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To save our bandwidth, we show only a snippet of code around each occurence of the hook. View complete file in SVN (without highlighting).
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 |
|---|---|
| 1214 | * Filters the list table sortable columns for a specific screen. |
| 1215 | * |
| 1216 | * The dynamic portion of the hook name, `$this->screen->id`, refers |
| 1217 | * to the ID of the current screen. |
| 1218 | * |
| 1219 | * @since 3.1.0 |
| 1220 | * |
| 1221 | * @param array $sortable_columns An array of sortable columns. |
| 1222 | */ |
| 1223 | $_sortable = apply_filters( "manage_{$this->screen->id}_sortable_columns", $sortable_columns ); |
| 1224 | |
| 1225 | $sortable = array(); |
| 1226 | foreach ( $_sortable as $id => $data ) { |
| 1227 | if ( empty( $data ) ) { |
| 1228 | continue; |
| 1229 | } |
| 1230 | |
| 1231 | $data = (array) $data; |
| 1232 | if ( ! isset( $data[1] ) ) { |