I'm looking for some advice on getting back into a quant career. I worked for less than a year as a quant after completing a PhD in math. It was easily the best job I've had. The combination of modeling and programming was a great fit. Since that time I've completed a masters in economics and worked in academia. I am familiar with C++ but could use a refresher. I'm working as a PHP developer at the moment and feel the need to spend another 6-12 months in my current job. During that time, I would like to improve and refresh my C++ and prepare for a quant career. I'm looking for ideas on how to best accomplish this purpose.