WordPress缓存Gravatar头像到本地，提高加载速度

本文目录[隐藏]

1旧版缓存方案
2新版缓存方案

在博客圈混，如果你还不知道什么是Gravatar头像，那你真的白混了，自己去补补吧：Gravatar全球通用头像注册使用图文教程。Gravatar官方的服务器有好几个，都在国外，返回头像时，加载速度不是很理想，所以，将头像缓存到我们的主机空间里，这样加载的速度就会好很多。

旧版缓存方案

下面介绍的方法来自 Willin Kan 大师（可惜他已经退出WordPress圈），一起来折腾下吧。

1.在wp-content 的同級目录建立一个文件夹，命名为 avatar ，设置该文件夹的权限为 0755 (如果 0755 不行，就试一下 0777)。

2.准备一张大小适合的默认头像,命名为”default.jpg” ，放在 avatar 文件夹里面。

3.在主题的 functions.php 最后一个 ?> 的前面添加下面的代码即可：

<span style="color: #000000; font-weight: bold;">function</span> my_avatar<span style="color: #009900;">&#40;</span><span style="color: #000088;">$avatar</span><span style="color: #009900;">&#41;</span> <span style="color: #009900;">&#123;</span>
     <span style="color: #000088;">$tmp</span> <span style="color: #339933;">=</span> <span style="color: #990000;">strpos</span><span style="color: #009900;">&#40;</span><span style="color: #000088;">$avatar</span><span style="color: #339933;">,</span> <span style="color: #0000ff;">'http'</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span>
     <span style="color: #000088;">$g</span> <span style="color: #339933;">=</span> <span style="color: #990000;">substr</span><span style="color: #009900;">&#40;</span><span style="color: #000088;">$avatar</span><span style="color: #339933;">,</span> <span style="color: #000088;">$tmp</span><span style="color: #339933;">,</span> <span style="color: #990000;">strpos</span><span style="color: #009900;">&#40;</span><span style="color: #000088;">$avatar</span><span style="color: #339933;">,</span> <span style="color: #0000ff;">&quot;'&quot;</span><span style="color: #339933;">,</span> <span style="color: #000088;">$tmp</span><span style="color: #009900;">&#41;</span> <span style="color: #339933;">-</span> <span style="color: #000088;">$tmp</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span>
     <span style="color: #000088;">$tmp</span> <span style="color: #339933;">=</span> <span style="color: #990000;">strpos</span><span style="color: #009900;">&#40;</span><span style="color: #000088;">$g</span><span style="color: #339933;">,</span> <span style="color: #0000ff;">'avatar/'</span><span style="color: #009900;">&#41;</span> <span style="color: #339933;">+</span> <span style="color: #cc66cc;">7</span><span style="color: #339933;">;</span>
     <span style="color: #000088;">$f</span> <span style="color: #339933;">=</span> <span style="color: #990000;">substr</span><span style="color: #009900;">&#40;</span><span style="color: #000088;">$g</span><span style="color: #339933;">,</span> <span style="color: #000088;">$tmp</span><span style="color: #339933;">,</span> <span style="color: #990000;">strpos</span><span style="color: #009900;">&#40;</span><span style="color: #000088;">$g</span><span style="color: #339933;">,</span> <span style="color: #0000ff;">&quot;?&quot;</span><span style="color: #339933;">,</span> <span style="color: #000088;">$tmp</span><span style="color: #009900;">&#41;</span> <span style="color: #339933;">-</span> <span style="color: #000088;">$tmp</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span>
     <span style="color: #000088;">$w</span> <span style="color: #339933;">=</span> home_url<span style="color: #009900;">&#40;</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span> <span style="color: #666666; font-style: italic;">// $w = get_bloginfo('url');</span>
     <span style="color: #666666; font-style: italic;">//$e = preg_replace('/wordpress/', '', ABSPATH) .'avatar/'. $f .'.jpg';</span>
     <span style="color: #000088;">$e</span> <span style="color: #339933;">=</span> ABSPATH <span style="color: #339933;">.</span><span style="color: #0000ff;">'avatar/'</span><span style="color: #339933;">.</span> <span style="color: #000088;">$f</span> <span style="color: #339933;">.</span><span style="color: #0000ff;">'.jpg'</span><span style="color: #339933;">;</span>
     <span style="color: #000088;">$t</span> <span style="color: #339933;">=</span> <span style="color: #cc66cc;">604800</span><span style="color: #339933;">;</span> <span style="color: #666666; font-style: italic;">//设定7天, 单位:秒</span>
