输入“ :)”时显示不同的笑脸

如果您输入:)WordPress，它将自动替换为：

有没有办法使用不同的笑脸 :)

将:)的表情符号覆盖到😎

内容表情符号转换为：

add_filter( 'the_content', 'convert_smilies' );

其中，这部分的的convert_smilies()作用是非常重要的：

$content = preg_replace_callback( $wp_smiliessearch, 'translate_smiley', $content );

如果我们窥视一下，translate_smiley()就会发现以下内容：

// Don't convert smilies that aren't images - they're probably emoji.
if ( ! in_array( $ext, $image_exts ) ) {
     return $img;
}

在smilies_src应用过滤器之前。

因此，在:)笑脸的情况下，此过滤器不可用。

我们将表情符号初始化为：

add_action( 'init', 'smilies_init', 5 );

在功能说明中，smilies_init()我们可以阅读以下内容：

插件可以通过将设置$wpsmiliestrans 为一个数组来覆盖默认的笑脸列表，并使用博主输入的代码和图像文件的值作为键。

这是全局$wpsmiliestrans数组：

$wpsmiliestrans = array(
    ':mrgreen:' => 'mrgreen.png',
    ':neutral:' => "\xf0\x9f\x98\x90",
    ':twisted:' => "\xf0\x9f\x98\x88",
    ':arrow:' => "\xe2\x9e\xa1",
    ':shock:' => "\xf0\x9f\x98\xaf",
    ':smile:' => "\xf0\x9f\x99\x82",
    ':???:' => "\xf0\x9f\x98\x95",
    ':cool:' => "\xf0\x9f\x98\x8e",
    ':evil:' => "\xf0\x9f\x91\xbf",
    ':grin:' => "\xf0\x9f\x98\x80",
    ':idea:' => "\xf0\x9f\x92\xa1",
    ':oops:' => "\xf0\x9f\x98\xb3",
    ':razz:' => "\xf0\x9f\x98\x9b",
    ':roll:' => 'rolleyes.png',
    ':wink:' => "\xf0\x9f\x98\x89",
    ':cry:' => "\xf0\x9f\x98\xa5",
    ':eek:' => "\xf0\x9f\x98\xae",
    ':lol:' => "\xf0\x9f\x98\x86",
    ':mad:' => "\xf0\x9f\x98\xa1",
    ':sad:' => "\xf0\x9f\x99\x81",
    '8-)' => "\xf0\x9f\x98\x8e",
    '8-O' => "\xf0\x9f\x98\xaf",
    ':-(' => "\xf0\x9f\x99\x81",
    ':-)' => "\xf0\x9f\x99\x82",
    ':-?' => "\xf0\x9f\x98\x95",
    ':-D' => "\xf0\x9f\x98\x80",
    ':-P' => "\xf0\x9f\x98\x9b",
    ':-o' => "\xf0\x9f\x98\xae",
    ':-x' => "\xf0\x9f\x98\xa1",
    ':-|' => "\xf0\x9f\x98\x90",
    ';-)' => "\xf0\x9f\x98\x89",
    // This one transformation breaks regular text with frequency.
    //     '8)' => "\xf0\x9f\x98\x8e",
    '8O' => "\xf0\x9f\x98\xaf",
    ':(' => "\xf0\x9f\x99\x81",
    ':)' => "\xf0\x9f\x99\x82",
    ':?' => "\xf0\x9f\x98\x95",
    ':D' => "\xf0\x9f\x98\x80",
    ':P' => "\xf0\x9f\x98\x9b",
    ':o' => "\xf0\x9f\x98\xae",
    ':x' => "\xf0\x9f\x98\xa1",
    ':|' => "\xf0\x9f\x98\x90",
    ';)' => "\xf0\x9f\x98\x89",
    ':!:' => "\xe2\x9d\x97",
    ':?:' => "\xe2\x9d\x93",
);

