install and use
 

<?php

function addOrdinalSuffix($number) {
    // Determine the last digit of the number
    $lastDigit = $number % 10;
    $lastTwoDigits = $number % 100;

    // Determine suffix based on the number's last digit and last two digits
    if ($lastTwoDigits >= 11 && $lastTwoDigits <= 13) {
        $suffix = 'th';
    } else {
        switch ($lastDigit) {
            case 1:
                $suffix = 'st';
                break;
            case 2:
                $suffix = 'nd';
                break;
            case 3:
                $suffix = 'rd';
                break;
            default:
                $suffix = 'th';
                break;
        }
    }

    return $number . $suffix;
}

function findAndConvertNumbers($text) {
    // Use regex to find all numbers in the text
    $pattern = '/\b\d+\b/';
    $convertedText = preg_replace_callback($pattern, function($matches) {
        return addOrdinalSuffix($matches[0]);
    }, $text);

    return $convertedText;
}

// Example usage
$text = "I was born on the 5 of May. It was the 21 century.";
echo findAndConvertNumbers($text);

?>

Explanation:

• addOrdinalSuffix($number): This function adds the appropriate ordinal suffix based on the last digit(s) of the number. It handles special cases like numbers ending in "11", "12", or "13".
• findAndConvertNumbers($text): This function uses a regular expression to find all standalone numbers in a text string. It then applies addOrdinalSuffix to each found number.

Example Output:

For the input text:

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"I was born on the 5 of May. It was the 21 century."

The output would be:

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"I was born on the 5th of May. It was the 21st century."