Removes formatting chars from string like \n, \r, \t and etc

Telefone com DDD entre parenteces ou sem com e sem traço ou sem DDD

A regex to parse regexs

If string contains special chars no match. Blank space is safe. It will accept blank spaces.

Get Month and Year from different date format

Removes all blank lines. PHP: trim(preg_replace("/(^[\r\n]|[\r\n]+)[\s\t][\r\n]+/", "\n", $string)); You have replace with a newline char to break non-blank lines. This also leaves a single trailing newline, easily removed with trim($string); if needed.

Recebe os formatos: 1: dd xxxxx-xxxx 2: (dd) xxxxx-xxxx 3: ddxxxxx-xxxx 4: (dd)xxxxx-xxxx

Match C-style comments