WordPress禁用Emoji表情及本地化Emoji提高网站速度

如果你更新到 WordPress 的 4.2 版本，查看网页源代码你会发现 WordPress 会自动在加载一段用于支持 emjo 表情的脚本（JS+CSS）。对于大部分人来说，这个是十分鸡肋的功能，再加上 GFW 的强大力量，反而影响加载速度。

我们有两种解决方法：启用或禁用。

原因分析

脚本就是类似下面的代码：

<script type="text/javascript"> window._wpemojiSettings = {"baseUrl":"http:\/\/s.w.org\/images\/core\/emoji\/72x72\/","ext":".png","source":{"concatemoji":"http:\/\/devework\/wp-includes\/js\/wp-emoji-release.min.js?ver=4.2"}}; !function(a,b,c){function d(a){var c=b.createElement("canvas"),d=c.getContext&&c.getContext("2d");return d&&d.fillText?(d.textBaseline="top",d.font="600 32px Arial","flag"===a?(d.fillText(String.fromCharCode(55356,56812,55356,56807),0,0),c.toDataURL().length>3e3):(d.fillText(String.fromCharCode(55357,56835),0,0),0!==d.getImageData(16,16,1,1).data[0])):!1}function e(a){var c=b.createElement("script");c.src=a,c.type="text/javascript",b.getElementsByTagName("head")[0].appendChild(c)}var f;c.supports={simple:d("simple"),flag:d("flag")},c.supports.simple&&c.supports.flag||(f=c.source||{},f.concatemoji?e(f.concatemoji):f.wpemoji&&f.twemoji&&(e(f.twemoji),e(f.wpemoji)))}(window,document,window._wpemojiSettings); </script> <style type="text/css"> img.wp-smiley, img.emoji { display: inline !important; border: none !important; box-shadow: none !important; height: 1em !important; width: 1em !important; margin: 0 .07em !important; vertical-align: -0.1em !important; background: none !important; padding: 0 !important; } </style>161718<script type="text/javascript"> window._wpemojiSettings = {"baseUrl":"http:\/\/s.w.org\/images\/core\/emoji\/72x72\/","ext":".png","source":{"concatemoji":"http:\/\/devework\/wp-includes\/js\/wp-emoji-release.min.js?ver=4.2"}}; !function(a,b,c){function d(a){var c=b.createElement("canvas"),d=c.getContext&&c.getContext("2d");return d&&d.fillText?(d.textBaseline="top",d.font="600 32px Arial","flag"===a?(d.fillText(String.fromCharCode(55356,56812,55356,56807),0,0),c.toDataURL().length>3e3):(d.fillText(String.fromCharCode(55357,56835),0,0),0!==d.getImageData(16,16,1,1).data[0])):!1}function e(a){var c=b.createElement("script");c.src=a,c.type="text/javascript",b.getElementsByTagName("head")[0].appendChild(c)}var f;c.supports={simple:d("simple"),flag:d("flag")},c.supports.simple&&c.supports.flag||(f=c.source||{},f.concatemoji?e(f.concatemoji):f.wpemoji&&f.twemoji&&(e(f.twemoji),e(f.wpemoji)))}(window,document,window._wpemojiSettings); </script> <style type="text/css"> img.wp-smiley, img.emoji { display: inline !important; border: none !important; box-shadow: none !important; height: 1em !important; width: 1em !important; margin: 0 .07em !important; vertical-align: -0.1em !important; background: none !important; padding: 0 !important; } </style>

因为WordPress 更新 4.2 的一个新增功能就是支持 emjo 表情，但看部分加载源居然是 wp.org 的 js 文件。对于大部分人来说，这个是十分鸡肋的功能。

禁用：移除 WordPress 4.2 中前台自动加载的 emoji 脚本

既然功能鸡肋，不如直接移除掉来得更加快捷。代码提取自 Disable Emojis 插件，可以放在主题目录下的 functions.php 文件中：

/** * Disable the emoji's */ function disable_emojis() { remove_action( 'wp_head', 'print_emoji_detection_script', 7 ); remove_action( 'admin_print_scripts', 'print_emoji_detection_script' ); remove_action( 'wp_print_styles', 'print_emoji_styles' ); remove_action( 'admin_print_styles', 'print_emoji_styles' ); remove_filter( 'the_content_feed', 'wp_staticize_emoji' ); remove_filter( 'comment_text_rss', 'wp_staticize_emoji' ); remove_filter( 'wp_mail', 'wp_staticize_emoji_for_email' ); add_filter( 'tiny_mce_plugins', 'disable_emojis_tinymce' ); } add_action( 'init', 'disable_emojis' );/** * Filter function used to remove the tinymce emoji plugin. */ function disable_emojis_tinymce( $plugins ) { if ( is_array( $plugins ) ) { return array_diff( $plugins, array( 'wpemoji' ) ); } else { return array(); } }161718192021222324/** * Disable the emoji's */ function disable_emojis() { remove_action( 'wp_head', 'print_emoji_detection_script', 7 ); remove_action( 'admin_print_scripts', 'print_emoji_detection_script' ); remove_action( 'wp_print_styles', 'print_emoji_styles' ); remove_action( 'admin_print_styles', 'print_emoji_styles' ); remove_filter( 'the_content_feed', 'wp_staticize_emoji' ); remove_filter( 'comment_text_rss', 'wp_staticize_emoji' ); remove_filter( 'wp_mail', 'wp_staticize_emoji_for_email' ); add_filter( 'tiny_mce_plugins', 'disable_emojis_tinymce' ); } add_action( 'init', 'disable_emojis' );/** * Filter function used to remove the tinymce emoji plugin. */ function disable_emojis_tinymce( $plugins ) { if ( is_array( $plugins ) ) { return array_diff( $plugins, array( 'wpemoji' ) ); } else { return array(); } }

