{"id":135,"date":"2026-05-14T16:19:04","date_gmt":"2026-05-14T13:19:04","guid":{"rendered":"http:\/\/wordpress.ar4bnet.com\/?p=135"},"modified":"2026-05-14T16:19:04","modified_gmt":"2026-05-14T13:19:04","slug":"custom-development-tutorial-1-advanced-php-js","status":"publish","type":"post","link":"https:\/\/wordpress.ar4bnet.com\/?p=135","title":{"rendered":"Custom Development Tutorial 1: Advanced PHP &#038; JS"},"content":{"rendered":"\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/images.unsplash.com\/photo-1498050108023-c5249f4df085?auto=format&#038;fit=crop&#038;w=1200&#038;q=80&#038;sig=1\" alt=\"Coding Image\"\/><\/figure>\n\n\n<p class=\"wp-block-paragraph\">Welcome to tutorial #1. Today we are diving deep into custom WordPress development techniques that will help you build faster, more secure, and highly maintainable solutions for your clients.<\/p>\n\n\n<h2 class=\"wp-block-heading\">Secure Database Queries with $wpdb<\/h2>\n\n\n<p class=\"wp-block-paragraph\">Always use the global `$wpdb` object for custom queries. To prevent SQL injection, never pass raw user input into a query. Always use the `prepare` method to safely insert variables.<\/p>\n\n\n<pre class=\"wp-block-code\"><code>global $wpdb;\n$user_id = 5;\n$results = $wpdb-&gt;get_results( $wpdb-&gt;prepare(\n    \"SELECT * FROM {$wpdb-&gt;prefix}custom_table WHERE user_id = %d\",\n    $user_id\n) );<\/code><\/pre>\n\n<h2 class=\"wp-block-heading\">Best Practices for Custom Code<\/h2>\n\n\n<p class=\"wp-block-paragraph\">When writing custom code for WordPress, always use the appropriate hooks instead of modifying core files. Use a site-specific functionality plugin instead of adding code to your theme&#8217;s `functions.php` file, so that your customizations survive theme updates. Always comment your code and use descriptive function names to make it maintainable by other developers.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Debugging WordPress Code Effectively<\/h2>\n\n\n<p class=\"wp-block-paragraph\">Do not develop in the dark. Enable WordPress debug mode by setting `WP_DEBUG` to true in your `wp-config.php` file during development. This will display PHP errors and notices directly on the screen or in a log file, helping you catch bugs early. Never leave debug mode enabled on a live production site, as it can expose sensitive information.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Security Considerations in Custom Dev<\/h2>\n\n\n<p class=\"wp-block-paragraph\">Always sanitize data on input and escape data on output. Use WordPress functions like `sanitize_text_field` before saving data to the database, and `esc_html` or `esc_attr` when echoing data in HTML. This protects your site from Cross-Site Scripting (XSS) and SQL injection attacks, ensuring your custom solutions are secure.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Welcome to tutorial #1. Today we are diving deep into custom WordPress development techniques that will help you build faster, more secure, and highly maintainable solutions for your clients. Secure Database Queries with $wpdb Always use the global `$wpdb` object for custom queries. To prevent SQL injection, never pass raw user input into a query. [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[10],"tags":[],"class_list":["post-135","post","type-post","status-publish","format-standard","hentry","category-custom-development"],"_links":{"self":[{"href":"https:\/\/wordpress.ar4bnet.com\/index.php?rest_route=\/wp\/v2\/posts\/135","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/wordpress.ar4bnet.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/wordpress.ar4bnet.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/wordpress.ar4bnet.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/wordpress.ar4bnet.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=135"}],"version-history":[{"count":0,"href":"https:\/\/wordpress.ar4bnet.com\/index.php?rest_route=\/wp\/v2\/posts\/135\/revisions"}],"wp:attachment":[{"href":"https:\/\/wordpress.ar4bnet.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=135"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/wordpress.ar4bnet.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=135"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/wordpress.ar4bnet.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=135"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}