Regular expressions

email reg exp:
[a-zA-Z0-9._-]+@(([a-zA-Z0-9_-]{2,99}\.)+[a-zA-Z]{2,4})|((25[0-5]|2[0-4]\d|1\d\d|[1-9]\d|[1-9])\.(25[0-5]|2[0-4]\d|1\d\d|[1-9]\d|[1-9])\.(25[0-5]|2[0-4]\d|1\d\d|[1-9]\d|[1-9])\.(25[0-5]|2[0-4]\d|1\d\d|[1-9]\d|[1-9]))
url reg exp:
[a-zA-Z]{3,4}[sS]?://((([\w\d\-]+\.)+[ a-zA-Z]{2,4})|((25[0-5]|2[0-4]\d|1\d\d|[1-9]\d|[1-9])\.(25[0-5]|2[0-4]\d|1\d\d|[1-9]\d|[1-9])\.(25[0-5]|2[0-4]\d|1\d\d|[1-9]\d|[1-9])\.(25[0-5]|2[0-4]\d|1\d\d|[1-9]\d|[1-9])))((\?|/)[\w/=+#_~&:;%\-\?\.]*)
IP reg exp:
(25[0-5]|2[0-4]\d|1\d\d|[1-9]\d|[1-9])\.(25[0-5]|2[0-4]\d|1\d\d|[1-9]\d|[1-9])\.(25[0-5]|2[0-4]\d|1\d\d|[1-9]\d|[1-9])\.(25[0-5]|2[0-4]\d|1\d\d|[1-9]\d|[1-9])