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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 |
|---|---|
| 203 | * |
| 204 | * @since 2.8 |
| 205 | * |
| 206 | * @return unknown |
| 207 | */ |
| 208 | function get_editable_roles() { |
| 209 | global $wp_roles; |
| 210 | |
| 211 | $all_roles = $wp_roles->roles; |
| 212 | $editable_roles = apply_filters('editable_roles', $all_roles); |
| 213 | |
| 214 | return $editable_roles; |
| 215 | } |
| 216 | |
| 217 | /** |
| 218 | * Retrieve user data and filter it. |
| 219 | * |
| 220 | * @since 2.0.5 |
| 221 | * |