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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 |
|---|---|
| 2609 | /** |
| 2610 | * Filter the URL to the content directory. |
| 2611 | * |
| 2612 | * @since 2.8.0 |
| 2613 | * |
| 2614 | * @param string $url The complete URL to the content directory including scheme and path. |
| 2615 | * @param string $path Path relative to the URL to the content directory. Blank string |
| 2616 | * if no path is specified. |
| 2617 | */ |
| 2618 | return apply_filters( 'content_url', $url, $path); |
| 2619 | } |
| 2620 | |
| 2621 | /** |
| 2622 | * Retrieve the url to the plugins directory or to a specific file within that directory. |
| 2623 | * You can hardcode the plugin slug in $path or pass __FILE__ as a second argument to get the correct folder name. |
| 2624 | * |
| 2625 | * @since 2.6.0 |
| 2626 | * |
| 2627 | * @param string $path Optional. Path relative to the plugins url. |