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Technical Articles

CMS Tutorial

WordPress

How to update a post using the WordPress REST API

To update articles using WordPressRESTAPI, you need to send a POST or PUT request with authentication to the corresponding endpoint and attach the update data. First, ensure correct verification. It is recommended to use the application password or OAuth1.0a to avoid using basic authentication. Secondly, find the correct endpoint format as /wp-json/wp/v2/posts/{post_id}, and replace it with the actual article ID; then prepare the request body, including fields such as title, content, status, etc., and use cURL or tool to send the request; finally handle the response and error, check the return status code and information, and troubleshoot problems such as authentication failure and JSON format errors. Authentication is correct, path is accurate, data format is correct

Aug 14, 2025 pm 02:26 PM

How to delete orphaned post meta

Orphanedpostmeta is metadata that has not been cleaned after articles in WordPress are deleted, they occupy database space and affect performance. Orphan data will be generated when the post_id in the postmeta table is manually deleted, plug-in operation is improper, or data migration causes the post_id in the postmeta table to not exist in the posts table. The inspection method includes running SQL queries or scanning with plug-in. The deletion method includes manually executing SQL commands or cleaning them with one-click through plug-ins such as WPOptimize and AdvancedDatabaseCleaner. It is recommended to reduce orphan data generation by deleting articles in the background, using reliable plug-ins, and regularly cleaning, and automatic cleaning tasks can be set up to maintain database efficiency.

Aug 14, 2025 pm 12:47 PM

How to use themejson for block themes

theme.json can centrally manage global styles and settings of block themes. Its core approach includes: 1. Master the basic structure, including three main parts: version, settings and styles; 2. Define the color palette, font family and available units in settings; 3. Set the default style for global or specific blocks (such as paragraphs and titles) in styles; 4. Use presets to automatically generate CSS class names, and enable custom color support. Through these steps, you can unify the display effects in the editor and improve the efficiency of theme development.

Aug 14, 2025 am 11:20 AM

How to use the site health tool

Website health tools can help users quickly locate website problems and optimize performance. First, find the tool entrance such as WordPress's "Website Health" menu; second, check the overall score and core indicators such as PHP version, error log and database status; then check for performance issues that affect loading time, image compression and caching mechanism and optimize; finally, it is recommended to review regularly every month, especially after updating plug-ins, changing servers or publishing a large amount of content, to ensure the stable operation of the website.

Aug 13, 2025 am 09:46 AM

How to understand WordPress action and filter priority

Understanding WordPress's action and filter priority is actually to figure out "when should you do what". In WordPress development, action and filter are two types of hooks, which allow you to insert your own code at a specific time. The priority determines the execution order of these hooks. By default, if you do not specify priority, it will use the default value of 10. But when you need to control the execution sequence between multiple hooks, priority becomes very important. The basic difference between Action and Filter Action: It is executed when an event occurs.

Aug 13, 2025 am 05:08 AM

How to use webpack for Gutenberg blocks

TouseWebpackeffectivelyforbuildingcustomGutenbergblocks,startbyinstallingWebpackandnecessaryloaderssuchasbabel-loader,css-loader,andstyle-loader.1)Setupabasicwebpack.config.jswithentryandoutputpaths,handlingJSviaBabelandCSSwithappropriateloaders.2)Fo

Aug 13, 2025 am 01:53 AM

How to use WP_Query to fetch posts

WP_Query is the core class used in WordPress to obtain articles and supports multiple query conditions. 1. The basic usage includes defining parameters such as 'post_type' and 'posts_per_page' and creating instances; 2. You can filter articles by category ID, classification slug or tags; 3. Support custom article types and filtering through custom fields, such as 'meta_key' and 'meta_value'; 4. Advanced functions include comparison operators and sorting options such as 'orderby' and 'order'; 5. Pay attention to avoid common errors when using, such as using query_posts() and forgetting to call wp_reset_postdat

Aug 13, 2025 am 01:38 AM

How to authenticate with the WordPress REST API

ToauthenticatewiththeWordPressRESTAPI,youcanchoosefromseveralmethodsdependingonyourusecase.1.UseBasicAuthenticationforlocaldevelopmentortestingbyinstallingtheApplicationPasswordsplugin,generatinganapppassword,andincludingyourusernameandpasswordinrequ

Aug 12, 2025 am 05:03 AM

How to use Xdebug with WordPress

To debug WordPress using Xdebug, you must first install and configure Xdebug correctly, then set up the IDE to receive debug information, and finally trigger debugging through the browser. 1. Install Xdebug and enable it in php.ini, set the mode, host and port; 2. Install the PHPDebug plug-in in the IDE (such as VSCode) and configure the launch.json file; 3. Use the browser plug-in or manually add parameters to trigger the debugging session; 4. Pay attention to path mapping, port opening and version compatibility issues.

Aug 12, 2025 am 04:43 AM

How to use the Shortcode API properly

Using the shortcode API requires mastering the structure and specifications. 1. Register the shortcode using the add_shortcode() function, specify the name and callback function, such as functionmy_custom_shortcode() returns the content and register it as add_shortcode('my_shortcode','my_custom_shortcode'); 2. The shortcode that supports parameters obtains attributes through $atts, and sets the default value with shortcode_atts() to avoid errors; 3. The nested content is processed through the third parameter $content, and supports internal nesting with do_shortcode(), and cleans the filtering inside before output.

Aug 12, 2025 am 02:49 AM

How to secure WordPress cookies

TosecureWordPresscookies,firstenableHTTPSsite-wide,thensetSecureandHttpOnlyflags,andfinallylimitcookiescopeviaSameSiteandpathattributes.UseHTTPSbyconfiguringSSLinwp-config.phpandenforcingFORCE_SSL_ADMIN.Setsession.cookie_secure=1andsession.cookie_htt

Aug 12, 2025 am 02:25 AM

How to fix database connection errors in WordPress

When encountering WordPress database connection errors, the most common reason is that the database cannot be accessed normally. You can troubleshoot through the following steps: 1. Check whether the database name, user name, password and DB_HOST in the wp-config.php file are correct, especially if the host is replaced or the settings may not be updated; 2. Confirm whether the database service is running normally, check the database status through the control panel, phpMyAdmin or the command line; 3. Clear the cache and check plug-in conflicts, clear all types of caches and disable plug-ins to check one by one; 4. Check whether the database is corrupt, and try to repair the table structure using phpMyAdmin or the built-in repair function of the system.

Aug 11, 2025 pm 02:53 PM

Database connection error

How to debug REST API requests

To debug RESTAPI requests, you must first confirm whether the request structure is correct, including URL, HTTP methods, Headers and Body. 1. Check whether the URL is complete and accurate to avoid 404 due to spelling errors; 2. Use the correct HTTP method to prevent 405 from returning due to mismatch of methods; 3. Check the Headers content, such as Content-Type and Authorization; 4. Ensure that the Body data format is consistent with the interface requirements. Then use the debugging tool to analyze the request details, such as the browser developer tool to view the network panel, or the Postman and curl manual test interfaces, and use the packet capture tool to analyze the HTTPS request content if necessary. Then judge the problem based on the response status code

Aug 11, 2025 pm 01:18 PM

How to set up a staging environment for WordPress

TosetupaWordPressstagingenvironment,useyourhostingprovider’sbuilt-instagingtoolforspeedandsimplicity.1.CheckyourhostingdashboardorcPanelfora“Staging”sectionandcloneyourlivesitewithoneclick.2.Alternatively,usepluginslikeWPStaging,Duplicator,orAll-in-O

Aug 11, 2025 pm 01:13 PM