Which things they learn in 2 years as PHP Developer?

With 2 years of experience, you've probably made all the major beginner mistakes and learned what not to do in most situations. Beginners rush to find out how to do something but they don't know enough to know NOT to do something a certain way and WHY they shouldn't do something that certain way.

Although PHP's syntax is familiar and similar to C/Java; it's function names are, in my opinion, difficult to remember, as they are somewhat unique. Thus, PHP is somewhat of a difficult language to memorize and use. Even after years and years of practice, I often use references like php.net, to double check that I'm using the correct function name and optimal option.

Hiring companies often have other requirements other than years of language experience; many have educational or hands-on experience requirements. These parameters are namely set, to help ensure that the candidate(s) have enough practice in said language, follow best practices, and have less to learn as they achieved the desired practice levels and familiarity of the language's nomenclature, syntax, logic, and functionality. I also find it common that PHP requires the knowledge of corresponding server-side and client-side technologies as well: HTML, CSS, JS/JQuery/AJAX, PHP, mySQL, and CMS's such as Wordpress. Many times I see these requirements in combination. Thus, PHP knowledge is often "not enough". To develop in PHP, I recommend studying the aforementioned technologies concurrently with PHP.

Hey! NerdsOfTech How much deep-in Other Technologies?

At the 2 years of experience, the person might have core knowledge on the language as well he might be worked on multiple projects and got experience to work independently or with team.

Thanks to everyone who's contribute there :)