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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 |
---|---|
5190 | $icon_dir = apply_filters( 'icon_dir', ABSPATH . WPINC . '/images/media' ); |
5191 |
|
5192 | /** |
5193 | * Filter the icon directory URI. |
5194 | * |
5195 | * @since 2.0.0 |
5196 | * |
5197 | * @param string $uri Icon directory URI. |
5198 | */ |
5199 | $icon_dir_uri = apply_filters( 'icon_dir_uri', includes_url( 'images/media' ) ); |
5200 |
|
5201 | /** |
5202 | * Filter the list of icon directory URIs. |
5203 | * |
5204 | * @since 2.5.0 |
5205 | * |
5206 | * @param array $uris List of icon directory URIs. |
5207 | */ |
5208 | $dirs = apply_filters( 'icon_dirs', array( $icon_dir => $icon_dir_uri ) ); |