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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 |
---|---|
348 | /** |
349 | * Filters the Media list table columns. |
350 | * |
351 | * @since 2.5.0 |
352 | * |
353 | * @param string[] $posts_columns An array of columns displayed in the Media list table. |
354 | * @param bool $detached Whether the list table contains media not attached |
355 | * to any posts. Default true. |
356 | */ |
357 | return apply_filters( 'manage_media_columns', $posts_columns, $this->detached ); |
358 | } |
359 |
|
360 | /** |
361 | * @return array |
362 | */ |
363 | protected function get_sortable_columns() { |
364 | return array( |
365 | 'title' => 'title', |
366 | 'author' => 'author', |