     <span style="color: #b1b100;">if</span> <span style="color: #009900;">&#40;</span> <span style="color: #990000;">empty</span><span style="color: #009900;">&#40;</span><span style="color: #000088;">$default</span><span style="color: #009900;">&#41;</span> <span style="color: #009900;">&#41;</span> <span style="color: #000088;">$default</span> <span style="color: #339933;">=</span> <span style="color: #000088;">$w</span><span style="color: #339933;">.</span> <span style="color: #0000ff;">'/avatar/default.jpg'</span><span style="color: #339933;">;</span>
     <span style="color: #b1b100;">if</span> <span style="color: #009900;">&#40;</span> <span style="color: #339933;">!</span><span style="color: #990000;">is_file</span><span style="color: #009900;">&#40;</span><span style="color: #000088;">$e</span><span style="color: #009900;">&#41;</span> <span style="color: #339933;">||</span> <span style="color: #009900;">&#40;</span><span style="color: #990000;">time</span><span style="color: #009900;">&#40;</span><span style="color: #009900;">&#41;</span> <span style="color: #339933;">-</span> <span style="color: #990000;">filemtime</span><span style="color: #009900;">&#40;</span><span style="color: #000088;">$e</span><span style="color: #009900;">&#41;</span><span style="color: #009900;">&#41;</span> <span style="color: #339933;">&gt;</span> <span style="color: #000088;">$t</span> <span style="color: #009900;">&#41;</span> <span style="color: #666666; font-style: italic;">//当头像不存在或者文件超过7天才更新</span>
         <span style="color: #990000;">copy</span><span style="color: #009900;">&#40;</span><span style="color: #990000;">htmlspecialchars_decode</span><span style="color: #009900;">&#40;</span><span style="color: #000088;">$g</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">,</span> <span style="color: #000088;">$e</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span>
     <span style="color: #b1b100;">else</span>
         <span style="color: #000088;">$avatar</span> <span style="color: #339933;">=</span> <span style="color: #990000;">strtr</span><span style="color: #009900;">&#40;</span><span style="color: #000088;">$avatar</span><span style="color: #339933;">,</span> <span style="color: #990000;">array</span><span style="color: #009900;">&#40;</span><span style="color: #000088;">$g</span> <span style="color: #339933;">=&gt;</span> <span style="color: #000088;">$w</span><span style="color: #339933;">.</span><span style="color: #0000ff;">'/avatar/'</span><span style="color: #339933;">.</span><span style="color: #000088;">$f</span><span style="color: #339933;">.</span><span style="color: #0000ff;">'.jpg'</span><span style="color: #009900;">&#41;</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span>
     <span style="color: #b1b100;">if</span> <span style="color: #009900;">&#40;</span><span style="color: #990000;">filesize</span><span style="color: #009900;">&#40;</span><span style="color: #000088;">$e</span><span style="color: #009900;">&#41;</span> <span style="color: #339933;">&lt;</span> <span style="color: #cc66cc;">500</span><span style="color: #009900;">&#41;</span> <span style="color: #990000;">copy</span><span style="color: #009900;">&#40;</span><span style="color: #000088;">$default</span><span style="color: #339933;">,</span> <span style="color: #000088;">$e</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span>
     <span style="color: #b1b100;">return</span> <span style="color: #000088;">$avatar</span><span style="color: #339933;">;</span>
 <span style="color: #009900;">&#125;</span>
 add_filter<span style="color: #009900;">&#40;</span><span style="color: #0000ff;">'get_avatar'</span><span style="color: #339933;">,</span> <span style="color: #0000ff;">'my_avatar'</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span>

function my_avatar($avatar) {

$tmp = strpos($avatar, 'http');

$g = substr($avatar, $tmp, strpos($avatar, "'", $tmp) - $tmp);

$tmp = strpos($g, 'avatar/') + 7;

$f = substr($g, $tmp, strpos($g, "?", $tmp) - $tmp);

$w = home_url(); // $w = get_bloginfo('url');

