this regular expression can be used for validating id

This regex will detect . any number of times between numbers

Country code 1

Covers Latin-1 Supplement Latin Extended-A Latin Extended-B Greek and Coptic

get the notice or deprecated from php on your content

A way to match the last URL argument that allows arguments to contain any characters except '#' and '/'. Assumes that URL argument separator is '/' and that the list starts with '#'. Clearly, not universal!

email validation

Match any alphanumeric string in any language. White spaces are allowed. (Usefull for ECMAScript 5)