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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 |
---|---|
2038 | // No avatar for pingbacks or trackbacks |
2039 |
|
2040 | /** |
2041 | * Filter the list of allowed comment types for retrieving avatars. |
2042 | * |
2043 | * @since 3.0.0 |
2044 | * |
2045 | * @param array $types An array of content types. Default only contains 'comment'. |
2046 | */ |
2047 | $allowed_comment_types = apply_filters( 'get_avatar_comment_types', array( 'comment' ) ); |
2048 | if ( ! empty( $id_or_email->comment_type ) && ! in_array( $id_or_email->comment_type, (array) $allowed_comment_types ) ) |
2049 | return false; |
2050 |
|
2051 | if ( ! empty( $id_or_email->user_id ) ) { |
2052 | $id = (int) $id_or_email->user_id; |
2053 | $user = get_userdata($id); |
2054 | if ( $user ) |
2055 | $email = $user->user_email; |
2056 | } |