//$e = preg_replace('/wordpress/', '', ABSPATH) .'avatar/'. $f .'.jpg';

$t = 604800; //设定7天, 单位:秒

if ( empty($default) ) $default = $w. '/avatar/default.jpg';

if ( !is_file($e) || (time() - filemtime($e)) > $t ) //当头像不存在或者文件超过7天才更新

copy(htmlspecialchars_decode($g), $e);

else

$avatar = strtr($avatar, array($g => $w.'/avatar/'.$f.'.jpg'));

if (filesize($e) < 500) copy($default, $e);

return $avatar;

}

function my_avatar($avatar) {
$tmp = strpos($avatar, ‘http’);
$g = substr($avatar, $tmp, strpos($avatar, "’", $tmp) – $tmp);
$tmp = strpos($g, ‘avatar/’) + 7;
$f = substr($g, $tmp, strpos($g, "?", $tmp) – $tmp);
$w = home_url(); // $w = get_bloginfo(‘url’);
//$e = preg_replace(‘/wordpress/’, ”, ABSPATH) .’avatar/’. $f .’.jpg’;
$e = ABSPATH .’avatar/’. $f .’.jpg’;
$t = 604800; //设定7天, 单位:秒
if ( empty($default) ) $default = $w. ‘/avatar/default.jpg’;
if ( !is_file($e) || (time() – filemtime($e)) > $t ) //当头像不存在或者文件超过7天才更新
copy(htmlspecialchars_decode($g), $e);
else
$avatar = strtr($avatar, array($g => $w.’/avatar/’.$f.’.jpg’));
if (filesize($e) < 500) copy($default, $e);
return $avatar;
}
add_filter(‘get_avatar’, ‘my_avatar’);

新版缓存方案

在Gravatar没被墙之前，很多人都是把头像缓存到本地来加速，自从被墙后（貌似现在恢复了，但是速度非常慢），国内主机就告别这个方法了，都是使用替换服务器的方法，但是很多时候速度还不是很理想。还有就是新版的get_avatar函数已经支持srcset来适应高清屏，一些不好的代码在高清屏下可能出现问题。

