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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.
This hook occurs 3 times in this file.
Line | Code |
---|---|
4475 | * |
4476 | * @param array $args Arguments passed to get_avatar_data(), after processing. |
4477 | * @param mixed $id_or_email The avatar to retrieve. Accepts a user ID, Gravatar MD5 hash, |
4478 | * user email, WP_User object, WP_Post object, or WP_Comment object. |
4479 | */ |
4480 | $args = apply_filters( 'pre_get_avatar_data', $args, $id_or_email ); |
4481 |
|
4482 | if ( isset( $args['url'] ) ) { |
4483 | /** This filter is documented in wp-includes/link-template.php */ |
4484 | return apply_filters( 'get_avatar_data', $args, $id_or_email ); |
4485 | } |
4486 |
|
4487 | $email_hash = ''; |
4488 | $user = false; |
4489 | $email = false; |
4490 |
|
4491 | if ( is_object( $id_or_email ) && isset( $id_or_email->comment_ID ) ) { |
4492 | $id_or_email = get_comment( $id_or_email ); |
4493 | } |
Line | Code |
4507 | // User object. |
4508 | $user = $id_or_email; |
4509 | } elseif ( $id_or_email instanceof WP_Post ) { |
4510 | // Post object. |
4511 | $user = get_user_by( 'id', (int) $id_or_email->post_author ); |
4512 | } elseif ( $id_or_email instanceof WP_Comment ) { |
4513 | if ( ! is_avatar_comment_type( get_comment_type( $id_or_email ) ) ) { |
4514 | $args['url'] = false; |
4515 | /** This filter is documented in wp-includes/link-template.php */ |
4516 | return apply_filters( 'get_avatar_data', $args, $id_or_email ); |
4517 | } |
4518 |
|
4519 | if ( ! empty( $id_or_email->user_id ) ) { |
4520 | $user = get_user_by( 'id', (int) $id_or_email->user_id ); |
4521 | } |
4522 | if ( ( ! $user || is_wp_error( $user ) ) && ! empty( $id_or_email->comment_author_email ) ) { |
4523 | $email = $id_or_email->comment_author_email; |
4524 | } |
4525 | } |
Line | Code |
4573 | /** |
4574 | * Filters the avatar data. |
4575 | * |
4576 | * @since 4.2.0 |
4577 | * |
4578 | * @param array $args Arguments passed to get_avatar_data(), after processing. |
4579 | * @param mixed $id_or_email The avatar to retrieve. Accepts a user ID, Gravatar MD5 hash, |
4580 | * user email, WP_User object, WP_Post object, or WP_Comment object. |
4581 | */ |
4582 | return apply_filters( 'get_avatar_data', $args, $id_or_email ); |
4583 | } |
4584 |
|
4585 | /** |
4586 | * Retrieves the URL of a file in the theme. |
4587 | * |
4588 | * Searches in the stylesheet directory before the template directory so themes |
4589 | * which inherit from a parent theme can just override one file. |
4590 | * |
4591 | * @since 4.7.0 |