001+ PNG to GD1 conversion: libpng warning: Application was compiled with png.h from libpng-1.5.13
002+ libpng warning: Application is running with png.c from libpng-1.2.50
003+
004+ Warning: imagecreatefrompng(): gd-png: fatal libpng error: Incompatible libpng version in application and library in %s/png2gd.php on line 5
001- PNG to GD1 conversion: ok
002- PNG to GD2 conversion: ok
003- GD1 to PNG conversion: ok
004- GD2 to PNG conversion: ok