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 tokenize
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<?php
declare (strict_types = 1);
namespace Phpml\Tokenization;
class WordTokenizer implements Tokenizer
{
    /**
     * @param string $text
     *
     * @return array
     */
    public function tokenize(string $text): array
    {
        $tokens = [];
        preg_match_all('/\w\w+/u', $text, $tokens);
        return $tokens[0];
    }
}