add_meta_box() – Adds a meta box to one or more screens. WP Function.
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![wordpress ] add_meta_box() / remove_meta_box() | dsin](https://dsin.files.wordpress.com/2018/08/post-new.png?w=628 "wordpress ] add_meta_box() / remove_meta_box() | dsin")
wordpress ] add_meta_box() / remove_meta_box() | dsin
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wordpress の管理画面に入力項目を追加する（theme拡張/add_meta_box) - Qiita
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add_meta_box() – Adds a meta box to one or more screens. WP Function.
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