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<?php var_dump(password_needs_rehash(null, PASSWORD_BCRYPT)); echo "\n"; var_dump(password_needs_rehash('$2y$10$S2j/mLdZIAK/MONvQU57zemRuFR53qW91EBX03nCfNcndAdfOfSnS', PASSWORD_BCRYPT)); echo "\n"; var_dump(password_needs_rehash("holladrio", PASSWORD_BCRYPT));

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