Entry

Can I run php4 and php5 together as Apache modules? What about on IIS?

May 10th, 2004 20:58
Philip Olson, Grzegorz Tlołka,

Yes, it's mostly possible.  Here are some articles on the subject:
Apache - Three articles:
http://www.schlitt.info/applications/blog/archives/83_How_to_run_PHP4_an
d_PHP_5_parallel.html
http://wiki.coggeshall.org/Main/RunningPHP4AndPHP5Concurrently
http://www.circle.ch/blog/p1387.html
IIS - One article
http://miasmatik.maladoc.org/doc.php?d=12
Also, note that it's easy to create/run different CGI or CLI versions 
as they're simply compiled binaries.