Minimum PHP requirement for Xaraya 1.2

It's probably time to adjust the minimum PHP version required to install 
and run Xaraya 1x.

Currently, the required PHP version is 4.1.2 (released 27 Feb 2002), 
which is ancient.

Xaraya 1x should maintain support for PHP4, so the question becomes how 
far up that line we go.  We should adopt a policy of requiring the 
latest stable PHP version available two years prior to the expected date 
for a Xaraya release.  For 1.2.0 (which should be out in a few months), 
this means PHP 4.4.7, 3 May 2007).

A main concern is that we go at least to 4.2.2, which will allow us to 
address bug 1828 (PHP errors result in a browser redirection) by using 
the output buffer enhancements which became available in 4.2.0.

In reality however, PHP4 is dead, and probably not widely deployed now, 
so we could jump to the end of the line, 4.4.9 (7 Aug 2008).

Thoughts?


See also: http://www.xaraya.com/index.php/xarbb/topic/3461