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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 |
---|---|
1028 | * |
1029 | * Some examples of filter hooks generated here include: 'edit_attachment_per_page', |
1030 | * 'edit_post_per_page', 'edit_page_per_page', etc. |
1031 | * |
1032 | * @since 3.0.0 |
1033 | * |
1034 | * @param int $posts_per_page Number of posts to display per page for the given post |
1035 | * type. Default 20. |
1036 | */ |
1037 | $posts_per_page = apply_filters( "edit_{$post_type}_per_page", $posts_per_page ); |
1038 |
|
1039 | /** |
1040 | * Filter the number of posts displayed per page when specifically listing "posts". |
1041 | * |
1042 | * @since 2.8.0 |
1043 | * |
1044 | * @param int $posts_per_page Number of posts to be displayed. Default 20. |
1045 | * @param string $post_type The post type. |
1046 | */ |