load_template and get_template_part in WordPress
A closer look at how WordPress loads template files, why get_template_part is useful, and when helper functions beat raw PHP includes.
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Understanding load_template() and get_template_part() in WordPress
See how WordPress template loading works internally and why get_template_part(), get_header(), and load_template() are better than plain PHP includes.
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Export an Array to CSV in Pure PHP Without a Plugin
A simple PHP method for exporting array data to a CSV file without relying on PHPExcel or a WordPress plugin.
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Create a Paginated User List in WordPress with paginate_links()
Use get_users() together with paginate_links() to build a paginated user list in WordPress and avoid loading every user on one page.
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Save Remote Files and Images to the WordPress Media Library
How to download remote files with WordPress and save them into the Media Library using download_url(), media_handle_sideload(), and media_sideload_image().
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Upload Images from the Front End and Attach Them to Posts in WordPress
Use WordPress media_handle_upload() from the front end to upload one or more images and attach them to a post.
