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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 |
---|---|
443 | public function column_default( $blog, $column_name ) { |
444 | /** |
445 | * Fires for each registered custom column in the Sites list table. |
446 | * |
447 | * @since 3.1.0 |
448 | * |
449 | * @param string $column_name The name of the column to display. |
450 | * @param int $blog_id The site ID. |
451 | */ |
452 | do_action( 'manage_sites_custom_column', $column_name, $blog['blog_id'] ); |
453 | } |
454 |
|
455 | /** |
456 | * |
457 | * @global string $mode |
458 | */ |
459 | public function display_rows() { |
460 | foreach ( $this->items as $blog ) { |
461 | $blog = $blog->to_array(); |