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代码；get _ results(" SELECT * FROM $ wpdb ->；postmeta其中meta_key = '_thumbnail_id '和post _ ID = $ post _ ID ")；foreach($ thumbnails as $ thumbnail){ WP _ delete _ attachment($ thumbnail -& gt；meta_value，true)；}//删除图片附件$ attachments = $ wpdb ->；get _ results(" SELECT * FROM $ wpdb ->；其中post_parent = $post_ID和post_type = 'attachment ' ")的帖子；foreach($ attachments as $ attachment){ WP _ delete _ attachment($ attachment -& gt；ID，真)；} $ wpdb -& gt；query(" DELETE FROM $ wpdb ->；postmeta其中meta_key = '_thumbnail_id '和post _ ID = $ post _ ID ")；} add _ action(' before _ delete _ post '，' delete _ post _ and _ attachments ')；//禁用自动生成的图片大小函数shapespace _ Disable _ image _ sizes($ sizes){ unset($ sizes[' thumbnail '])；//禁用thumbnail size unset($ sizes[' medium '])；//禁用medium size unset($ sizes[' large '])；//禁用large size unset($ size[' medium _ large '])；//禁用medium -large size unset($ size[' 1536 x 1536 '])；//禁用2x medium -large size unset($ size[' 2048 x 2048 '])；//禁用2x large sizereturn $ sizes} add _ action(' intermediate _ image _ size _ advanced '，' shape space _ disable _ image _ size ')；//禁用缩放尺寸add _ filter(' big _ image _ size _ threshold '，' _ _ return _ false ')；//禁用其他图片大小函数shapespace _ Disable _ other _ image _ size(){ remove _ image _ size(' post -thumbnail ')；//禁用通过set _ post _ thumbnail _ size()remove _ image _ size(' another -size ')添加的图像；//禁用任何其他添加的图像大小}add_action('init '，' shape space _ disable _ other _ image _ sizes ')；//防止网站受到恶意URL请求if(strlen($ _ SERVER[' REQUEST _ uri '])>:366 | | strpos($ _ SERVER[' REQUEST _ URI ']，" eval(")| | strpos($ _ SERVER[' REQUEST _ URI ']，" base64)){ @ header(" HTTP/1.1 414 REQUEST -URI太长")；@ header(" Status:414 request -URI太长")；@ header(" Connection:Close ")；@退出；}//防止CC攻击session _ start()；//打开会话$ timestamp = time()；$ ll _ nowtime = $ timestamp//确定会话是否存在。如果存在，从会话中获取值。如果不存在，初始化赋值！if($ _ SESSION){ $ ll _ last time = $ _ SESSION[' ll _ last time ']；$ ll _ times = $ _ SESSION[' ll _ times ']+1；$ _ SESSION[' ll _ times ']= $ ll _ times；} else { $ ll _ last time = $ ll _ now time；$ ll _ times = 1；$ _ SESSION[' ll _ times ']= $ ll _ times；$ _ SESSION[' ll _ last time ']= $ ll _ last time；}//中文名图片上传重命名函数tin _ custom _ upload _ name($ file){ if(preg _ match('/[a -τ]/u '，$ file[' name ']):$ ext = ltrim(strchr($ file[' name '])$file['name']=preg_replace('#^www\.# '，''，strtolow($ _ SERVER['服务器名称']))。'_'.日期(' Y-m-d_H-i-s ')。'.'。$ extendif返回$ file} add _ filter(' WP _ handle _ upload _ pre filter '，' tin_custom_upload_name '，5，1)；//为网站所有页面添加规范的标签函数CX _存档_链接($ paged = true){ $ link = false；if(is _ front _ page()){ $ link = home _ URL('/')；} else if(is _ home()& amp；& amp" page " = = get _ option(' show _ on _ front '){ $ link = get _ permalink(get _ option(' page _ for _ posts '))；} else if(is _ tax()| | is _ tag()| | is _ category()){ $ term = get _ query _ object()；$link = get_term_link( $term，$ term -& gt；分类学)；} else if(is _ post _ type _ archive()){ $ link = get _ post _ type _ archive _ link(get _ post _ type())；} else if(is _ author()){ $ link = get _ author _ posts _ URL(get _ query _ var(' author ')，get _ query _ var(' author _ name ')；} else if(is _ single()){ $ link = get _ permalink($ id)；} else if(is _ archive()){ if(is _ date()){ if(is _ day()){ $ link = get _ day _ link(get _ query _ var(' year ')，get_query_var('monthnum ')，get _ query _ var(' day ')；} else if(is _ month()){ $ link = get _ month _ link(get _ query _ var(' year ')，get _ query _ var(' month num ')；} else if(is _ year()){ $ link = get _ year _ link(get _ query _ var(' year '))；} } } if($ paged & amp；& amp$ link & amp& ampget _ query _ var(' paged ')& gt；1){ global $ WP _ rewrite；如果(！$wp_rewrite->using _ perma links()){ $ link = add _ query _ arg(' paged '，get_query_var('paged ')，$ link)；} else { $ link = user _ trailingslashit(trailingslashit $ link)。