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:
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<script type=”text/javascript”>
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window._wpemojiSettings = {“baseUrl”:”http:\/\/s.w.org\/images\/core\/emoji\/72×72\/”,”ext”:”.png”,”source”:{“concatemoji”:”http:\/\/devework.com\/wp-includes\/js\/wp-emoji-release.min.js?ver=4.2″}};
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!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);
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</script>
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<style type=”text/css”>
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img.wp-smiley,
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img.emoji {
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display: inline !important;
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border: none !important;
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box-shadow: none !important;
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height: 1em !important;
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width: 1em !important;
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margin: 0 .07em !important;
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vertical-align: -0.1em !important;
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background: none !important;
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padding: 0 !important;
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}
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</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:
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/**
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* Disable the emoji’s
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*/
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function disable_emojis() {
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remove_action( ‘wp_head’, ‘print_emoji_detection_script’, 7 );
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remove_action( ‘admin_print_scripts’, ‘print_emoji_detection_script’ );
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remove_action( ‘wp_print_styles’, ‘print_emoji_styles’ );
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remove_action( ‘admin_print_styles’, ‘print_emoji_styles’ );
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remove_filter( ‘the_content_feed’, ‘wp_staticize_emoji’ );
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remove_filter( ‘comment_text_rss’, ‘wp_staticize_emoji’ );
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remove_filter( ‘wp_mail’, ‘wp_staticize_emoji_for_email’ );
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add_filter( ‘tiny_mce_plugins’, ‘disable_emojis_tinymce’ );
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}
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add_action( ‘init’, ‘disable_emojis’ );
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/**
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* Filter function used to remove the tinymce emoji plugin.
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*/
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function disable_emojis_tinymce( $plugins ) {
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if ( is_array( $plugins ) ) {
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return array_diff( $plugins, array( ‘wpemoji’ ) );
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} else {
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return array();
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}
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}
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,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:
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//首先补全wp的表情库
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function smilies_reset() {
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global $wpsmiliestrans, $wp_smiliessearch;
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// don’t bother setting up smilies if they are disabled
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if (!get_option(‘use_smilies’)) {
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return;
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}
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$wpsmiliestrans_fixed = array(
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‘:mrgreen:’ => “\xf0\x9f\x98\xa2”,
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‘:smile:’ => “\xf0\x9f\x98\xa3”,
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‘:roll:’ => “\xf0\x9f\x98\xa4”,
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‘:sad:’ => “\xf0\x9f\x98\xa6”,
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‘:arrow:’ => “\xf0\x9f\x98\x83”,
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‘:-(‘ => “\xf0\x9f\x98\x82”,
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‘:-)’ => “\xf0\x9f\x98\x81”,
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‘:(‘ => “\xf0\x9f\x98\xa7”,
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‘:)’ => “\xf0\x9f\x98\xa8”,
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‘:?:’ => “\xf0\x9f\x98\x84”,
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‘:!:’ => “\xf0\x9f\x98\x85”,
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);
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$wpsmiliestrans = array_merge($wpsmiliestrans, $wpsmiliestrans_fixed);
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}
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//替换cdn路径
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function static_emoji_url() {
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return get_bloginfo(‘template_directory’).’/72×72/’;
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}
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//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
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function reset_emojis() {
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remove_action(‘wp_head’, ‘print_emoji_detection_script’, 7);
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remove_action(‘admin_print_scripts’, ‘print_emoji_detection_script’);
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remove_action(‘wp_print_styles’, ‘print_emoji_styles’);
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remove_action(‘admin_print_styles’, ‘print_emoji_styles’);
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add_filter(‘the_content’, ‘wp_staticize_emoji’);
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add_filter(‘comment_text’, ‘wp_staticize_emoji’,50); //在转换为表情后再转为静态图片
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smilies_reset();
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add_filter(’emoji_url’, ‘static_emoji_url’);
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}
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add_action(‘init’, ‘reset_emojis’);
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//输出表情
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function fa_get_wpsmiliestrans(){
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global $wpsmiliestrans;
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$wpsmilies = array_unique($wpsmiliestrans);
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foreach($wpsmilies as $alt => $src_path){
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$emoji = str_replace(array(‘&#x’, ‘;’), ”, wp_encode_emoji($src_path));
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$output .= ‘<a class=”add-smily” data-smilies=”‘.$alt.'”><img class=”wp-smiley” src=”‘.get_bloginfo(‘template_directory’).’/72×72/’. $emoji .’png” /></a>’;
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}
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return $output;
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}
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