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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )
apply_filters( "hook_name", "what_to_filter" )
.Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
Line | Code |
---|---|
730 |
|
731 | /** |
732 | * Filters the columns displayed in the Posts list table. |
733 | * |
734 | * @since 1.5.0 |
735 | * |
736 | * @param string[] $post_columns An associative array of column headings. |
737 | * @param string $post_type The post type slug. |
738 | */ |
739 | $posts_columns = apply_filters( 'manage_posts_columns', $posts_columns, $post_type ); |
740 | } |
741 |
|
742 | /** |
743 | * Filters the columns displayed in the Posts list table for a specific post type. |
744 | * |
745 | * The dynamic portion of the hook name, `$post_type`, refers to the post type slug. |
746 | * |
747 | * Possible hook names include: |
748 | * |