I'm trying to write a simple regex for a string that contains a dot (.) AND doesn't contain @.
I managed to do this like this:
(^(?!.*@).*\..*$)
and it works! But I'm getting an error:
'Value "/(^(?!.*@).*\..*$)" must be a valid regular expression. Details: invalid or unsupported Perl syntax.'
I've searched and found out that the issue is with the negation part - "?!". Trying to change the expression to work with ^ but with no luck.
Would appriciate your help, thanks.
CodePudding user response：
You can use a regex that does not rely on lookarounds:
^[^@.]*\.[^@]*$
Or, if you have trouble with finding the right amount of escaping backslashes:
^[^@.]*[.][^@]*$
Details:
^- start of string[^@.]*- zero or more chars other than a.and@\./[.]- a mere dot char[^@]*- zero or more chars other than a@char$- end of string.