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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 |
---|---|
3509 | * @since 2.8.0 |
3510 | * @since 5.8.0 The `$scheme` parameter was added. |
3511 | * |
3512 | * @param string $url The complete URL to the includes directory including scheme and path. |
3513 | * @param string $path Path relative to the URL to the wp-includes directory. Blank string |
3514 | * if no path is specified. |
3515 | * @param string|null $scheme Scheme to give the includes URL context. Accepts |
3516 | * 'http', 'https', 'relative', or null. Default null. |
3517 | */ |
3518 | return apply_filters( 'includes_url', $url, $path, $scheme ); |
3519 | } |
3520 |
|
3521 | /** |
3522 | * Retrieves the URL to the content directory. |
3523 | * |
3524 | * @since 2.6.0 |
3525 | * |
3526 | * @param string $path Optional. Path relative to the content URL. Default empty. |
3527 | * @return string Content URL link with optional path appended. |