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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 |
---|---|
215 | // Backwards compatibility with old load-page-new.php, load-page.php, |
216 | // and load-categories.php actions. |
217 | if ( $typenow == 'page' ) { |
218 | if ( $pagenow == 'post-new.php' ) |
219 | do_action( 'load-page-new.php' ); |
220 | elseif ( $pagenow == 'post.php' ) |
221 | do_action( 'load-page.php' ); |
222 | } elseif ( $pagenow == 'edit-tags.php' ) { |
223 | if ( $taxnow == 'category' ) |
224 | do_action( 'load-categories.php' ); |
225 | elseif ( $taxnow == 'link_category' ) |
226 | do_action( 'load-edit-link-categories.php' ); |
227 | } |
228 | } |
229 |
|
230 | if ( !empty($_REQUEST['action']) ) |
231 | do_action('admin_action_' . $_REQUEST['action']); |
232 |
|
233 | ?> |