或更好的分类显示：

Array
(
    [;-)] => 😉
    [;)] => 😉
    [:|] => 😐
    [:x] => 😡
    [:wink:] => 😉
    [:twisted:] => 😈
    [:smile:] => 🙂
    [:shock:] => 😯
    [:sad:] => 🙁
    [:roll:] => rolleyes.png
    [:razz:] => 😛
    [:oops:] => 😳
    [:o] => 😮
    [:neutral:] => 😐
    [:mrgreen:] => mrgreen.png
    [:mad:] => 😡
    [:lol:] => 😆
    [:idea:] => 💡
    [:grin:] => 😀
    [:evil:] => 👿
    [:eek:] => 😮
    [:cry:] => 😥
    [:cool:] => 😎
    [:arrow:] => ➡
    [:P] => 😛
    [:D] => 😀
    [:???:] => 😕
    [:?:] => ❓
    [:?] => 😕
    [:-|] => 😐
    [:-x] => 😡
    [:-o] => 😮
    [:-P] => 😛
    [:-D] => 😀
    [:-?] => 😕
    [:-)] => 🙂
    [:-(] => 🙁
    [:)] => 🙂
    [:(] => 🙁
    [:!:] => ❗
    [8O] => 😯
    [8-O] => 😯
    [8-)] => 😎
)

因此，如果我正确理解了以上核心评论，那么我们可以执行以下操作：

/**
 * :) as the cool emoji
 */
add_action( 'init', function() use ( &$wpsmiliestrans )
{
    if( is_array( $wpsmiliestrans ) && get_option( 'use_smilies' ) )
        $wpsmiliestrans[':)'] = $wpsmiliestrans[':cool:'];

}, 6 );

但这仅适用于预定义的笑脸键，$wp_smiliessearch才能起作用。

但是我不喜欢这种建议的方法，修改全局数组！希望还有一个更好的！

演示插件-🎅

我试图为此提出一个申请。我不确定是否已经存在，但是这里是：

<?php
/**
 * Plugin Name: Santa's Smile In December
 * Description: Change the emoji of :) to the Santa Claus emoji, but only in December
 * Plugin URI:  https://wordpress.stackexchange.com/a/218496/26350
 */
add_action( 'init', function() use ( &$wpsmiliestrans )
{
    // :) as Santa Claus
    if( 
           is_array( $wpsmiliestrans ) 
        && get_option( 'use_smilies' ) 
        && 12 == current_time( 'n' ) 
    )
        $wpsmiliestrans[':)'] = "\xF0\x9F\x8E\x85";

}, 6 );

感谢Ismael Miguel的全球评论，我相应地重写了这些摘录。

这里是新创建的车票＃35905由彼得·古森，对于一个新的smilies_trans过滤器。

更新-WordPress 4.7+

新的过滤器将在WordPress 4.7+中可用，但名称 smilies不是smilies_trans。

我们上面的例子可以写成：

add_filter( 'smilies', function( $smilies )
{
    if( isset( $smilies[':cool:'] ) )
        $smilies[':)'] = $smilies[':cool:'];

    return $smilies;
} );

或明确地与：

add_filter( 'smilies', function( $smilies )
{
    $smilies[':)'] = "\xf0\x9f\x98\x8e";

    return $smilies;
} );

该演示插件变为：

<?php
/**
 * Plugin Name: Santa's Smile In December
 * Description: Change the emoji of :) to the Santa Claus emoji, but only in December
 * Plugin URI:  https://wordpress.stackexchange.com/a/218496/26350
 */

add_filter( 'smilies', function( $smilies )
{
    // :) as Santa Claus
    if( get_option( 'use_smilies' ) && 12 == current_time( 'n' ) )
        $smilies[':)'] = "\xF0\x9F\x8E\x85";

    return $smilies;
} );

我们不再需要弄乱全局$wpsmiliestrans数组了！

根据有关使用表情符号的WordPress法典：

将您想要的具有相同名称的图像上载到服务器（例如，在wp-content / images / smilies中），并将其放入主题的function.php中：

add_filter（'smilies_src'，'my_custom_smilies_src'，10，3）;
   函数my_custom_smilies_src（$ img_src，$ img，$ siteurl）{
       返回$ siteurl。'/ wp-content / images / smilies /'.$ img;
   }

这样会将http://example.com/wp-includes/images/smilies/icon_question.gif替换为http://example.com/wp-content/images/smilies/icon_question.gif