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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 |
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247 | /** |
248 | * Filter the Media list table columns. |
249 | * |
250 | * @since 2.5.0 |
251 | * |
252 | * @param array $posts_columns An array of columns displayed in the Media list table. |
253 | * @param bool $detached Whether the list table contains media not attached |
254 | * to any posts. Default true. |
255 | */ |
256 | $posts_columns = apply_filters( 'manage_media_columns', $posts_columns, $this->detached ); |
257 |
|
258 | return $posts_columns; |
259 | } |
260 |
|
261 | protected function get_sortable_columns() { |
262 | return array( |
263 | 'title' => 'title', |
264 | 'author' => 'author', |
265 | 'parent' => 'parent', |