lookahead

Regex pattern for Apache log

this regex is able to validate a date (format dd.mm.yyyy) in every state of user typing. i use it to ensure that the user isn't able to type in an invalid date at all (except from a leap year check which is done afterwards) The regex also makes assumptions of 'missed' separators so 1234 is captured...

Testing (delete)

Replaces preceeding directory with / when ../ is used.

(?=.*[A-Z]) # must contain 1 uppercase letter (?=.*[0-9]) # must contain 1 digit (?!.\n) # must not contain a newline character (?!.*\s) # must not contain any whitespace characters (?=.*[!$#+@%&]) # nust contain one of these symbols .{8,} # match a...

splits into command arguments: spaces split quotes keep spaced texts together \" escapes the quote

matches all positive or negative float or integers

Regex for validating Nigerian phone numbers using all mobile prefixes in the country

Validates DateTime of format YYYYMMDDhhmmss including Leap Year

validate email address

seperates url path and query

Will only capture patterns matching 4 levels, found at the beginning of a line if /gm tag is used

http://stackoverflow.com/questions/34474298/regex-match-pattern-with-prefixed-string/34474387#34474325