youtube id 17 matches

Validates a date with ISO 8601 format. Source: http://www.pelagodesign.com/blog/2009/05/20/iso-8601-date-validation-that-doesnt-suck/

Can grab all kinds of valid twitch URLs.

white space before punctuations, outside script and code tags

This regex fetch only the data between content in curly braces (first occurrence, use preg_match_all in php, for all occurrences). This is useful for bad JSON files with wrong format or text between.

This pattern matches the US Postal Code format and captures the seperate parts; basic and +4.

This pattern matches all the Unicode characters that are not allowed in an XML document. It's based on the Wikipedia article "Valid characters in XML".

1/Jul/2013 03:27:12

must match: selection/nl/example.xml selection/example.xml selection/blabla.txt selection/es/ ...

Italian VAT

tests for valid social security numbers according to the social security administration. more specifically: -disallows a group to have all 0s -disallows first group to have all 6s -disallows a ssn to begin with 9 note that this does not test for issued ssn's. that would be impossible to implement h...

validates strings in time format HH:mm with hour in 24h format. only accepts up to 23:59

capture Nth character from string, 3 times

Extract resource location, name and query parameters from a URL