启用：转存至本地调用 Emoji 表情

WordPress 官方将此功能会写入正式版一定有其理由。但我们知道 WP 的 CDN 早就被*掉，唯一方法就是转存到本地，使 WP 识别本地 Emoji 表情。

Twitter Emoji 表情包下载 http://cdn.fatesinger/72×72.zip，下载后直接解压至主题目录，文件夹名不变。将以下代码放在主题目录下的 functions.php 文件中：

//首先补全wp的表情库 function smilies_reset() { global $wpsmiliestrans, $wp_smiliessearch; // don't bother setting up smilies if they are disabled if (!get_option('use_smilies')) { return; } $wpsmiliestrans_fixed = array( ':mrgreen:' => "\xf0\x9f\x98\xa2", ':smile:' => "\xf0\x9f\x98\xa3", ':roll:' => "\xf0\x9f\x98\xa4", ':sad:' => "\xf0\x9f\x98\xa6", ':arrow:' => "\xf0\x9f\x98\x83", ':-(' => "\xf0\x9f\x98\x82", ':-)' => "\xf0\x9f\x98\x81", ':(' => "\xf0\x9f\x98\xa7", ':)' => "\xf0\x9f\x98\xa8", ':?:' => "\xf0\x9f\x98\x84", ':!:' => "\xf0\x9f\x98\x85", ); $wpsmiliestrans = array_merge($wpsmiliestrans, $wpsmiliestrans_fixed); } //替换cdn路径 function static_emoji_url() { return get_bloginfo('template_directory').'/72x72/'; } //让文章内容和评论支持 emoji 并禁用 emoji 加载的乱七八糟的脚本 function reset_emojis() { remove_action('wp_head', 'print_emoji_detection_script', 7); remove_action('admin_print_scripts', 'print_emoji_detection_script'); remove_action('wp_print_styles', 'print_emoji_styles'); remove_action('admin_print_styles', 'print_emoji_styles'); add_filter('the_content', 'wp_staticize_emoji'); add_filter('comment_text', 'wp_staticize_emoji',50); //在转换为表情后再转为静态图片 smilies_reset(); add_filter('emoji_url', 'static_emoji_url'); } add_action('init', 'reset_emojis'); //输出表情 function fa_get_wpsmiliestrans(){ global $wpsmiliestrans; $wpsmilies = array_unique($wpsmiliestrans); foreach($wpsmilies as $alt => $src_path){ $emoji = str_replace(array('&#x', ';'), '', wp_encode_emoji($src_path)); $output .= '<a data-smilies="'.$alt.'"><img src="'.get_bloginfo('template_directory').'/72x72/'.%20$emoji%20.'png" /></a>'; } return $output; }161718192021222324252627282930313233343536373839404142434445464748//首先补全wp的表情库 function smilies_reset() { global $wpsmiliestrans, $wp_smiliessearch; // don't bother setting up smilies if they are disabled if (!get_option('use_smilies')) { return; } $wpsmiliestrans_fixed = array( ':mrgreen:' => "\xf0\x9f\x98\xa2", ':smile:' => "\xf0\x9f\x98\xa3", ':roll:' => "\xf0\x9f\x98\xa4", ':sad:' => "\xf0\x9f\x98\xa6", ':arrow:' => "\xf0\x9f\x98\x83", ':-(' => "\xf0\x9f\x98\x82", ':-)' => "\xf0\x9f\x98\x81", ':(' => "\xf0\x9f\x98\xa7", ':)' => "\xf0\x9f\x98\xa8", ':?:' => "\xf0\x9f\x98\x84", ':!:' => "\xf0\x9f\x98\x85", ); $wpsmiliestrans = array_merge($wpsmiliestrans, $wpsmiliestrans_fixed); } //替换cdn路径 function static_emoji_url() { return get_bloginfo('template_directory').'/72x72/'; } //让文章内容和评论支持 emoji 并禁用 emoji 加载的乱七八糟的脚本 function reset_emojis() { remove_action('wp_head', 'print_emoji_detection_script', 7); remove_action('admin_print_scripts', 'print_emoji_detection_script'); remove_action('wp_print_styles', 'print_emoji_styles'); remove_action('admin_print_styles', 'print_emoji_styles'); add_filter('the_content', 'wp_staticize_emoji'); add_filter('comment_text', 'wp_staticize_emoji',50); //在转换为表情后再转为静态图片 smilies_reset(); add_filter('emoji_url', 'static_emoji_url'); } add_action('init', 'reset_emojis'); //输出表情 function fa_get_wpsmiliestrans(){ global $wpsmiliestrans; $wpsmilies = array_unique($wpsmiliestrans); foreach($wpsmilies as $alt => $src_path){ $emoji = str_replace(array('&#x', ';'), '', wp_encode_emoji($src_path)); $output .= '<a data-smilies="'.$alt.'"><img src="'.get_bloginfo('template_directory').'/72x72/'.%20$emoji%20.'png" /></a>'; } return $output; }

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