PHP: Text Spinner Class - Nested spinning supported.

spintax.php

<?PHP
/**
 * Spintax - A helper class to process Spintax strings.
 * @name Spintax
 * @author Jason Davis - https://www.codedevelopr.com/
 * Tutorial: https://www.codedevelopr.com/articles/php-spintax-class/
 */
class Spintax
{
    
    public function setSeed($seed)
    {
        srand($seed);
    }
    
    public function process($text)
    {
        return preg_replace_callback(
            '/\{(((?>[^\{\}]+)|(?R))*?)\}/x',
            array($this, 'replace'),
            $text
        );
    }
    public function replace($text)
    {
        $text = $this->process($text[1]);
        $parts = explode('|', $text);
        return $parts[array_rand($parts)];
    }
}
/* EXAMPLE USAGE */
$spintax = new Spintax();
$string = "{Hello|Howdy|Hola} to you, {Mr.|Mrs.|Ms.} {Smith|Williams|Davis}!"."\n";
echo $spintax->process($string);
/* NESTED SPINNING EXAMPLE */
echo $spintax->process("{Hello|Howdy|Hola} to you, {Mr.|Mrs.|Ms.} {{Jason|Malina|Sara}|Williams|Davis}")."\n";
/* SET SEED EXAMPLE */
// Sets the seed for the random function. As result, the spin will always output the same text
// no matter how many times you process it. Text Id 100 will always be Hello
$idText = 100;
$spintax->setSeed($idText);
$textId100 = $spintax->process("{Hello|Hi!} {man|guy}")."\n";
echo $textId100;