1.//後臺登錄限制

add_action( ‘init‘, ‘blockusers_init‘ );
function blockusers_init() {
    // If accessing the admin panel and not an admin
    if ( (is_admin() && !stripos($_SERVER[‘REQUEST_URI‘],‘media-upload.php‘)) && is_user_logged_in() && !current_user_can(‘level_10‘) &&  (!defined
 
( ‘DOING_AJAX‘ ) || !DOING_AJAX) ) {
        // Redirect to the homepage
        wp_redirect( home_url() );
        exit;
    }
}

說明：

media-upload.php 針對文件上傳，DOING_AJAX針對 ajax調用！
2.角色名稱修改

function keshop_change_role_name() {
  global $wp_roles , $current_user;
         $role = $current_user->roles[0];
        
 
if (!isset($wp_roles)) {
          $wp_roles = new WP_Roles();
        }
       
        $wp_roles->roles[‘subscriber‘][‘name‘] = ‘會員‘;
        $wp_roles->role_names[‘subscriber‘]    = ‘會員‘;

        $wp_roles->roles[‘author‘][‘name‘] = ‘市級會員‘;
        $wp_roles->role_names[‘author‘]    = ‘市級會員‘;

        
 
$wp_roles->roles[‘editor‘][‘name‘] = ‘省級會員‘;
        $wp_roles->role_names[‘editor‘]    = ‘省級會員‘;
}
add_action(‘init‘, ‘keshop_change_role_name‘);

只是針對顯示名稱。

3.默認文章類型的相關字段的更改

function change_post_menu_label() {
    global $menu;
    global $submenu;
    $menu[5][0] = ‘新聞‘;
    $submenu[‘edit.php‘][5][0] = ‘新聞‘;
    $submenu[‘edit.php‘][10][0] = ‘添加新聞‘;
    $submenu[‘edit.php‘][15][0] = ‘分類‘; // Change name for categories
    $submenu[‘edit.php‘][16][0] = ‘標簽‘; // Change name for tags
    echo ‘‘;
}
 
function change_post_object_label() {
        global $wp_post_types;
        $labels = &$wp_post_types[‘post‘]->labels;
        $labels->name = ‘新聞‘;
        $labels->singular_name = ‘新聞‘;
        $labels->add_new = ‘添加新聞‘;
        $labels->add_new_item = ‘添加新聞‘;
        $labels->edit_item = ‘編輯新聞‘;
        $labels->new_item = ‘新聞‘;
        $labels->view_item = ‘查看新聞‘;
        $labels->search_items = ‘搜索新聞‘;
        $labels->not_found = ‘未發現‘;
        $labels->not_found_in_trash = ‘回收站為空‘;
    }
add_action( ‘init‘, ‘change_post_object_label‘ );
add_action( ‘admin_menu‘, ‘change_post_menu_label‘ );

4.自定義篩選，字段值存的是數組，會被自動序列化。

‘meta_query‘  => array(
        array(
          ‘key‘  => ‘user_select‘,
          ‘value‘=> serialize(strval($userid)),
          ‘compare‘=> ‘LIKE‘
        ) 

5.圖片上傳存以附件

   require_once(ABSPATH . "wp-admin" . ‘/includes/image.php‘);
        require_once(ABSPATH . "wp-admin" . ‘/includes/file.php‘);
        require_once(ABSPATH . "wp-admin" . ‘/includes/media.php‘);
        $useravatar = media_handle_upload(‘newavatar‘,0);

6.圖片數據為base64位上傳

	$upload_dir = wp_upload_dir();
        $imagedata = base64_decode($_POST[‘imgdata‘]);
	// $filename = md5(uniqid(rand(), true));
	$filename = $userid;	
	$file = $upload_dir[‘basedir‘] . ‘/photos/‘.$filename.‘.png‘;
	$imageurl  = $upload_dir[‘baseurl‘].‘/photos/‘.$filename.‘.png‘;
	file_put_contents($file,$imagedata);

	/*attac user*/	

   // The ID of the post this attachment is for.
   $parent_post_id = 0;

   // Check the type of file. We‘ll use this as the ‘post_mime_type‘.
   $filetype = wp_check_filetype( basename( $file ), null );

   // Get the path to the upload directory.
   $wp_upload_dir = wp_upload_dir();
	$attachment = array(
	‘guid‘           => $imageurl, 
	‘post_mime_type‘ => $filetype[‘type‘],
	‘post_title‘     => preg_replace( ‘/\.[^.]+$/‘, ‘‘, basename( $file ) ),
	‘post_content‘   => ‘‘,
	‘post_status‘    => ‘inherit‘
	);
	$attach_id = wp_insert_attachment( $attachment, $file, $parent_post_id );
	update_user_meta($userid , ‘newavatar‘ ,$attach_id);

7.正則圖片提取

//content 正則提取圖片
function get_img_src($string){
    $preg = ‘/<img.*?src=[\"|\‘]?(.*?)[\"|\‘]?\s.*?>/i‘;
    preg_match_all($preg, $string, $imgArr);
    return $imgArr;
}
  $imgs = get_img_src($meeting_img_stirng);
  $pattern =‘/(alt|title|src)=("[^"]*")/i‘;
  preg_match_all($pattern,$meeting_img_stirng,$match);

8.郵件發送參考

$email = get_option(‘admin_email‘);

$headers  = array(‘Content-Type: text/html; charset=UTF-8‘);

wp_mail($email,$subject="思域留言郵件通知",$content,$headers);



$headers[] = ‘Content-Type: text/html; charset=UTF-8‘;
$headers[] = ‘From: Me Myself <[email protected]>‘;
wp_mail($email,$subject="密碼找回",$content,$headers);

9.人性化時間顯示

//顯示幾秒幾分前
function timeFormat($timeInt,$format=‘Y-m-d H:i:s‘){ 
    if(empty($timeInt)||!is_numeric($timeInt)||!$timeInt){ 
        return ‘‘; 
    } 
    $d=time()-$timeInt; 
    if($d<0){ 
        return ‘‘; 
    }else{ 
        if($d<60){ 
            return $d.‘秒前‘; 
        }else{ 
            if($d<3600){ 
                return floor($d/60).‘分鐘前‘; 
            }else{ 
                if($d<86400){ 
                    return floor($d/3600).‘小時前‘; 
                }else{ 
                    if($d<259200){//3天內 
                        return floor($d/86400).‘天前‘; 
                    }else{ 
                        return date($format,$timeInt); 
                    } 
                } 
            } 
        } 
    } 
} 

10.代碼過濾

function uhtml($str)     
{     
    $farr = array(     
        "/\s+/", //過濾多余空白     
         //過濾 <script>等可能引入惡意內容或惡意改變顯示布局的代碼,如果不需要插入flash等,還可以加入<object>的過濾     
        "/<(\/?)(script|i?frame|style|html|body|title|link|meta|\?|\%)([^>]*?)>/isU",    
        "/(<[^>]*)on[a-zA-Z]+\s*=([^>]*>)/isU",//過濾javascript的on事件     
   );     
   $tarr = array(     
        " ",     
        "＜\1\2\3＞",//如果要直接清除不安全的標簽，這裏可以留空     
        "\1\2",     
   );     
  $str = preg_replace( $farr,$tarr,$str);     
   return $str;     
}  

wp小功能