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<?php error_reporting(-1); echo str_pad(__LINE__, 2, ' ', STR_PAD_LEFT), ': '; var_dump(filter_var('true', FILTER_VALIDATE_BOOLEAN)); echo str_pad(__LINE__, 2, ' ', STR_PAD_LEFT), ': '; var_dump(filter_var('TRUE', FILTER_VALIDATE_BOOLEAN)); echo str_pad(__LINE__, 2, ' ', STR_PAD_LEFT), ': '; var_dump(filter_var('on', FILTER_VALIDATE_BOOLEAN)); echo str_pad(__LINE__, 2, ' ', STR_PAD_LEFT), ': '; var_dump(filter_var('On', FILTER_VALIDATE_BOOLEAN)); echo str_pad(__LINE__, 2, ' ', STR_PAD_LEFT), ': '; var_dump(filter_var('1', FILTER_VALIDATE_BOOLEAN)); echo str_pad(__LINE__, 2, ' ', STR_PAD_LEFT), ': '; var_dump(filter_var('false', FILTER_VALIDATE_BOOLEAN)); echo str_pad(__LINE__, 2, ' ', STR_PAD_LEFT), ': '; var_dump(filter_var('FALSE', FILTER_VALIDATE_BOOLEAN)); echo str_pad(__LINE__, 2, ' ', STR_PAD_LEFT), ': '; var_dump(filter_var('off', FILTER_VALIDATE_BOOLEAN)); echo str_pad(__LINE__, 2, ' ', STR_PAD_LEFT), ': '; var_dump(filter_var('Off', FILTER_VALIDATE_BOOLEAN)); echo str_pad(__LINE__, 2, ' ', STR_PAD_LEFT), ': '; var_dump(filter_var('0', FILTER_VALIDATE_BOOLEAN)); echo str_pad(__LINE__, 2, ' ', STR_PAD_LEFT), ': '; var_dump(filter_var('', FILTER_VALIDATE_BOOLEAN)); echo str_pad(__LINE__, 2, ' ', STR_PAD_LEFT), ': '; var_dump(filter_var('true', FILTER_VALIDATE_BOOLEAN, FILTER_NULL_ON_FAILURE)); echo str_pad(__LINE__, 2, ' ', STR_PAD_LEFT), ': '; var_dump(filter_var('TRUE', FILTER_VALIDATE_BOOLEAN, FILTER_NULL_ON_FAILURE)); echo str_pad(__LINE__, 2, ' ', STR_PAD_LEFT), ': '; var_dump(filter_var('on', FILTER_VALIDATE_BOOLEAN, FILTER_NULL_ON_FAILURE)); echo str_pad(__LINE__, 2, ' ', STR_PAD_LEFT), ': '; var_dump(filter_var('On', FILTER_VALIDATE_BOOLEAN, FILTER_NULL_ON_FAILURE)); echo str_pad(__LINE__, 2, ' ', STR_PAD_LEFT), ': '; var_dump(filter_var('1', FILTER_VALIDATE_BOOLEAN, FILTER_NULL_ON_FAILURE)); echo str_pad(__LINE__, 2, ' ', STR_PAD_LEFT), ': '; var_dump(filter_var('false', FILTER_VALIDATE_BOOLEAN, FILTER_NULL_ON_FAILURE)); echo str_pad(__LINE__, 2, ' ', STR_PAD_LEFT), ': '; var_dump(filter_var('FALSE', FILTER_VALIDATE_BOOLEAN, FILTER_NULL_ON_FAILURE)); echo str_pad(__LINE__, 2, ' ', STR_PAD_LEFT), ': '; var_dump(filter_var('off', FILTER_VALIDATE_BOOLEAN, FILTER_NULL_ON_FAILURE)); echo str_pad(__LINE__, 2, ' ', STR_PAD_LEFT), ': '; var_dump(filter_var('Off', FILTER_VALIDATE_BOOLEAN, FILTER_NULL_ON_FAILURE)); echo str_pad(__LINE__, 2, ' ', STR_PAD_LEFT), ': '; var_dump(filter_var('0', FILTER_VALIDATE_BOOLEAN, FILTER_NULL_ON_FAILURE)); echo str_pad(__LINE__, 2, ' ', STR_PAD_LEFT), ': '; var_dump(filter_var('', FILTER_VALIDATE_BOOLEAN, FILTER_NULL_ON_FAILURE));

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