This just checks for case insensitive first name, last name, or both.

Extract channel name from Asterisk channel line

In string find regular expression or data type with limiters (start and end or summary count of symbols)

1900 - 2015. Useful for Birthdates

Parse url with any complexity

Validates port numbers from 1 to 65535

just a a simple match for a mac address

2001-9999

word in sentense - true sentense has a word - true There is a word in the sentense - true Sentense wordless - false Sentense is empty - false words are in the sentense - false...

validate an IP v4

Найти числа, которые обозначают количество.

this extracts the table name in the from or join clause from SQL query

Matches french numbers (not special numbers like 115, 18). First matching group contains the right part without prefix (0, +33, 33, 033, or 0033).