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Technical Articles

CMS Tutorial

How to update WordPress core manually

Manually updating WordPress core files is suitable for situations where server permissions are restricted or need to be carefully controlled. Common methods include: 1. Use WordPress built-in update function (need to be accessible in the background and allowed to be automatically written); 2. Manually replace core files through FTP (need to back up the website and database, upload new versions of wp-includes, wp-admin and root directory files, but retain wp-config.php and wp-content); 3. Update using WP-CLI command line tools (execute wpcoreupdate and wpcoreupdate-db). After the update, you should check the compatibility of the website front desk and backend plug-in themes and page loading status, and clear the

Sep 05, 2025 am 07:57 AM

How to create custom database tables in WordPress

Creating custom database tables in WordPress follows a standard process. 1. Why build a table? When managing a large amount of structured data (such as orders, inventory), it can improve query efficiency, keep the data structure clear and enhance plug-in independence, but simple data should be given priority to using built-in mechanisms. 2. How to build a table? Use the dbDelta function to execute table building code when the plugin is activated, ensure multi-site compatibility through $wpdb->prefix, and correctly write the full field type. 3. How to operate after building the table? Use the $wpdb object to add, delete, modify and check, and use preprocessing to prevent SQL injection. 4. Should I delete the table when deleting the plug-in? Temporary data should be deleted, important data should be retained, and can be accessed through register_unins

Sep 05, 2025 am 07:32 AM

How to prevent brute force attacks on wp-loginphp

Limiting the number of login attempts, changing the default login address, enabling two-step verification, using strong username and password policies, and cooperating with server-level protection can effectively prevent WordPress login pages from being brute-forced. Specific practices include: 1. Use plug-ins to limit the number of login failures, such as locking for 10 minutes after 5 failures; 2. Change the default /wp-login.php address to a path that is not easy to guess, such as /my-secret-login; 3. Enable plug-ins such as Google Authenticator or TwoFactor to achieve two-step verification. It is recommended to use an authenticator app; 4. Set a strong password of more than 12 digits containing upper and lower case letters, numbers and symbols, and avoid using admin

Sep 04, 2025 am 02:07 AM

How to use nonces in WordPress for security

TousenoncesinWordPresssecurely,alwaysgenerateandverifythemforforms,URLs,andAJAXrequests.1.Generateanoncewithwp_create_nonce()orwp_nonce_field()forforms.2.Verifyitusingwp_verify_nonce(),ensuringactionnamesmatch.3.ForAJAX,passthenonceinJavaScriptandval

Sep 04, 2025 am 01:47 AM

How to override parent theme templates in a child theme

In WordPress development, the method to safely modify the parent theme template file is to overwrite it through child themes. The first step is to create a file structure in the child theme that is exactly the same as the parent theme template file path. For example, the parent theme has single.php or template-parts/content-single.php, and the child theme also creates files with the same path and file name. 1. Ensure that the path and file names are exactly matched; 2. There is no need to copy all template files, only copy the parts that need to be modified; 3. For topics such as WooCommerce that use template replacement mechanism, you need to confirm whether sub-theme coverage is supported, and store files such as woocommerce/single-p according to the correct path

Sep 03, 2025 am 08:56 AM

What are the WordPress installation requirements

WordPress installation must meet basic environmental requirements. 1. Server environment: Supports PHP7.4, MySQL5.6 /MariaDB10.1, Apache/Nginx/IIS and it is recommended to enable HTTPS; 2. Space and permissions: at least 50MB disk space, correct database permissions and file permission settings (Catalog 755, File 644, Upload directory 775); 3. Installation method: You can choose manual installation, FTP upload or one-click installation by the host vendor; 4. After installation configuration: Modify the administrator username, set a fixed link, install cache plug-in, regularly backup and enable automatic updates.

Sep 03, 2025 am 06:08 AM

How to clean up the WordPress database

The steps to clean up WordPress database include: 1. Delete article revisions, which can be implemented through plug-ins or SQL commands, and limit the number of saved revisions; 2. Clean up spam and unapproved comments, use plug-ins to delete or disable comments in batches; 3. Delete useless data left by deactivated plug-ins, and use special tools or check plug-in uninstall instructions; 4. Optimize and repair database tables, and automatically complete them through phpMyAdmin or plug-in; overall, performing these steps regularly improves performance and reduces problem risks, but be sure to back up the database before operation to avoid accidents.

