if you want to validate user mail

validate a url with or without query string and scheme

Simple website validation for your casual usage

This regular expression removes all special characters including whitespaces which are allowed in windows path name, file name and folder name.

replace-last-comma with semicolon similar to http://stackoverflow.com/questions/3829483/how-to-replace-last-occurrence-of-characters-in-a-string-using-javascript

replace-last-comma with semicolon similar to http://stackoverflow.com/questions/3829483/how-to-replace-last-occurrence-of-characters-in-a-string-using-javascript

Text to sentence is easy, but not when there are URLs or website names inside the text.

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)

Parse url with any complexity

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...

Найти числа, которые обозначают количество.

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