Legacy ImageMagick Discussions Archive

ImageMagick-6.5.9-0-Q16-windows-dll
php version 5.2.4
return empty png image 1x1px

what could be the problem?

you have to tell it the fill color for the line

convert -size 80x100 xc:white -fill black -draw "line 10,10 70,90" line.bmp


you also were not using proper hyphens, possible long or short hyphens rather than normal hyphens (at least that is what I found when I cut and pasted your command)