I've tried Quercus and PHP/Java Bridge
PHP/Java Bridge complains "Cannot access /java within the current web application. Please explode it: Unzip the application .war file into a directory and deploy the directory instead."
and Quercus complains "Deployment content /usr/share/wildfly/standalone/deployments/quercus-4.0.37.war appears to be incomplete and is not progressing toward completion. This content cannot be auto-deployed."