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There seems to be two separate question here: Should one do this? Not under most circumstances. Modifying third party extensions de-facto forks it with all implications of future maintenance and/or merging upstream (from original) changes. Without long term commitment it's just not practical and promptly falls apart, like in the cases you witnessed. ...


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If the original plugin has some form of GPL license, it is okay to manipulate it as long as you honour the license. So, there is nothing legally wrong with editing a plugin, a theme or even WP core. However, if you do this, you take over responsibility for updates from the original builders. In a way, you have become the author of a new plugin. If you don't ...


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In any foreach loop, the last value of the array being looped over remains after the end of the foreach loop. That is why one should actually always unset that value after the foreach loop is done. wp_list_pluck() is also just a basic foreach loop if $index_key is not passed. Also, as with any foreach loop, the last value of the array remains after the end ...



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