Returns a list of tokens that begin with a specific prefix.
Used to extract a group of 'chained' tokens (such as [node:author:name]) from the full list of tokens found in text. For example:
$data = array(
'author:name' => '[node:author:name]',
'title' => '[node:title]',
'created' => '[node:created]',
);
$results = Token::findWithPrefix($data, 'author');
$results == array(
'name' => '[node:author:name]',
);
array $tokens: A keyed array of tokens, and their original raw form in the source text.
string $prefix: A textual string to be matched at the beginning of the token.
string $delimiter: (optional) A string containing the character that separates the prefix from the rest of the token. Defaults to ':'.
array An associative array of discovered tokens, with the prefix and delimiter stripped from the key.
public function findWithPrefix(array $tokens, $prefix, $delimiter = ':') {
$results = array();
foreach ($tokens as $token => $raw) {
$parts = explode($delimiter, $token, 2);
if (count($parts) == 2 && $parts[0] == $prefix) {
$results[$parts[1]] = $raw;
}
}
return $results;
}