resizeImage

Resizes src_img proportionally to fit within max_width and max_height limits if it is too large. If GD2 is present, it'll use it to achieve better quality. It saves the new image to destination_filename, as preferred_format if possible, default is jpeg. uses Imagemagick (IMagick or MagickWand extension) or GD

Open source code

Parameters Summary
`resource`	`$src_img`
`string`	`$destName`
`int`	`$src_width`
`int`	`$src_height`
`int`	`$max_width`
`int`	`$max_height`
`bool`	`$force_resize = false`
`int`	`$preferred_format = 0`