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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 |
|---|---|
| 2299 | |
| 2300 | if ( 'relative' == $scheme ) { |
| 2301 | $url = ltrim( preg_replace( '#^\w+://[^/]*#', '', $url ) ); |
| 2302 | if ( $url !== '' && $url[0] === '/' ) |
| 2303 | $url = '/' . ltrim($url , "/ \t\n\r\0\x0B" ); |
| 2304 | } else { |
| 2305 | $url = preg_replace( '#^\w+://#', $scheme . '://', $url ); |
| 2306 | } |
| 2307 | |
| 2308 | return apply_filters( 'set_url_scheme', $url, $scheme, $orig_scheme ); |
| 2309 | } |
| 2310 | |
| 2311 | /** |
| 2312 | * Get the URL to the user's dashboard. |
| 2313 | * |
| 2314 | * If a user does not belong to any site, the global user dashboard is used. If the user belongs to the current site, |
| 2315 | * the dashboard for the current site is returned. If the user cannot edit the current site, the dashboard to the user's |
| 2316 | * primary blog is returned. |
| 2317 | * |