001+ PNG compression test: libpng warning: Application was compiled with png.h from libpng-1.6.6
001- PNG compression test: ok
002+ libpng warning: Application is running with png.c from libpng-1.2.49
003+
004+ Warning: imagepng(): gd-png: fatal libpng error: Incompatible libpng version in application and library in %s/pngcomp.php on line 8
005+ Segmentation fault (core dumped)