Kolkata is one of the most Important cities where IT business in India has boomed. There are about 1500 IT companies in kolkata which work on PHP/MySql plateform.
Kolkata boasts of several prestigous engineering coleges from where thousands of students comes of passing each year.
They look for job opprtunites in their home city first. And most easy field to get job is on PHP/MYSQL. And its not very difficult to get PHP/MySql jobs in Kolkata.
There are many PHP/MySql training centers in Kolkata where advance and industrial training in provided. And after getting industry level of training they get job in the IT companies.
http://www.acesoftech.com/web-development-course is one of the advanced and Industrial PHP Web Development course in Kolkata whichi is provided by Acesoftech Academy
You can also visit this link for PHP Training center in Kolkata