Forum Moderators: phranque
Been reading regex tutorials and examples for hours. I'm sure it will be really simple - once it gets through my thick skull, but I'm lost after:
^aaa\.bb\.(6[4-9]
Thanks!
^aaa\.bb\.(6[4-9]¦[7-9][0-9]¦1[01][0-9]¦12[0-7])\.
Jim
what is the period (.) on the end for?
You could leave it off in this case because the previous octet is expressed in three digits, but I do it out of habit to avoid serious problems if the previous octet is only one or two digits.
To show what I mean, take the pattern
^123\.45\.67
That's OK, because "67" must be the whole octet, since "670" is greater than 255 and would be invalid.
But take the pattern:
^54\.32\.1
That will match 54.32.1, but it will also match 54.32.10 or 54.32.101, and all three are valid! :o
Throwing the dot on the end forces it to stop matching after the specified number of digits.
Jim