另外就是旧版的缓存函数只能缓存一个尺寸的头像，如果网站调用了多个尺寸的头像可能调用大头像的时候会不清晰。于是我改进了代码：

支持国内主机
支持不同大小的头像

下面的代码加到functions.php中，部分参考了以前willin写的那个。

<span style="color: #000000; font-weight: bold;">function</span> fa_cache_avatar<span style="color: #009900;">&#40;</span><span style="color: #000088;">$avatar</span><span style="color: #339933;">,</span> <span style="color: #000088;">$id_or_email</span><span style="color: #339933;">,</span> <span style="color: #000088;">$size</span><span style="color: #339933;">,</span> <span style="color: #000088;">$default</span><span style="color: #339933;">,</span> <span style="color: #000088;">$alt</span><span style="color: #009900;">&#41;</span>
<span style="color: #009900;">&#123;</span>
    <span style="color: #000088;">$avatar</span> <span style="color: #339933;">=</span> <span style="color: #990000;">str_replace</span><span style="color: #009900;">&#40;</span><span style="color: #990000;">array</span><span style="color: #009900;">&#40;</span><span style="color: #0000ff;">&quot;www.gravatar.com&quot;</span><span style="color: #339933;">,</span> <span style="color: #0000ff;">&quot;0.gravatar.com&quot;</span><span style="color: #339933;">,</span> <span style="color: #0000ff;">&quot;1.gravatar.com&quot;</span><span style="color: #339933;">,</span> <span style="color: #0000ff;">&quot;2.gravatar.com&quot;</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">,</span> <span style="color: #0000ff;">&quot;cn.gravatar.com&quot;</span><span style="color: #339933;">,</span> <span style="color: #000088;">$avatar</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span>
    <span style="color: #000088;">$tmp</span> <span style="color: #339933;">=</span> <span style="color: #990000;">strpos</span><span style="color: #009900;">&#40;</span><span style="color: #000088;">$avatar</span><span style="color: #339933;">,</span> <span style="color: #0000ff;">'http'</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span>
    <span style="color: #000088;">$url</span> <span style="color: #339933;">=</span> get_avatar_url<span style="color: #009900;">&#40;</span> <span style="color: #000088;">$id_or_email</span><span style="color: #339933;">,</span> <span style="color: #000088;">$size</span> <span style="color: #009900;">&#41;</span> <span style="color: #339933;">;</span>
    <span style="color: #000088;">$url</span> <span style="color: #339933;">=</span> <span style="color: #990000;">str_replace</span><span style="color: #009900;">&#40;</span><span style="color: #990000;">array</span><span style="color: #009900;">&#40;</span><span style="color: #0000ff;">&quot;www.gravatar.com&quot;</span><span style="color: #339933;">,</span> <span style="color: #0000ff;">&quot;0.gravatar.com&quot;</span><span style="color: #339933;">,</span> <span style="color: #0000ff;">&quot;1.gravatar.com&quot;</span><span style="color: #339933;">,</span> <span style="color: #0000ff;">&quot;2.gravatar.com&quot;</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">,</span> <span style="color: #0000ff;">&quot;cn.gravatar.com&quot;</span><span style="color: #339933;">,</span> <span style="color: #000088;">$url</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span>
    <span style="color: #000088;">$avatar2x</span> <span style="color: #339933;">=</span> get_avatar_url<span style="color: #009900;">&#40;</span> <span style="color: #000088;">$id_or_email</span><span style="color: #339933;">,</span> <span style="color: #009900;">&#40;</span> <span style="color: #000088;">$size</span> <span style="color: #339933;">*</span> <span style="color: #cc66cc;">2</span> <span style="color: #009900;">&#41;</span> <span style="color: #009900;">&#41;</span> <span style="color: #339933;">;</span>
    <span style="color: #000088;">$avatar2x</span> <span style="color: #339933;">=</span> <span style="color: #990000;">str_replace</span><span style="color: #009900;">&#40;</span><span style="color: #990000;">array</span><span style="color: #009900;">&#40;</span><span style="color: #0000ff;">&quot;www.gravatar.com&quot;</span><span style="color: #339933;">,</span> <span style="color: #0000ff;">&quot;0.gravatar.com&quot;</span><span style="color: #339933;">,</span> <span style="color: #0000ff;">&quot;1.gravatar.com&quot;</span><span style="color: #339933;">,</span> <span style="color: #0000ff;">&quot;2.gravatar.com&quot;</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">,</span> <span style="color: #0000ff;">&quot;cn.gravatar.com&quot;</span><span style="color: #339933;">,</span> <span style="color: #000088;">$avatar2x</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span>
    <span style="color: #000088;">$g</span> <span style="color: #339933;">=</span> <span style="color: #990000;">substr</span><span style="color: #009900;">&#40;</span><span style="color: #000088;">$avatar</span><span style="color: #339933;">,</span> <span style="color: #000088;">$tmp</span><span style="color: #339933;">,</span> <span style="color: #990000;">strpos</span><span style="color: #009900;">&#40;</span><span style="color: #000088;">$avatar</span><span style="color: #339933;">,</span> <span style="color: #0000ff;">&quot;'&quot;</span><span style="color: #339933;">,</span> <span style="color: #000088;">$tmp</span><span style="color: #009900;">&#41;</span> <span style="color: #339933;">-</span> <span style="color: #000088;">$tmp</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span>
