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 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}!';
echo $spintax->process($string);

/* NESTED SPINNING EXAMPLE */
echo $spintax->process('{Hello|Howdy|Hola} to you, {Mr.|Mrs.|Ms.} {{Jason|Malina|Sara}|Williams|Davis}');

it's pretty cool .. many thanks

Interesting, thank you

Nice short code! Can you help explain the regex pattern: /{(((?>[^{}]+)|(?R))*)}/x
I'm trying to rewrite in Powershell/.NET. Especially, what is the ?R

@NealWalters here you go:

/
  \{                    # opening curly ({) bracket
  (                     # group $1
    (                   # group $2
      (?>               # group $3
                        # Atomic group - Matches the longest possible substring in the group and doesn't allow later backtracking to reevaluate the group.
        [^\{\}]+        # one or more characters which are not "{" or "}"
      )
      |                 # or
      (?R)              # recursive match on the pattern itself - next nesting level of {}
    )*                  # zero or more times
  )
  \}                    # ended with curly (}) bracket
/x                      # PCRE_EXTENDED - whitespaces are ignored, # means comments

thank you, anyway is it possible for making this spin work if only for first opening file and not working after it has been refresh ?

Perfectly working. Thank you so much for the explanation about the regexp.
Regexp are really cool, but not so easy to understand/explain, also has a really HUGE syntax :)

Simple but powerful :)

Thanks

[ask] it is possible to spin the title also ?

If you want to use the [square|brackets|syntax] use this line in the process function:

'/\[(((?>[^\[\]]+)|(?R))*)\]/x',

thanks @lury

Thank for very helpful code.
How can I use PHP to find match text in data then replace
example my content:
$content = 'The speedy black wolf bounded over the lazy hound';
$patten = array('{the|a|}',{black|red|yellow}....);

Expect result after replace : $content = '{the|a|} speedy {black|red|yellow} wolf bounded over the lazy hound';
they will find 1 of some word in {} and if 1 of some word by | match, they will replace to the content.

thank you for this

Is there way to ignore spin for "first capital alphabet word" (e,g. names, country, etc.)?

hi
i love this scripts. is any ideas on how can it be implement with mysql data? like storing the synonyms in a database

more power

hi, if i want to calculate maximum number of my spintax combination can generate unique article how to do that?

Is there a way I could show all the possible variations?