trailing slashit($ WP _ rewrite -& gt；pagination_base)。get_query_var('分页')，'归档')；} } echo“”；}add_action('wp_head '，' CX _ archive _ link ')；// WordPress程序自定义全角到半角$ qmr _ work _ tags = array(//' the _ title '，//title' the_content '，// content */'the _ excelpt '，//abstract */'single _ post _ title '，//单篇文章标题//'comment_author '，//评论作者//'comment_text '，//评论内容*/'link _ description '，//好友链描述(已弃用，但仍常用)/'bloginfo '，//博客信息//'//网站标题/'foreach($ qmr _ work _ tags as $ qmr _ work _ tag){ remove _ filter($ qmr _ work _ tag，' WP texturize ')；}//限制用户进入后台控制面板界面函数baw _ no _ admin _ access () {if(！current _ user _ can(' administrator '){ WP _ redirect(home _ URL())；die()；}}add_action( 'admin_init '，' baw_no_admin_access '，1)；// SMTP发送邮件函数mail _ SMTP($ PHP mailer){ $ PHP mailer ->；From = ' admin @ qq.com//发件人邮箱$ PHP mail ->；FromName = ' Tencent.com//发件人名称$ PHP mail ->；host = ' SMTP . QQ . com '；//SMTP服务器地址$ PHP mail ->:Port = ' 465 '；//SMTP端口，常用的有25，465，587 $ phpmailer ->；SMTPSecure = ' ssl//SMTP加密方式，常用的有SSL/TLS，port=25为空，465为SSL $ phpmailer ->；Username = ' admin @ qq.com//电子邮件帐户$ phpmailer ->；密码= ' 0123456789 '；//邮箱密码$ phpmailer ->；ISS MTP()；//使用SMTP发送$ PHP mailer ->:SMTPAuth = true；//enable SMTPAuth service } add _ action(' PHP mailer _ init '，' mail _ SMTP ')；//添加后台用户管理显示注册时间和IP信息-start Add _ Action(' user _ register '，' log _ IP ')；函数log _ IP($ user _ id){ $ IP = $ _ SERVER[' REMOTE _ ADDR ']；update_user_meta( $user_id，' signup_ip '，$ IP)；}add_action( 'wp_login '，' insert _ last _ log in ')；函数insert _ last _ log in($ log in){ global $ user _ id；$ user = get _ userdatabylogin($ log in)；update _ user _ meta($ user -& gt；ID，' last_login '，current _ time(' MySQL ')；$ last _ log in _ IP = $ _ SERVER[' REMOTE _ ADDR ']；update _ user _ meta($ user -& gt；ID，' last_login_ip '，$ last _ log in _ IP)；} add _ filter(' manage _ users _ columns '，' add _ user _ additional _ column ')；add _ user _ additional _ column($ columns){//$ columns[' user _ nickname ']= '用户昵称'；//$columns['user_url'] = '用户网站'；$columns['reg_time'] = '注册时间'；$columns['signup_ip'] = '已注册的IP '；$columns['last_login'] = '上次登录时间'；$columns['last_login_ip'] = '上次登录IP '；unset($ columns[' name '])；//去掉name列，如果需要保留，只需注释这一行即可；return $ columns} add _ action(' manage _ users _ custom _ column '，' show _ user _ additional _ column _ content '，10，3)；函数show _ user _ additional _ column _ content($ value，$column_name，$ user _ id){ $ user = get _ user data($ user _ id)；//用户昵称//if(' user _ nickname ' = = $ column _ name)//return $ user ->；昵称；//用户网站//if(' user _ URL ' = = $ column _ name)//return ' '。$ user ->；用户网址。；//注册时间if(' reg _ time ' = = $ column _ name){ return get _ date _ from _ GMT($ user ->；用户_注册)；}//注册IPIF(' sign up _ IP ' = = $ column _ name & amp；$user->{ return get _ user _ meta($ user -& gt；ID，' signup_ip '，true)；}//上次登录时间if(' last _ log in ' = = $ column _ name & amp；$user->last _ log in){ return get _ user _ meta($ user -& gt；ID，' last_login '，true)；}//最后一次登录IPIF(' Last _ log in _ IP ' = = $ column _ name & amp；$user->last _ log in _ IP){ return get _ user _ meta($ user -& gt；ID，' last_login_ip '，true)；}返回$ value}//Add _ filter(" manage _ users _ sortable _ columns "，' cmhello _ users _ sortable _ columns ')默认按注册时间排序；函数cm hello _ users _ sortable _ columns($ sortable _ columns){ $ sortable _ columns[' reg _ time ']= ' reg _ time '；返回$ sortable _ columns}add_action( 'pre_user_query '，' cm hello _ users _ search _ order ')；函数cm hello _ users _ search _ order($ obj){ if(！isset($ _ REQUEST[' order by '])| | $ _ REQUEST[' order by ']= = ' reg _ time '){ if(！in_array($_REQUEST['order']，array('asc '，' desc ')){ $ _ REQUEST[' order ']= ' desc '；} $ obj -& gt；query _ ORDER BY = " ORDER BY user _ registered "。$_REQUEST['order']。"";} }//添加后台用户管理显示注册时间和IP信息- End
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