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How to use get_template_part

get_template_part is a practical function used to reuse code blocks in WordPress theme development. It reduces duplicate code and improves maintainability by loading specified template files. Its basic usage is get_template_part($slug,$name), where $slug is a required parameter to represent the basic template name, and $name is an optional variant name. For example, get_template_part('content') loads content.php, and get_template_part('content','single') preferentially loads content-single.php, if not present, fallback

Jul 29, 2025 am 12:12 AM

How to use the Options API in WordPress

WordPressOptions API is used to store, fetch, update, and delete simple key-value pair data such as theme settings or plug-in configuration. 1. Use add_option() to add the option, which is suitable for initializing the configuration and will not overwrite the existing keys; 2. Use get_option() to obtain the option, which can specify the default value to avoid the problem of null value; 3. Use update_option() to update the option, which is automatically created if the key does not exist; 4. Use delete_option() to delete the option, which is used to clean useless data and will not report an error. These four functions form the core tool for handling small amounts of persistent configurations.

Jul 28, 2025 am 01:17 AM

What are the core WordPress database tables

WordPressusesseveralcoredatabasetablestomanagewebsitedata,eachservingaspecificpurpose.Thewp_optionstablestoressitesettingslikethesitetitle,permalinkstructure,andactiveplugins;wp_postsholdsallcontenttypessuchasposts,pages,andmediaviathepost_typefield;

Jul 28, 2025 am 01:08 AM

How to build a dynamic Gutenberg block

AdynamicGutenbergblockusesserver-siderenderingtodisplayup-to-datecontenteachtimeitloads.Unlikestaticblocks,dynamicblocksexecutePHPcodewhenthepageisloaded,allowingforreal-timedatalikerecentpostsoruser-specificcontent.Keystepsinclude:1)settingupabasicb

Jul 28, 2025 am 12:50 AM

How to search and replace in the database with WP-CLI

WP-CLI's search-replace command can be used to perform batch replacement operations on WordPress databases, especially for migrating sites or updating serialized data. 1. Use the basic command wpsearch-replace'old-string''new-string' to replace the string globally and process the serialized data correctly; 2. Use wpdbexport to back up the database before execution; 3. Use the --dry-run option to run for tests to view the changed content without actually modifying it; 4. Use --skip-columns or --include-columns to limit the replacement range to avoid affecting irrelevant fields;

Jul 28, 2025 am 12:39 AM

How to use the wpdb class for custom queries

To run custom database queries safely and efficiently in WordPress, use the built-in wpdb class. 1. Use the global variable $wpdb and understand its basic properties such as $wpdb->prefix; 2. Use the $wpdb->prepare() method to prevent SQL injection when running SELECT query, and select get_results, get_row or get_var according to the number of results; 3. Use insert(), update() and delete() methods when inserting, updating and deleting data to ensure the correct format; 4. Check last_error and last_query during debugging to handle errors; 5. Pay attention to

Jul 27, 2025 am 12:31 AM

How to store plugin options in WordPress

In WordPress plug-in development, the recommended way to correctly store plug-in options is to use register_setting() combined with get_option() and update_option(). First, register the setting item through register_setting('section','option_name'); second, use update_option('option_name',$value) to save the data when submitting the form; again, use get_option('option_name','default_value') to get the value when loading the page; in addition, it is recommended to merge multiple fields.

Jul 27, 2025 am 12:29 AM

插件選項

How to use pre_get_posts

pre_get_posts is an action hook in WordPress used to modify query parameters before the main query is executed. It is often used to adjust the query logic of the home page, classification page or search page. It allows developers to step in when the query has not been executed, improving efficiency. The correct use of this hook is to ensure that it only affects the foreground and main loop query. The basic structure is to add custom functions through add_action, and use !is_admin() and $query->is_main_query() in the function to make judgments. Common usage scenarios include: 1. Modify the number of articles on the homepage, such as setting 10 articles per page; 2. Excluding articles with specific categories on the homepage, such as categories with IDs 3 and 5; 3. Modify the archive page ranking

Jul 27, 2025 am 12:26 AM

How to speed up a slow WordPress site

Solutions to slow down WordPress sites include: 1. Optimize image size and format, use compression tools, select WebP format, set the correct size and disable unnecessary thumbnails; 2. Use cache plug-ins such as W3TotalCache or WPSuperCache to enable browser cache and cooperate with CDN; 3. Reduce the number of plug-ins, merge functions, and clean the database regularly; 4. Select high-performance hosts and lightweight themes to avoid code confusion and unnecessary resource loading. Through the above steps, you can effectively improve the speed of the website and maintain long-term and stable operation.

Jul 27, 2025 am 12:17 AM

How to insert data using wpdb

The basic structure of inserting data using wpdb->insert() includes: 1. Use global$wpdb to obtain the database object; 2. Splice the prefixed table names; 3. Call the insert() method, pass in the table name, field value array and formatted array. Frequently asked questions and solutions: 1. If the table name is not prefixed, it will fail. You should use $wpdb->prefix splicing; 2. If the data type mismatch causes an exception, you should ensure that the format character is consistent with the field type; 3. If you forget to call $wpdb globally, you should use a global declaration inside the function. In the example, sanitize_text_field() and sanitize_textarea_fiel

Jul 26, 2025 am 03:31 AM

How to add theme support for specific features

In WordPress theme development, it is necessary to configure the specific functions correctly by enabling the add_theme_support() function. 1. Basic functions such as featured images, title tags, and HTML5 support only need to register; 2. Advanced functions such as custom backgrounds and logos need to be passed in parameters and configuration; 3. Custom image sizes can be added to adapt to different thumbnail requirements, but only affect new images; 4. The menu needs to register the location in combination with register_nav_menus() and enable relevant support. Using these methods rationally ensures that functions work properly and improves theme flexibility.

Jul 26, 2025 am 02:37 AM

How to handle plugin activation hooks

Notes on using activation hooks in WordPress plug-in development include: 1. Using register_activation_hook is a standard practice. The processing function should be bound to centralized initialization logic to avoid time-consuming operations; 2. In a multi-site environment, additional network activation needs to be handled, and the wpmu_new_blog hook can be listened to; 3. Cleaning and error handling after activation cannot be ignored. It is recommended to save the activation flag bit, prompt error information and catch exceptions. For example, when creating a database table, use the dbDelta function to cooperate with the global $wpdb object to complete the structure initialization, and at the same time, use get_option and update_option to avoid repeated execution of activation logic.

Jul 26, 2025 am 01:35 AM

How to configure Nginx for WordPress

To correctly configure Nginx to support WordPress, you need to complete the following steps: 1. Create a virtual host configuration file, set the domain name and website root directory, and ensure that the pseudo-static rules are included try_files; 2. Configure the PHP processing module, enable PHP-FPM and correctly set the fastcgi-pass path; 3. Enable the pseudo-static function, rely on the try_files directive to achieve a fixed link friendly format; 4. Configure the SSL certificate to support HTTPS, it is recommended to use Let’sEncrypt free certificate, and add HTTP to HTTPS 301 redirect; 5. Perform performance optimization, including enabling static resource cache, limiting upload size, and enabling Gzip compression, thereby improving loading

Jul 26, 2025 am 12:21 AM

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How to set up a local development environment using Docker

TosetupalocaldevelopmentenvironmentusingDocker,firstidentifyyourapplication’sstacktochooseappropriatebaseimagesandversions.Next,createaDockerfileforeachservice,specifyingthebuildstepswhileusing.dockerignoretoexcludeunnecessaryfiles.Then,usedocker-com

Jul 25, 2025 am 12:38 AM