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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 |
---|---|
6457 | $icon_dir = apply_filters( 'icon_dir', ABSPATH . WPINC . '/images/media' ); |
6458 |
|
6459 | /** |
6460 | * Filters the icon directory URI. |
6461 | * |
6462 | * @since 2.0.0 |
6463 | * |
6464 | * @param string $uri Icon directory URI. |
6465 | */ |
6466 | $icon_dir_uri = apply_filters( 'icon_dir_uri', includes_url( 'images/media' ) ); |
6467 |
|
6468 | /** |
6469 | * Filters the array of icon directory URIs. |
6470 | * |
6471 | * @since 2.5.0 |
6472 | * |
6473 | * @param string[] $uris Array of icon directory URIs keyed by directory absolute path. |
6474 | */ |
6475 | $dirs = apply_filters( 'icon_dirs', array( $icon_dir => $icon_dir_uri ) ); |