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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 |
|---|---|
| 2326 | |
| 2327 | if ( 'relative' == $scheme ) { |
| 2328 | $url = ltrim( preg_replace( '#^\w+://[^/]*#', '', $url ) ); |
| 2329 | if ( $url !== '' && $url[0] === '/' ) |
| 2330 | $url = '/' . ltrim($url , "/ \t\n\r\0\x0B" ); |
| 2331 | } else { |
| 2332 | $url = preg_replace( '#^\w+://#', $scheme . '://', $url ); |
| 2333 | } |
| 2334 | |
| 2335 | return apply_filters( 'set_url_scheme', $url, $scheme, $orig_scheme ); |
| 2336 | } |
| 2337 | |
| 2338 | /** |
| 2339 | * Get the URL to the user's dashboard. |
| 2340 | * |
| 2341 | * If a user does not belong to any site, the global user dashboard is used. If the user belongs to the current site, |
| 2342 | * the dashboard for the current site is returned. If the user cannot edit the current site, the dashboard to the user's |
| 2343 | * primary blog is returned. |
| 2344 | * |