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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 |
|---|---|
| 539 | /** |
| 540 | * Filters the user profile picture description displayed under the Gravatar. |
| 541 | * |
| 542 | * @since 4.4.0 |
| 543 | * @since 4.7.0 Added the `$profileuser` parameter. |
| 544 | * |
| 545 | * @param string $description The description that will be printed. |
| 546 | * @param WP_User $profileuser The current WP_User object. |
| 547 | */ |
| 548 | echo apply_filters( 'user_profile_picture_description', $description, $profileuser ); |
| 549 | ?></p> |
| 550 | </td> |
| 551 | </tr> |
| 552 | <?php endif; ?> |
| 553 | |
| 554 | <?php |
| 555 | /** |
| 556 | * Filters the display of the password fields. |
| 557 | * |