Quote Originally Posted by jdc20181 View Post
No, it don't do harm in fact it is benifitial, because professionally you may use more web language code than actual VB.NET when creating applications. After pickng up on vb.net I also picked up HTML5 CSS3 JS And minor bits of PHP
The difference there is that HTML, CSS and JS are often used in conjunction with VB, whereas PHP would usually be used instead of. Learning/knowing PHP won't inherently hurt a VB developer but any time spent on it is time not spent getting better at using VB and if you're learning both from scratch then, as Sitten Spynne says, you may actually hinder yourself by confusing between the two. Learning as many languages as you can is a good thing but I'd be inclined to concentrate on one at a time as much as you can.