src/Phrase.php
protected static function unglue(string $string, string $glue = null): array
    {
        $glue = ($glue === null) ? '-_ ' : $glue;
        return preg_split("/[" . $glue . "]+/", $string);
    }
protected static function unglue(string $string, string $glue = null): array
    {
        $glue = ($glue === null) ? '-_ ' : $glue;
        return preg_split("/[" . $glue . "]+/", $string);
    }
protected static function unglue ( string $ string , string $ glue = null ) : array { $ glue = ( $ glue === null ) ? '-_ ' : $ glue ; return preg_split ( "/[" . $ glue . "]+/" , $ string ) ; }
Given one or more characters as glue, separate a string into an array of strings.

@param string $string The string we are separating.
@param string|null $glue The characters that are combining the string.
@return string[] The segments of the string after being separated.
Given one or more characters as glue separate a string into an array of strings .