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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 |
---|---|
217 | exit(); |
218 | } else { |
219 | do_action("load-$pagenow"); |
220 | // Backwards compatibility with old load-page-new.php, load-page.php, |
221 | // and load-categories.php actions. |
222 | if ( $typenow == 'page' ) { |
223 | if ( $pagenow == 'post-new.php' ) |
224 | do_action( 'load-page-new.php' ); |
225 | elseif ( $pagenow == 'post.php' ) |
226 | do_action( 'load-page.php' ); |
227 | } elseif ( $pagenow == 'edit-tags.php' ) { |
228 | if ( $taxnow == 'category' ) |
229 | do_action( 'load-categories.php' ); |
230 | elseif ( $taxnow == 'link_category' ) |
231 | do_action( 'load-edit-link-categories.php' ); |
232 | } |
233 | } |
234 |
|
235 | if ( !empty($_REQUEST['action']) ) |