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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 |
|---|---|
| 1739 | * |
| 1740 | * @since 5.4.0 |
| 1741 | */ |
| 1742 | function do_favicon() { |
| 1743 | /** |
| 1744 | * Fires when serving the favicon.ico file. |
| 1745 | * |
| 1746 | * @since 5.4.0 |
| 1747 | */ |
| 1748 | do_action( 'do_faviconico' ); |
| 1749 | |
| 1750 | wp_redirect( get_site_icon_url( 32, includes_url( 'images/w-logo-blue-white-bg.png' ) ) ); |
| 1751 | exit; |
| 1752 | } |
| 1753 | |
| 1754 | /** |
| 1755 | * Determines whether WordPress is already installed. |
| 1756 | * |
| 1757 | * The cache will be checked first. If you have a cache plugin, which saves |