17 lines
428 B
Text
17 lines
428 B
Text
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<?php
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use Phpml\Tokenization\Tokenizer;
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class WhitespaceLowerTokenizer implements Tokenizer
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{
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public function tokenize(string $text): array
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{
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$substrings = preg_split('/[\pZ\pC]+/u', $text, -1, PREG_SPLIT_NO_EMPTY);
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if ($substrings === false) {
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throw new InvalidArgumentException('preg_split failed on: ' . $text);
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}
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return array_map('mb_strtolower', $substrings);
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}
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}
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