With only 4 PHP jobs at the current time in Erfurt, it might be worthwhile to check out job opportunities in similar topics. Opportunities in the subcategories Consultancy and Digital Marketing are at the current time the most common.
At this time, companies are showing an inclination for more mature applicants. Next to the traditional companies looking for PHP talent in this area, there is also one startup. Why not have a look at vacant positions in another country to compare and contrast opportunities. Just use the Explore tab.