Regular expression for validating website

C# Regex class provides functions to implement regular expressions.The code example include how to use Regular Expressions in C# for Is Natural Number, Is Whole Number, Is Positive Number, Is Integer, Is Number, Is Alpha, and Is Alpha Numeric.

because you can pretty much split it in 3: find anything that starts with https?

:[0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])))|(?

:[0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5]))|(? :%[0-9a-f][0-9a-f]|[-a-z0-9\._~\x-\x\x-\x\x-\x\x-\x\x-\x\x-\x\x-\x\x-\x\x-\x\x-\x\x-\x\x-\x\x-\x\x-\x\x-\x\x-\x\x-\x!

)$/i Edit 7 March 2011: Because of the way PHP handles backslashes in quoted strings, these are unusable by default.

# auth requires @ )((([a-z0-9]\.|[a-z0-9][a-z0-9-]*[a-z0-9]\.)*(?

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