There aren't very many PHP vacancies in Baden-Württemberg; the current count is just 5. Have you tried neighbouring regions? Most PHP vacancies fall into the main categories Management and Executive Management. The most cited topics for these jobs are Web Development, MySQL, and WordPress. Are you familiar with them?
For PHP vacancies, senior staff are chiefly sought after. 4 jobs posted on Jobspotting by companies in this field are for senior positions. Can't find a job offer that works for you? Try out Jobspotting to have it find you!