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This plugin adds a meta box to upload multiple images for posts and pages. You can enable it for custom post types also, please see installation instructions.
This function can be called from any template file to get attached images for the page/post being viewed.
It returns an array of the attached image URL.
It take only one argument:
post_id (integer) to get images linked to a specific post
http://www.example.com/image-1.png
[1] => http://www.example.com/image-2.png
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