WP hooks navigation: Home/browse • Actions index • Filters index
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.
This hook occurs 4 times in this file.
| Line | Code |
|---|---|
| 463 | if ( empty($switched_stack) ) |
| 464 | $switched_stack = array(); |
| 465 | |
| 466 | $switched_stack[] = $blog_id; |
| 467 | |
| 468 | /* If we're switching to the same blog id that we're on, |
| 469 | * set the right vars, do the associated actions, but skip |
| 470 | * the extra unnecessary work */ |
| 471 | if ( $blog_id == $new_blog ) { |
| 472 | do_action( 'switch_blog', $blog_id, $blog_id ); |
| 473 | $switched = true; |
| 474 | return true; |
| 475 | } |
| 476 | |
| 477 | $wpdb->set_blog_id($new_blog); |
| 478 | $table_prefix = $wpdb->prefix; |
| 479 | $prev_blog_id = $blog_id; |
| 480 | $blog_id = $new_blog; |
| 481 | |
| Line | Code |
| 502 | wp_cache_init(); |
| 503 | if ( function_exists('wp_cache_add_global_groups') ) { |
| 504 | if ( is_array( $global_groups ) ) |
| 505 | wp_cache_add_global_groups( $global_groups ); |
| 506 | else |
| 507 | wp_cache_add_global_groups( array( 'users', 'userlogins', 'usermeta', 'user_meta', 'site-transient', 'site-options', 'site-lookup', 'blog-lookup', 'blog-details', 'rss', 'global-posts' ) ); |
| 508 | wp_cache_add_non_persistent_groups(array( 'comment', 'counts', 'plugins' )); |
| 509 | } |
| 510 | |
| 511 | do_action('switch_blog', $blog_id, $prev_blog_id); |
| 512 | $switched = true; |
| 513 | return true; |
| 514 | } |
| 515 | |
| 516 | /** |
| 517 | * Restore the current blog, after calling switch_to_blog() |
| 518 | * |
| 519 | * @see switch_to_blog() |
| 520 | * @since MU |
| Line | Code |
| 526 | |
| 527 | if ( !$switched ) |
| 528 | return false; |
| 529 | |
| 530 | if ( !is_array( $switched_stack ) ) |
| 531 | return false; |
| 532 | |
| 533 | $blog = array_pop( $switched_stack ); |
| 534 | if ( $blog_id == $blog ) { |
| 535 | do_action( 'switch_blog', $blog, $blog ); |
| 536 | /* If we still have items in the switched stack, consider ourselves still 'switched' */ |
| 537 | $switched = ( is_array( $switched_stack ) && count( $switched_stack ) > 0 ); |
| 538 | return true; |
| 539 | } |
| 540 | |
| 541 | $wpdb->set_blog_id($blog); |
| 542 | $prev_blog_id = $blog_id; |
| 543 | $blog_id = $blog; |
| 544 | $table_prefix = $wpdb->prefix; |
| Line | Code |
| 566 | wp_cache_init(); |
| 567 | if ( function_exists('wp_cache_add_global_groups') ) { |
| 568 | if ( is_array( $global_groups ) ) |
| 569 | wp_cache_add_global_groups( $global_groups ); |
| 570 | else |
| 571 | wp_cache_add_global_groups( array( 'users', 'userlogins', 'usermeta', 'user_meta', 'site-transient', 'site-options', 'site-lookup', 'blog-lookup', 'blog-details', 'rss', 'global-posts' ) ); |
| 572 | wp_cache_add_non_persistent_groups(array( 'comment', 'counts', 'plugins' )); |
| 573 | } |
| 574 | |
| 575 | do_action('switch_blog', $blog_id, $prev_blog_id); |
| 576 | |
| 577 | /* If we still have items in the switched stack, consider ourselves still 'switched' */ |
| 578 | $switched = ( is_array( $switched_stack ) && count( $switched_stack ) > 0 ); |
| 579 | return true; |
| 580 | } |
| 581 | |
| 582 | /** |
| 583 | * Check if a particular blog is archived. |
| 584 | * |