Description:
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I try to run nextcloud using Tomcat. In the configuration for the CGIServlet I set /usr/bin/php5 as executable.
I connect my web browser to 127.0.0.1:8086/nextcloud/index.php.

This executes /usr/bin/php5 /var/www/default/nextcloud/index.php.

The CGIServlet sets the environment variable SCRIPT_NAME correctly to /nextcloud/index.php, but the php interpreter changes the variable to /var/www/default/nextcloud/index.php, what makes nextcloud throw an exception.

I found no way to prevent php from changing SCRIPT_NAME, and using the already set value instead.

Test script:
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What I think how the CGIServlet should be configured in web.xml:

   <servlet> 
      <servlet-name>php-cgi</servlet-name> 
      <servlet-class>org.apache.catalina.servlets.CGIServlet</servlet-class> 
      <init-param>
        <param-name>executable</param-name>
        <param-value>/usr/bin/php5</param-value>
      </init-param>
   </servlet>

   <servlet-mapping> 
      <servlet-name>php-cgi</servlet-name> 
      <url-pattern>*.php</url-pattern> 
   </servlet-mapping>