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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 |
|---|---|
| 1391 | |
| 1392 | if ( !$lock = get_post_meta( $post->ID, '_edit_lock', true ) ) |
| 1393 | return false; |
| 1394 | |
| 1395 | $lock = explode( ':', $lock ); |
| 1396 | $time = $lock[0]; |
| 1397 | $user = isset( $lock[1] ) ? $lock[1] : get_post_meta( $post->ID, '_edit_last', true ); |
| 1398 | |
| 1399 | /** This filter is documented in wp-admin/includes/ajax-actions.php */ |
| 1400 | $time_window = apply_filters( 'wp_check_post_lock_window', 150 ); |
| 1401 | |
| 1402 | if ( $time && $time > time() - $time_window && $user != get_current_user_id() ) |
| 1403 | return $user; |
| 1404 | return false; |
| 1405 | } |
| 1406 | |
| 1407 | /** |
| 1408 | * Mark the post as currently being edited by the current user |
| 1409 | * |