    <span style="color: #000088;">$tmp</span> <span style="color: #339933;">=</span> <span style="color: #990000;">strpos</span><span style="color: #009900;">&#40;</span><span style="color: #000088;">$g</span><span style="color: #339933;">,</span> <span style="color: #0000ff;">'avatar/'</span><span style="color: #009900;">&#41;</span> <span style="color: #339933;">+</span> <span style="color: #cc66cc;">7</span><span style="color: #339933;">;</span>
    <span style="color: #000088;">$f</span> <span style="color: #339933;">=</span> <span style="color: #990000;">substr</span><span style="color: #009900;">&#40;</span><span style="color: #000088;">$g</span><span style="color: #339933;">,</span> <span style="color: #000088;">$tmp</span><span style="color: #339933;">,</span> <span style="color: #990000;">strpos</span><span style="color: #009900;">&#40;</span><span style="color: #000088;">$g</span><span style="color: #339933;">,</span> <span style="color: #0000ff;">&quot;?&quot;</span><span style="color: #339933;">,</span> <span style="color: #000088;">$tmp</span><span style="color: #009900;">&#41;</span> <span style="color: #339933;">-</span> <span style="color: #000088;">$tmp</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span>
    <span style="color: #000088;">$w</span> <span style="color: #339933;">=</span> home_url<span style="color: #009900;">&#40;</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span>
    <span style="color: #000088;">$e</span> <span style="color: #339933;">=</span> ABSPATH <span style="color: #339933;">.</span><span style="color: #0000ff;">'avatar/'</span><span style="color: #339933;">.</span> <span style="color: #000088;">$size</span> <span style="color: #339933;">.</span> <span style="color: #0000ff;">'*'</span><span style="color: #339933;">.</span> <span style="color: #000088;">$f</span> <span style="color: #339933;">.</span><span style="color: #0000ff;">'.jpg'</span><span style="color: #339933;">;</span>
    <span style="color: #000088;">$e2x</span> <span style="color: #339933;">=</span> ABSPATH <span style="color: #339933;">.</span><span style="color: #0000ff;">'avatar/'</span><span style="color: #339933;">.</span> <span style="color: #009900;">&#40;</span> <span style="color: #000088;">$size</span> <span style="color: #339933;">*</span> <span style="color: #cc66cc;">2</span> <span style="color: #009900;">&#41;</span> <span style="color: #339933;">.</span> <span style="color: #0000ff;">'*'</span><span style="color: #339933;">.</span> <span style="color: #000088;">$f</span> <span style="color: #339933;">.</span><span style="color: #0000ff;">'.jpg'</span><span style="color: #339933;">;</span>
    <span style="color: #000088;">$t</span> <span style="color: #339933;">=</span> <span style="color: #cc66cc;">1209600</span><span style="color: #339933;">;</span> 
    <span style="color: #b1b100;">if</span> <span style="color: #009900;">&#40;</span> <span style="color: #009900;">&#40;</span><span style="color: #339933;">!</span><span style="color: #990000;">is_file</span><span style="color: #009900;">&#40;</span><span style="color: #000088;">$e</span><span style="color: #009900;">&#41;</span> <span style="color: #339933;">||</span> <span style="color: #009900;">&#40;</span><span style="color: #990000;">time</span><span style="color: #009900;">&#40;</span><span style="color: #009900;">&#41;</span> <span style="color: #339933;">-</span> <span style="color: #990000;">filemtime</span><span style="color: #009900;">&#40;</span><span style="color: #000088;">$e</span><span style="color: #009900;">&#41;</span><span style="color: #009900;">&#41;</span> <span style="color: #339933;">&gt;</span> <span style="color: #000088;">$t</span><span style="color: #009900;">&#41;</span> <span style="color: #339933;">&amp;&amp;</span> <span style="color: #009900;">&#40;</span><span style="color: #339933;">!</span><span style="color: #990000;">is_file</span><span style="color: #009900;">&#40;</span><span style="color: #000088;">$e2x</span><span style="color: #009900;">&#41;</span> <span style="color: #339933;">||</span> <span style="color: #009900;">&#40;</span><span style="color: #990000;">time</span><span style="color: #009900;">&#40;</span><span style="color: #009900;">&#41;</span> <span style="color: #339933;">-</span> <span style="color: #990000;">filemtime</span><span style="color: #009900;">&#40;</span><span style="color: #000088;">$e2x</span><span style="color: #009900;">&#41;</span><span style="color: #009900;">&#41;</span> <span style="color: #339933;">&gt;</span> <span style="color: #000088;">$t</span> <span style="color: #009900;">&#41;</span> <span style="color: #009900;">&#41;</span> <span style="color: #009900;">&#123;</span> 
