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<?php function bool2str($bool) { if ($bool === false) { return 'FALSE'; } else { return 'TRUE'; } } class word { public int $symbol_id; public string $word; public string $language_code; public string $country_code = 'UND'; } $word1 = new word(); $word2 = new word(); echo (is_null($word1->$word)); echo null == null;
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