Source: http://stackoverflow.com/questions/36777840/how-to-validate-phone-number-in-laravel-5-2 Thanks to: Nady Shalaby

This pattern finds comments block in the source code.

This expression can be used for identifying if a string (such as a dialed number using a cloud based telephony service) matches one of the known North American US N11 Service Numbers. It will match if the number is in e.164 format or not, and only matches when the string begins and ends with the des...

A solution for capture set/unset/catch a value of param query of URLs. Here is a example code that applies this pattern in JS, but JS doesn't have support to lookbehind.

extract the package name and version name from the apt list --installed command