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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 |
|---|---|
| 1873 | |
| 1874 | if ( 'relative' == $scheme ) |
| 1875 | $url = preg_replace( '#^.+://[^/]*#', '', $url ); |
| 1876 | elseif ( 'http' != $scheme ) |
| 1877 | $url = str_replace( 'http://', "$scheme://", $url ); |
| 1878 | |
| 1879 | if ( !empty( $path ) && is_string( $path ) && strpos( $path, '..' ) === false ) |
| 1880 | $url .= '/' . ltrim( $path, '/' ); |
| 1881 | |
| 1882 | return apply_filters( 'home_url', $url, $path, $orig_scheme, $blog_id ); |
| 1883 | } |
| 1884 | |
| 1885 | /** |
| 1886 | * Retrieve the site url for the current site. |
| 1887 | * |
| 1888 | * Returns the 'site_url' option with the appropriate protocol, 'https' if |
| 1889 | * is_ssl() and 'http' otherwise. If $scheme is 'http' or 'https', is_ssl() is |
| 1890 | * overridden. |
| 1891 | * |