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How to write a loop on zipfile which is stored in static resource?

Hi Guys,
I created one zip file and put in static resource which has images. I mentioned each image in VF PDF page and displayed. Here i want to display dynamically which means that today i put 4 images tomorrow i will put 6 images. So dont want to mention remianing images it will show all images automatically. Is it possible to write a loop on zipfile.
To reference a static resource using the $Resource global variable, provide the name of the static resource in an expression: {! $Resource[StaticResourceName] }. For example, if you have a getCustomLogo method that returns the name of an image uploaded as a static resource, reference it like this: <apex:image value="{!$Resource[customLogo]}"/>

Check this link for the sample code - https://developer.salesforce.com/docs/atlas.en-us.pages.meta/pages/pages_dynamic_vf_globals_resource.htm