Create a Voting Plugin for WordPress

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.

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

To securely call external APIs, you need to start from three aspects: access control, data protection and response verification. ① Use APIKey, OAuthToken or JWT and store the key in environment variables or key management services, and rotate regularly; avoid the front-end exposing the key, select OAuth2.0 and adopt the appropriate authorization mode. ② Verify the structure and content of the data returned by the interface, confirm the Content-Type and field types, check the status code, filter the XSS content, and set a reasonable timeout time. ③ Use token bucket or leak bucket algorithm to achieve current limiting, record user API usage, and reduce duplicate requests in combination with cache to prevent triggering the other party from limiting the current or blocking the IP.

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

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.

There are three ways to exclude specific categories in WordPress: use query_posts(), use the pre_get_posts hook, or use the plug-in. First, use query_posts() to directly modify the main loop query in the template file, such as query_posts(array('category__not_in'=>array(3,5))), which is suitable for temporary adjustment but may affect paging; second, it is safer to add functions in functions.php through the pre_get_posts hook. For example, excluding the specified classification ID when judging the home page main loop, it will not affect other page logic; finally, WPCate can be used

The key to creating a custom page template is to understand the platform mechanism and follow the specifications. 1. First, clarify the platform type and template structure. For example, WordPress defines templates through PHP files with specific annotations, Hugo places the templates in the layouts directory, and React introduces layouts in a componentized manner. 2. Organize files according to naming and storing rules, such as putting WordPress templates on the theme root directory, Hugo uses baseof.html as the base template, and Jekyll references the template through the layout field in the \_layouts folder to avoid path or configuration errors. 3. Use template inheritance to improve reusability, define the basic template and cover some content in the specific page, reduce duplicate code and maintain

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