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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.
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2270 | * @param string $scheme The scheme to use. Default is 'admin', which obeys force_ssl_admin() and is_ssl(). 'http' or 'https' can be passed to force those schemes. |
2271 | * @return string Admin url link with optional path appended. |
2272 | */ |
2273 | function user_admin_url( $path = '', $scheme = 'admin' ) { |
2274 | $url = network_site_url('wp-admin/user/', $scheme); |
2275 |
|
2276 | if ( $path && is_string( $path ) ) |
2277 | $url .= ltrim($path, '/'); |
2278 |
|
2279 | return apply_filters('user_admin_url', $url, $path); |
2280 | } |
2281 |
|
2282 | /** |
2283 | * Retrieve the url to the admin area for either the current blog or the network depending on context. |
2284 | * |
2285 | * @package WordPress |
2286 | * @since 3.1.0 |
2287 | * |
2288 | * @param string $path Optional path relative to the admin url. |