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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 |
---|---|
6323 | $icon_dir = apply_filters( 'icon_dir', ABSPATH . WPINC . '/images/media' ); |
6324 |
|
6325 | /** |
6326 | * Filters the icon directory URI. |
6327 | * |
6328 | * @since 2.0.0 |
6329 | * |
6330 | * @param string $uri Icon directory URI. |
6331 | */ |
6332 | $icon_dir_uri = apply_filters( 'icon_dir_uri', includes_url( 'images/media' ) ); |
6333 |
|
6334 | /** |
6335 | * Filters the array of icon directory URIs. |
6336 | * |
6337 | * @since 2.5.0 |
6338 | * |
6339 | * @param string[] $uris Array of icon directory URIs keyed by directory absolute path. |
6340 | */ |
6341 | $dirs = apply_filters( 'icon_dirs', array( $icon_dir => $icon_dir_uri ) ); |