function Token::scan

Builds a list of all token-like patterns that appear in the text.

Parameters

string $text: The text to be scanned for possible tokens.

Return value

array An associative array of discovered tokens, grouped by type.

1 call to Token::scan()

Token::doReplace in core/lib/Drupal/Core/Utility/Token.php

Replaces all tokens in a given string with appropriate values.

File

core/lib/Drupal/Core/Utility/Token.php, line 291

Class

Token

Drupal placeholder/token replacement system.

Namespace

Drupal\Core\Utility

Code

public function scan(string $text) {
    // Matches tokens with the following pattern: [$type:$name]
    // $type and $name may not contain [ ] characters.
    // $type may not contain : or whitespace characters, but $name may.
    preg_match_all('/
      \\[             # [ - pattern start
      ([^\\s\\[\\]:]+)  # match $type not containing whitespace : [ or ]
      :              # : - separator
      ([^\\[\\]]+)     # match $name not containing [ or ]
      \\]             # ] - pattern end
      /x', $text, $matches);
    $types = $matches[1];
    $tokens = $matches[2];
    // Iterate through the matches, building an associative array containing
    // $tokens grouped by $types, pointing to the version of the token found in
    // the source text. For example, $results['node']['title'] = '[node:title]';
    $results = [];
    for ($i = 0; $i < count($tokens); $i++) {
        $results[$types[$i]][$tokens[$i]] = $matches[0][$i];
    }
    return $results;
}