If you are upgrading to PHP-5.3.1 (released 2009-11-19), there is a bug fix
that slightly affects PHPlot when using TrueType Font (TTF) titles. The
TrueType font bounding box now correctly accounts for descenders. This can
result in PHPlot's calculated margins being slightly larger with PHP-5.3.1
than with 5.3.0. (It is a small difference, seen when I toggle between before-
upgrade and after-upgrade test image files.)
If you are upgrading to PHP-5.3.1 (released 2009-11-19), there is a bug fix
that slightly affects PHPlot when using TrueType Font (TTF) titles. The
TrueType font bounding box now correctly accounts for descenders. This can
result in PHPlot's calculated margins being slightly larger with PHP-5.3.1
than with 5.3.0. (It is a small difference, seen when I toggle between before-
upgrade and after-upgrade test image files.)
The fixed bugs are 48732 and 48801. The problem was introduced in PHP-5.3.0
and PHP-5.2.10. See: (https://sourceforge.net/projects/phplot/forums/forum/46
382/topic/3324668). It is fixed in PHP-5.3.1 and PHP-5.2.11. (For some
reason, it didn't make it into the PHP-5.3.1 release NEWS file.)