        <span style="color: #990000;">copy</span><span style="color: #009900;">&#40;</span><span style="color: #990000;">htmlspecialchars_decode</span><span style="color: #009900;">&#40;</span><span style="color: #000088;">$g</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">,</span> <span style="color: #000088;">$e</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span>
        <span style="color: #990000;">copy</span><span style="color: #009900;">&#40;</span><span style="color: #990000;">htmlspecialchars_decode</span><span style="color: #009900;">&#40;</span><span style="color: #000088;">$avatar2x</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">,</span> <span style="color: #000088;">$e2x</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span>
    <span style="color: #009900;">&#125;</span> <span style="color: #b1b100;">else</span> <span style="color: #009900;">&#123;</span> <span style="color: #000088;">$avatar</span> <span style="color: #339933;">=</span> <span style="color: #000088;">$w</span><span style="color: #339933;">.</span><span style="color: #0000ff;">'/avatar/'</span><span style="color: #339933;">.</span> <span style="color: #000088;">$size</span> <span style="color: #339933;">.</span> <span style="color: #0000ff;">'*'</span><span style="color: #339933;">.</span><span style="color: #000088;">$f</span><span style="color: #339933;">.</span><span style="color: #0000ff;">'.jpg'</span><span style="color: #339933;">;</span>
        <span style="color: #000088;">$avatar2x</span> <span style="color: #339933;">=</span> <span style="color: #000088;">$w</span><span style="color: #339933;">.</span><span style="color: #0000ff;">'/avatar/'</span><span style="color: #339933;">.</span> <span style="color: #009900;">&#40;</span> <span style="color: #000088;">$size</span> <span style="color: #339933;">*</span> <span style="color: #cc66cc;">2</span><span style="color: #009900;">&#41;</span> <span style="color: #339933;">.</span> <span style="color: #0000ff;">'*'</span><span style="color: #339933;">.</span><span style="color: #000088;">$f</span><span style="color: #339933;">.</span><span style="color: #0000ff;">'.jpg'</span><span style="color: #339933;">;</span>
        <span style="color: #b1b100;">if</span> <span style="color: #009900;">&#40;</span><span style="color: #990000;">filesize</span><span style="color: #009900;">&#40;</span><span style="color: #000088;">$e</span><span style="color: #009900;">&#41;</span> <span style="color: #339933;">&lt;</span> <span style="color: #cc66cc;">1000</span><span style="color: #009900;">&#41;</span> <span style="color: #990000;">copy</span><span style="color: #009900;">&#40;</span><span style="color: #000088;">$w</span><span style="color: #339933;">.</span><span style="color: #0000ff;">'/avatar/default.jpg'</span><span style="color: #339933;">,</span> <span style="color: #000088;">$e</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span>
        <span style="color: #b1b100;">if</span> <span style="color: #009900;">&#40;</span><span style="color: #990000;">filesize</span><span style="color: #009900;">&#40;</span><span style="color: #000088;">$e2x</span><span style="color: #009900;">&#41;</span> <span style="color: #339933;">&lt;</span> <span style="color: #cc66cc;">1000</span><span style="color: #009900;">&#41;</span> <span style="color: #990000;">copy</span><span style="color: #009900;">&#40;</span><span style="color: #000088;">$w</span><span style="color: #339933;">.</span><span style="color: #0000ff;">'/avatar/default.jpg'</span><span style="color: #339933;">,</span> <span style="color: #000088;">$e2x</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span>
        <span style="color: #000088;">$avatar</span> <span style="color: #339933;">=</span> <span style="color: #0000ff;">&quot;&lt;img alt='<span style="color: #006699; font-weight: bold;">{$alt}</span>' src='<span style="color: #006699; font-weight: bold;">{$avatar}</span>' srcset='<span style="color: #006699; font-weight: bold;">{$avatar2x}</span>' class='avatar avatar-<span style="color: #006699; font-weight: bold;">{$size}</span> photo' height='<span style="color: #006699; font-weight: bold;">{$size}</span>' width='<span style="color: #006699; font-weight: bold;">{$size}</span>' /&gt;&quot;</span><span style="color: #339933;">;</span>
    <span style="color: #009900;">&#125;</span>
    <span style="color: #b1b100;">return</span> <span style="color: #000088;">$avatar</span><span style="color: #339933;">;</span>
<span style="color: #009900;">&#125;</span>
add_filter<span style="color: #009900;">&#40;</span><span style="color: #0000ff;">'get_avatar'</span><span style="color: #339933;">,</span> <span style="color: #0000ff;">'fa_cache_avatar'</span><span style="color: #339933;">,</span><span style="color: #cc66cc;">1</span><span style="color: #339933;">,</span><span style="color: #cc66cc;">5</span><span style="color: #009900;">&#41;</span><span style="color: #339933;">;</span>