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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 |
|---|---|
| 243 | return false; |
| 244 | |
| 245 | if ( $user->has_prop( $wpdb->prefix . $option ) ) // Blog specific |
| 246 | $result = $user->get( $wpdb->prefix . $option ); |
| 247 | elseif ( $user->has_prop( $option ) ) // User specific and cross-blog |
| 248 | $result = $user->get( $option ); |
| 249 | else |
| 250 | $result = false; |
| 251 | |
| 252 | return apply_filters("get_user_option_{$option}", $result, $option, $user); |
| 253 | } |
| 254 | |
| 255 | /** |
| 256 | * Update user option with global blog capability. |
| 257 | * |
| 258 | * User options are just like user metadata except that they have support for |
| 259 | * global blog options. If the 'global' parameter is false, which it is by default |
| 260 | * it will prepend the WordPress table prefix to the option name. |
| 261 | * |