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Regular Expression Details

Title Test Find Strict Username with few separators
Expression
^(?![-_.0-9])(?!.*[-_.][-_.])(?!.*[-_.]$)[A-Za-z0-9-_.]+$
Description
Provide username constraint that allow character and numeric and also perion hyphen and underscore, but it only allows alphabet at the begin, and alphanumeric at the end. also user may not user more than one sign side by side
Matches
my.username | u-s-e-r.n_a_m_e | xyz724 | c1
Non-Matches
9abc | x..z | a._-c | -a | c54_
Author Rating: Not yet rated. Hassan Faghihi
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