El operador ^ cuando este operador se usa dentro de unos corchetes significa que se niega la expresión que se solicita si se usa sin los corchetes significa que asi debe de empezar una expresión dada

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validating names and short names

Extract phrases meaning "add X more of the previous item"

includes mandatory whitespace for UK postcodes credit goes to the original version, this is improved with mandatory whitespace.

Almost ready!!!

Check whether or not the SQL is dangerous!

valida dominio con una o dos extensiones. No admite @, ni www, ni http://

A postal code validation for Canada postal codes. Format can be: M4B 1T4 M4B1T4

For more background, refer to: http://codel10n.com/what-is-correct-locale-tag-en_us-vs-en-us/