relative to absolute

Parsing html with regex is bad though.

Esta expresión regular permite detectar las variables que están declaradas dentro de una url o route del framework Flask, con esto lo único que queda es armar un loop que recorra las coincidencias y que las remplace por los valores adecuados

1.Tree of subdivisions may have up to 127 levels. 2.Each label may contain up to 63 characters. 3.The full domain name may not exceed the length of 253 characters in its textual representation. rfc1035 rfc1123 rfc2181

The special characters are ~!@#$%^&*()

Description here

username

Check for correctly formatted array of this type: array( array('name'=>'War and Peace', 'year'=>1865), array('name'=>'Different Seasons', 'year'=>1982), )

Check for correctly formatted array of this type: array('a', 'bb', 'ccccc',)

Check for correctly formatted array of this type: array(1,2,3,)

Easly to check tel:// or sms:// protocols.

Zero length negative lookbehind