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Technical Articles

CMS Tutorial

How to manage cron jobs with WP-CLI

TomanagecronjobsinWordPressusingWP-CLI,youcanlist,run,schedule,anddeleteeventsviacommand-linetools.1.Usewpcroneventlisttocheckactivecroneventsandfilterwith--hook=some_hook_name.2.Manuallytriggerataskwithwpcroneventrunsome_hook_name.3.Schedulenewtasks

Jul 21, 2025 am 12:50 AM

How to escape and sanitize data in WordPress

Data escape and disinfection are two key steps in WordPress security development. 1. Data disinfection (Sanitize) is used for safe storage and is processed before saving user input, such as using functions such as sanitize_text_field() and sanitize_email() to clean up data; 2. Data escape (Escape) is used for safe display, and is processed when output to the front end, such as using functions such as esc_html() and esc_url() to prevent script execution; 3. Use appropriate hooks and function libraries, such as wp_kses_post() to filter rich text content, add_query_arg() to safely operate URL parameters; 4. Pay attention to different scenarios

Jul 21, 2025 am 12:17 AM

Data Security

How to update plugins using WP-CLI

Updating plug-ins using WP-CLI requires 1. Log in to the server through SSH and enter the website directory; 2. Execute wppluginupdateplugin-slug to update a single plug-in or wppluginupdate--all to update all plug-ins; 3. Check permissions, disk space and conflicting plug-ins when encountering problems. There is no need to log in to the background throughout the process, but you need to pay attention to the backup and compatibility risks, and you can assist in troubleshooting problems through --dry-run or --debug parameters.

Jul 20, 2025 am 01:07 AM

How to lazy load images in WordPress

If too many images are loaded at once, it will not only slow down the page speed, but also waste bandwidth. Implementing lazy image loading (LazyLoad) on WordPress can effectively improve website performance, especially for sites with more pictures. What is lazy image loading? Lazy loading is an optimization technique, which refers to the loading of pictures in the corresponding area when the user scrolls to a certain position on the page. This can reduce the amount of data initially loaded by the web page, speed up the loading speed of the first screen, and improve user experience and page ratings. WordPress has already supported native lazy loading attributes (loading="lazy") for labels by default after version 5.5, but this alone is not comprehensive enough, especially for old browsers.

Jul 20, 2025 am 01:03 AM

Lazy loading of images

How to interact with the WordPress REST API

TheWordPressRESTAPIisusedtoprogrammaticallymanageandretrievecontentinJSONformatthroughbuilt-inendpoints.1.Coreendpointslike/posts,/media,and/userssupportstandardHTTPmethods(GET,POST,PUT,DELETE)forinteractingwithcontent.2.AuthenticationviaApplicationP

Jul 20, 2025 am 12:45 AM

What is the WordPress loop

TheLoop is the core mechanism used in WordPress theme development to obtain and display article content from a database. It checks whether there are articles that need to be displayed through the PHP code block. If so, it loops through each article and outputs title, content and other information in the set format. By default, Loop displays an article list on the home page, archive page, or search result page, and only the current article is processed on the single article page. Its basic structure includes having_posts() to check whether there is an article, the_post() loads the current article data, and combining while and if statements to ensure that the loop is executed correctly. Custom Loop can be implemented through WP_Query modifying query parameters, such as displaying a specific category, an article of a certain author or

Jul 20, 2025 am 12:22 AM

How to add capabilities to user roles

The key to adding permissions to user roles is to clarify role responsibilities and reasonably allocate operation permissions. First, the user role is a collection of permissions, such as administrators, editors, etc., while permissions are specific operational capabilities, such as publishing articles, exporting data, etc.; secondly, the methods of adding permissions in different systems are different. WordPress can be implemented through plug-ins or code. Laravel can use the Spatie\Permission package to manage permissions. It is recommended to establish three tables for permission management by self-built systems. Finally, permission settings need to avoid problems such as arbitrary authorization of super permissions, excessive or fine permission granularity, and unclear permission names, and regularly review the rationality of permissions to ensure the system's security and efficient collaboration.

