Product Announcements and Alerts AppDynamics Support Advisories Current: Support Advisory: Applications Using PHP 8.1 May Not Start PDF Download PDF Download page Support Advisory: Applications Using PHP 8.1 May Not Start. Current page All pages Support Advisory: Applications Using PHP 8.1 May Not Start SummaryApplications using PHP 8.1 may not start when instrumented with AppDynamics PHP Agents because of a missing method definition in an included file. Affected SoftwareApplications using PHP 8.1 that are instrumented with AppDynamics PHP Agents.ImpactImpacted applications may not start.ResolutionUpgrade to PHP Agent 23.2.0. ×