Sep 02, 2025 am 07:05 AM

How to deploy WordPress changes safely

The core steps to ensure that the online website does not affect the update before going online are: testing environment verification, backing up complete data, phased operations, and checking before going online. 1. Modify the local or test environment, use Local or Docker to build the same environment and test it before going online, use plug-ins such as Duplicator to copy the website and check the front and back-end functions; 2. Back up the database and files in full, and use UpdraftPlus and other plug-ins, FTP to manually download or host-manager snapshots, and test the backup and restore effectiveness; 3. Go online in stages, first update non-core plug-ins and then process themes and functional plug-ins, and finally refresh the cache, observe for a few minutes after each change to confirm that there are no 500 errors or white screens; 4. Optional settings for maintenance pages, use plug-ins to display them

Sep 02, 2025 am 06:38 AM

How to identify slow plugins or themes

To identify plug-ins or themes that slow down WordPress websites, first use performance analysis tools such as GTmetrix, GooglePageSpeedInsights, and QueryMonitor to detect the impact of each component; secondly, check the scripts and style sheets loaded in the browser developer tools to identify unnecessary resources; then troubleshoot by switching the default themes and enabling plug-ins one by one; finally pay attention to the frequency of plug-ins updated and user reviews, and avoid using plug-ins that have not been updated for a long time or are frequently complained about the performance.

Sep 01, 2025 am 07:16 AM

How to remove actions or filters

The method to delete Actions or Filters in Photoshop is: 1. Delete Actions: Open "Window>Actions" → Select Actions → Click the menu in the upper right corner to select "Delete Actions"; 2. Uncheck the check step to temporarily skip a certain step; 3. Delete smart filters: Double-click the layer to enter the filter settings interface → Select the filter and click "Delete". The method to remove Filters in Lightroom is: 1. Click "Reset" at the bottom of the right panel to clear all adjustments; 2. Select the local filter icon and click "Delete"; 3. Shortcut key Shift M clears all local adjustments. The method to delete filters in the mobile app is: 1.LightroomMobile

Aug 31, 2025 am 09:20 AM

How to optimize images for WordPress

Image optimization is crucial to WordPress websites and can improve loading speed, user experience and SEO results. 1. The image size should be appropriate. Before uploading, crop to the actual display size. The main image should be controlled at 1200~1920px, and the thumbnail image should be 300~800px; 2. Select the format according to the image type. JPG is suitable for photos, PNG is suitable for icons and transparent backgrounds, and WebP is a modern preferred format; 3. The compressed images should be moderate. Use lossless or lossy compression tools such as TinyPNG and Squoosh, with the quality control between 60%~80%, and can be automatically optimized with the help of plug-ins; 4. Correctly name the picture file and fill in the ALT label, use descriptive file names and short keyword-related ALT text to improve SEO and

Aug 31, 2025 am 09:00 AM

How to create custom template tags

The steps to create a custom template tag in Django are as follows: 1. Create a templatetags folder in the application directory and add __init__.py and custom Python files such as custom_tags.py; 2. Load the module using {%loadcustom_tags%} at the top of the template; 3. Write filter functions through @register.filter such as to uppercase to_upper; 4. Use @register.simple_tag to write tags with parameters such as multiply to achieve numerical multiplication; 5. For structured tags, use @register.tag combined with template.

Aug 30, 2025 am 08:54 AM

How to register a custom block category

ToregisteracustomblockcategoryinWordPress,usetheblock_categories_allfilterhook.Thisallowsdeveloperstocreateorganizedsectionsforcustomblocksintheblockinserter.1.Hookintoblock_categories_allandreturnanupdatedlistofcategorieswithyourcustomone.2.Defineth

Aug 30, 2025 am 08:14 AM

自定義塊塊分類

How to use the Theme Check plugin

TheThemeCheckpluginhelpsensureWordPressthemesfollowbestpracticesbyidentifyingcommonissues.1.Itchecksfordeprecatedfunctions,missingfiles,andincorrectuseofWordPressstandards.2.Touseit,installandactivatetheplugin,thengotoTools>ThemeChecktoruntests.3.

Aug 29, 2025 am 03:57 AM