Is this the default behavior or am i missing something over here?How can I check if a given string is a valid URL address? Surely a good start: msdn.microsoft.com/en-us/library/ff650303NB. The above page is retired, but the expressions in the table are essentially still valid for reference. :[0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])))|(?
Regular expressions can be used to perform all types of text search and text replace operations.
See the URL Standard if you’re looking to parse URLs in the same way that browsers do.
Assume that this regex will be used for a public URL shortener written in PHP, so URLs like shouldn’t pass (even though they’re technically valid).
in this portion of the regex [-a-z [email protected]:%_\ .~#? google.com) and if it validates enable a submit button. The script uses a stripped down regular expression from above for domain matching, which isn't strict about fake TLD.
&//=] there is a double slash, which doesn't seem necessary to me? This is taken from which is the library you should really use to do this. I thought that I would share my code for those who are looking to accomplish something similar.