我仍然认为Rarst的答案更好，并且没有必要删除核心WordPress文件中的Gravatar链接，但是。。。
您要查找的文件包括：
/wp-admin/credits.php
/wp-admin/options-discussion.php
/wp-content/plugins/akismet/akismet.js
/wp-includes/pluggable.php
/wp-includes/post-template.php
由于您可能需要在每次WordPress更新时执行此操作，因此您可以在WordPress文件中搜索单词“gravatar”。大多数优秀的文本编辑器都可以搜索目录及其子目录中的所有文件。您只需要在PHP和JavaScript文件中搜索。
以下是我得到的结果：
----------------------------------------
Find \'gravatar\' in \'C:\\WordPress\\WordPress\\wp-admin\\credits.php\' (11/19/2013 4:11:29 AM; 11/19/2013 4:11:29 AM):
C:\\WordPress\\WordPress\\wp-admin\\credits.php(113): $gravatar = is_ssl() ? \'https://secure.gravatar.com/avatar/\' : \'http://0.gravatar.com/avatar/\';
C:\\WordPress\\WordPress\\wp-admin\\credits.php(149): echo \'<img src="\' . $gravatar . $person_data[1] . \'?s=\' . $size . \'" class="gravatar" alt="\' . esc_attr( $person_data[0] ) . \'" /></a>\' . "\\n\\t";
Found \'gravatar\' 5 time(s).
----------------------------------------
Find \'gravatar\' in \'C:\\WordPress\\WordPress\\wp-admin\\options-discussion.php\' (11/19/2013 4:11:50 AM; 11/19/2013 4:11:50 AM):
C:\\WordPress\\WordPress\\wp-admin\\options-discussion.php(176): <?php // the above would be a good place to link to codex documentation on the gravatar functions, for putting it in themes. anything like that? ?>
C:\\WordPress\\WordPress\\wp-admin\\options-discussion.php(221): \'gravatar_default\' => __(\'Gravatar Logo\'),
Found \'gravatar\' 3 time(s).
----------------------------------------
Find \'gravatar\' in \'C:\\WordPress\\WordPress\\wp-content\\plugins\\akismet\\akismet.js\' (8/2/2013 9:33:47 AM; 8/2/2013 9:33:47 AM):
C:\\WordPress\\WordPress\\wp-content\\plugins\\akismet\\akismet.js(92): // It changes based on if there is a gravatar present
Found \'gravatar\' 1 time(s).
----------------------------------------
Find \'gravatar\' in \'C:\\WordPress\\WordPress\\wp-includes\\pluggable.php\' (11/19/2013 4:12:12 AM; 11/19/2013 4:12:12 AM):
C:\\WordPress\\WordPress\\wp-includes\\pluggable.php(1675): $host = \'https://secure.gravatar.com\';
C:\\WordPress\\WordPress\\wp-includes\\pluggable.php(1678): $host = sprintf( "http://%d.gravatar.com", ( hexdec( $email_hash[0] ) % 2 ) );
C:\\WordPress\\WordPress\\wp-includes\\pluggable.php(1680): $host = \'http://0.gravatar.com\';
C:\\WordPress\\WordPress\\wp-includes\\pluggable.php(1684): $default = "$host/avatar/ad516503a11cd5ca435acc9bb6523536?s={$size}"; // ad516503a11cd5ca435acc9bb6523536 == md5(\'[email protected]\')
C:\\WordPress\\WordPress\\wp-includes\\pluggable.php(1687): elseif ( !empty($email) && \'gravatar_default\' == $default )
C:\\WordPress\\WordPress\\wp-includes\\pluggable.php(1689): elseif ( \'gravatar_default\' == $default )
Found \'gravatar\' 6 time(s).
----------------------------------------
Find \'gravatar\' in \'C:\\WordPress\\WordPress\\wp-includes\\post-template.php\' (11/19/2013 4:12:26 AM; 11/19/2013 4:12:26 AM):
C:\\WordPress\\WordPress\\wp-includes\\post-template.php(1357): * @return string gravatar, user, i18n formatted datetimestamp or localized \'Current Revision\'.
C:\\WordPress\\WordPress\\wp-includes\\post-template.php(1370): $gravatar = get_avatar( $revision->post_author, 24 );
C:\\WordPress\\WordPress\\wp-includes\\post-template.php(1379): $gravatar,
Found \'gravatar\' 3 time(s).
Search complete, found \'gravatar\' 18 time(s). (5 file(s)).
我搜索了WordPress的主干版本。您需要在web服务器上搜索WordPress文件的本地副本。
此搜索表明只有\\wp-admin\\credits.php 文件需要更改。这个get_avatar() 此处未使用函数。为了尽量减少影响，您可以只更改第113行中使用的URL：
$gravatar = is_ssl() ? \'https://secure.gravatar.com/avatar/\' : \'http://0.gravatar.com/avatar/\';
到本地URL：
$gravatar = is_ssl() ? \'https://example.com/avatar/\' : \'http://example.com/avatar/\';
