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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 |
---|---|
956 | * |
957 | * This hook only fires if the current post type is non-hierarchical, |
958 | * such as posts. |
959 | * |
960 | * @since 1.5.0 |
961 | * |
962 | * @param string $column_name The name of the column to display. |
963 | * @param int $post_id The current post ID. |
964 | */ |
965 | do_action( 'manage_posts_custom_column', $column_name, $post->ID ); |
966 | } |
967 |
|
968 | /** |
969 | * Fires for each custom column of a specific post type in the Posts list table. |
970 | * |
971 | * The dynamic portion of the hook name, `$post->post_type`, refers to the post type. |
972 | * |
973 | * @since 3.1.0 |
974 | * |