Mega Code Archive

 

Categories / Php / Strings

 

Regular expressions using +, , and

Regexp                                              Result   preg_match("/[A-Z]+/", "123")                       False   preg_match("/[A-Z][A-Z0-9]+/i", "A123")             True   preg_match("/[0-9]?[A-Z]+/", "10GreenBottles")      True; matches "0G"   preg_match("/[0-9]?[A-Z0-9]*/i", "10GreenBottles")  True   preg_match("/[A-Z]?[A-Z]?[A-Z]*/", "")              True; zero or one match, then zero or one match, then zero or more means that an empty string matches