This pattern validates all the possible dates for all months in YYYY-MM-DD format. Due to limitations of regex it can not validate the dates of february for leap year. It will allow the date 29 for leap year too. Make sure to validate that yourself.

Tests a string to see if it fits the Base64 format.

matches floats: 1.0f 1.0F .0f .1F 1f 1F

match as long as not 5digit code

Splits text by a character which is not inside the quotes. Example: foo:"01":"02:03":"04:05:06":"07:08:09:10" ^^^ ^^^^ ^^^^^^^ ^^^^^^^^^^ ^^^^^^^^^^^^^

Begin with /* accept anything inside and finish with */

Reads C comments as this "/* Do test / and removes / */ parts and leaves only comment part

Checks whether a North American Numbering Plan (NANP) phone number is valid. (Matching numbers are not necessarily real.) However, it registers 299-911-9999 as OK, even though it's not valid.

updated

select and retrieve information form IRC client to client prefix

Simple Mobile Pattern

Validador de Data e Hora