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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 | $description = empty( $userdata['description'] ) ? '' : $userdata['description']; |
| 2300 | |
| 2301 | /** |
| 2302 | * Filters a user's description before the user is created or updated. |
| 2303 | * |
| 2304 | * @since 2.0.3 |
| 2305 | * |
| 2306 | * @param string $description The user's description. |
| 2307 | */ |
| 2308 | $meta['description'] = apply_filters( 'pre_user_description', $description ); |
| 2309 | |
| 2310 | $meta['rich_editing'] = empty( $userdata['rich_editing'] ) ? 'true' : $userdata['rich_editing']; |
| 2311 | |
| 2312 | $meta['syntax_highlighting'] = empty( $userdata['syntax_highlighting'] ) ? 'true' : $userdata['syntax_highlighting']; |
| 2313 | |
| 2314 | $meta['comment_shortcuts'] = empty( $userdata['comment_shortcuts'] ) || 'false' === $userdata['comment_shortcuts'] ? 'false' : 'true'; |
| 2315 | |
| 2316 | $admin_color = empty( $userdata['admin_color'] ) ? 'fresh' : $userdata['admin_color']; |
| 2317 | $meta['admin_color'] = preg_replace( '|[^a-z0-9 _.\-@]|i', '', $admin_color ); |