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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 |
|---|---|
| 1998 | add_action( 'delete_attachment', '_delete_attachment_theme_mod' ); |
| 1999 | |
| 2000 | /** |
| 2001 | * Checks if a theme has been changed and runs 'after_switch_theme' hook on the next WP load |
| 2002 | * |
| 2003 | * @since 3.3 |
| 2004 | */ |
| 2005 | function check_theme_switched() { |
| 2006 | if ( false !== ( $old_theme = get_option( 'theme_switched' ) ) && !empty( $old_theme ) ) { |
| 2007 | do_action( 'after_switch_theme', $old_theme ); |
| 2008 | update_option( 'theme_switched', false ); |
| 2009 | } |
| 2010 | } |
| 2011 | |