我正在寻找一个正则表达式验证一个电子邮件,以了解它是否有效.我有以下：
def is_a_valid_email?(email)
email_regex = %r{
^ # Start of string
[0-9a-z] # First character
[0-9a-z.+]+ # Middle characters
[0-9a-z] # Last character
@ # Separating @ character
[0-9a-z] # Domain name begin
[0-9a-z.-]+ # Domain name middle
[0-9a-z] # Domain name end
$# End of string
}xi # Case insensitive
(email =~ email_regex)
end
上述问题是XXX_XXX@Xxx.com不应该返回有效.对更好的正则表达式的任何想法或建议？
谢谢