Jul 19, 2025 am 12:23 AM

How to migrate a multisite site to a single site

To migrate subsites in WordPress multi-site to a single site, you need to perform the following steps in turn: 1. Use WordPress's own export tool to export articles, pages, etc.; 2. Export the table with the corresponding prefix from the database and rename it to a single-site format, and replace the old domain name at the same time; 3. Manually migrate media files and repair paths; 4. Configure the themes, plug-ins and settings of the new site and conduct tests. The entire process requires attention to data cleaning, URL replacement and plug-in compatibility to ensure normal functions after migration.

Jul 19, 2025 am 12:18 AM

How to enable WP_DEBUG mode

To enable WordPress's WP_DEBUG mode, you need to edit the wp-config.php file. 1. Log in to the host background or use FTP to find and download wp-config.php; 2. Open and back up the original file with a text editor; 3. Add define('WP_DEBUG',true); optionally add define('WP_DEBUG_DISPLAY',false); and define('WP_DEBUG_LOG',true); and upload the file after saving. WP_DEBUG is a debugging tool for WordPress, used to display PHP error messages, only for development environment use, production environment should be related.

Jul 19, 2025 am 12:13 AM

How to use the WordPress Customizer API

The key steps to using the WordPress customizer API are as follows: 1. Add settings, control and section to the customize_register hook to register custom options, such as adding a website subtitle; 2. Set transport to postMessage and cooperate with JavaScript to achieve instant preview effects; 3. Use panel and section to organize custom option structures to improve user experience; master these core concepts and techniques to achieve flexible theme customization functions.

Jul 19, 2025 am 12:11 AM

How to update data using wpdb

In WordPress plug-in or theme development, the update() method of the wpdb class can be used to achieve database record updates. The basic structure is: $wpdb->update($table,$data,$where,$format,$where_format). 1.$table specifies the table name, such as $wpdb->prefix.'my_table'; 2.$data is an associative array, indicating the data to be updated, such as ['column1'=>'value1']; 3.$where is also an associative array, specifying the update conditions, such as ['id'=>123]; 4.$forma

Jul 18, 2025 am 01:13 AM

How to use Composer with WordPress

Using Composer to manage WordPress projects can improve dependency management and automatic loading efficiency, especially for multi-plug-ins, themes and custom development. 1. You can install WordPress core and plug-ins through johnpbloch/wordpress and wpackagist; 2. Use autoload configuration to realize automatic loading of namespace classes; 3. Use Composer to introduce third-party libraries such as Guzzle, and manually introduce vendor/autoload.php; 4. It is recommended to place vendor in the root directory and ignore Git commits; 5. Perform composerupdate carefully in the production environment. After adapting to this process, the project maintenance and

Jul 18, 2025 am 01:06 AM

How to use object caching in WordPress

PersistentobjectcachinginWordPressimprovessiteperformancebystoringfrequentlyaccesseddataforreuse.Itreducesdatabasequeriesandserverload,especiallyforsiteswithheavytrafficorlogged-inusers.Therearethreesetupmethods:usingRedis/Memcachedforbestperformance

Jul 18, 2025 am 12:32 AM

How to create a custom 404 page

Custom 404 pages improve user experience and reduce bounce rates, as default pages often lack navigation. Its functions include: 1. Provide navigation options such as homepage and popular pages; 2. Maintain brand consistency; 3. Increase user stay time. When creating, you should clearly inform the error status, provide jump buttons, search boxes and site map links, and maintain a simple style. Different platforms such as WordPress, Shopify or static websites can be set up in their own ways to ensure that users can still find the content they need smoothly even if they visit invalid pages, thereby maintaining the website image and usability.

Jul 18, 2025 am 12:07 AM