摘要：
function is_valid_email_address($email){ $qtext = '[^//x0d//x22//x5c//x80-//xff]'; $dtext = '[^//x0d//x5b-//x5d//x80-//xff]'; $atom = '[^//x00-//x20//x22//x28//x29//x2c//x2e//x3a-//x3c'. '//x3e//x40//x5b-//x5d//x7f-//xff]+'; $quoted_pair = '//x5c[//x00-//x7f]' 阅读全文
摘要：
1 select DATEDIFF(DAY,2010-01-06,2010-01-03)输出结果 32select GETDATE()输出结果 2011-02-28 14:57:45.137 即为当前的时间3select year('2010-02-01')输出结果 2010 阅读全文