WordPress优化的过程与记录

1. WordPress删除文章同时自动删除缩略图及图片附件。
2. 把以下代码加入你的主题 functions.php

/* 删除文章时删除图片附件 */
function delete_post_and_attachments($post_ID) {
    global $wpdb;
    //删除特色图片
    $thumbnails = $wpdb->get_results( "SELECT * FROM $wpdb->postmeta WHERE meta_key = '_thumbnail_id' AND post_id = $post_ID" );
        foreach ( $thumbnails as $thumbnail ) {
        wp_delete_attachment( $thumbnail->meta_value, true );
    }
    //删除图片附件
    $attachments = $wpdb->get_results( "SELECT * FROM $wpdb->posts WHERE post_parent = $post_ID AND post_type = 'attachment'" );
        foreach ( $attachments as $attachment ) {
        wp_delete_attachment( $attachment->ID, true );
    }
    $wpdb->query( "DELETE FROM $wpdb->postmeta WHERE meta_key = '_thumbnail_id' AND post_id = $post_ID" );
}
add_action('before_delete_post', 'delete_post_and_attachments');

1. wordpress禁止生成缩略图教程
2. 把以下代码加入你的主题 functions.php

// 禁用自动生成的图片尺寸
function shapeSpace_disable_image_sizes($sizes) {
    
    unset($sizes['thumbnail']);    // disable thumbnail size
    unset($sizes['medium']);       // disable medium size
    unset($sizes['large']);        // disable large size
    unset($sizes['medium_large']); // disable medium-large size
    unset($sizes['1536x1536']);    // disable 2x medium-large size
    unset($sizes['2048x2048']);    // disable 2x large size
    
    return $sizes;
    
}
add_action('intermediate_image_sizes_advanced', 'shapeSpace_disable_image_sizes');
 
// 禁用缩放尺寸
add_filter('big_image_size_threshold', '__return_false');
 
// 禁用其他图片尺寸
function shapeSpace_disable_other_image_sizes() {
    
    remove_image_size('post-thumbnail'); // disable images added via set_post_thumbnail_size() 
    remove_image_size('another-size');   // disable any other added image sizes
    
}
add_action('init', 'shapeSpace_disable_other_image_sizes');

1. timthumb.php缩略图文件 默认不显示外链图片  此设置开放所有域名
2. timthumb.php文件设置

if (!defined('ALLOW_ALL_EXTERNAL_SITES')) define('ALLOW_ALL_EXTERNAL_SITES', false);
  
改成

if (!defined('ALLOW_ALL_EXTERNAL_SITES')) define('ALLOW_ALL_EXTERNAL_SITES', TRUE);  

子比用-未登录模糊文章图片functions.php

//未登录文章详情页内图片模糊
function unlogin_css(){
  echo '<style>
  .article-content img {
  -webkit-filter: blur(10px)!important;
    -moz-filter: blur(10px)!important;
    -ms-filter: blur(10px)!important;
    filter: blur(6px)!important;}
  .swiper-close img {
  -webkit-filter: blur(10px)!important;
    -moz-filter: blur(10px)!important;
    -ms-filter: blur(10px)!important;
    filter: blur(6px)!important;}
    </style>';
}
if( !is_user_logged_in()) {add_action( 'wp_head', 'unlogin_css' );};

子比添加文章评论常用语功能

在后台主题设置[自定义CSS样式]添加下面CSS代码：

/*常-用-语样式*/
.wiiuii-words-li{margin:5px auto;padding:5px;background:var(--body-bg-color);border-radius:var(--main-radius)}
.wiiuii-words-li:hover{background:var(--float-btn-bg)}

在后台主题设置[自定义javascript代码]添加下面jQuery代码：

// 评-论-常-用-语JS
$('.wiiuii-words-li').on('click', function() {
   var $wiiuii_comment = $('#comment');
    var wiiuii_com_text = $(this).find('span').text();
    var wiiuii_com_original = $wiiuii_comment.val();
    $wiiuii_comment.val(wiiuii_com_original ? wiiuii_com_original + '  ' + wiiuii_com_text : wiiuii_com_text);
    $('.wiui_words').removeClass('open');
});

第一步：在“../zibll/template/comments.php”子比主题的template目录下“comments.php”文件120行左右位置添加下面代码：

// 常-用-语函数
if (_pz('comment_words', true)) {
echo zib_get_input_expand_but('wiui_words');
}

第二步：在“../zibll/inc/functions/functions.php”子比主题的template目录下“functions.php”文件大概1676行左右位置添加下面代码：

// cmdeye常-用-语函数
    if ('wiui_words' == $type) {
        $but = '<a class="but btn-input-expand mr6" href="javascript:;"><i class="fa fa-fw fa-comment-o"></i><span class="hide-sm">常用语</span></a>';
        // 下面是自定义常用语，自己自定义喜欢常用语，最后不超过10条
        $wiiuii_words_args = array('谢谢博主分享！', '博主NB，666', '感谢楼主分享！', '感谢大佬分享！', '教程很好用，谢谢！', '太喜欢了啊，爱了爱了!!', '学习到了，感谢cmdeye博客。', '感谢分享，完全可以使用!');
        foreach ($wiiuii_words_args as $wiiuii_word) {
            $wiui_word_index++;
            $wiui_words .= '<li class="wiiuii-words-li"><b>' . $wiui_word_index . '、</b><span>' .$wiiuii_word . '</span>' . '</li>';
        }
        $dropdown = '<div class="dropdown-code">';
        $dropdown .= '<span>请选择评论常用语：</span>';
        $dropdown .= '<ul>';
        $dropdown .= $wiui_words;
        $dropdown .= '</ul>';
        $dropdown .= '</div>';
    }