One of the challenges of building your site, plugin, or theme on top of the WordPress application is having to stay up-to-date with all of the changes that get folded into the WordPress core application code.
These changes are typically documented in the Codex and provide good examples of what was changed and how to update your code. Case in point: the register_sidebar_widget function was deprecated and replaced with the wp_register_sidebar_widget function.
Using these two functions as an example, here’s the typical process you can use to ensure that you keep your code current.
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