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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 |
|---|---|
| 1264 | return $value; |
| 1265 | } |
| 1266 | |
| 1267 | $prefixed = false !== strpos( $field, 'user_' ); |
| 1268 | |
| 1269 | if ( 'edit' === $context ) { |
| 1270 | if ( $prefixed ) { |
| 1271 | |
| 1272 | /** This filter is documented in wp-includes/post.php */ |
| 1273 | $value = apply_filters( "edit_{$field}", $value, $user_id ); |
| 1274 | } else { |
| 1275 | |
| 1276 | /** |
| 1277 | * Filters a user field value in the 'edit' context. |
| 1278 | * |
| 1279 | * The dynamic portion of the hook name, `$field`, refers to the prefixed user |
| 1280 | * field being filtered, such as 'user_login', 'user_email', 'first_name', etc. |
| 1281 | * |
| 1282 | * @since 2.9.0 |