php
PHP programming language and syntax
Pretty-print JSON in shell scripts using jq, Python's json.tool, php or json_pp. One-line examples for bash, curl, NDJSON and safe in-place file updates.
Prevent SQL injection in PHP: use prepared statements (PDO/MySQLi), validate and whitelist input, use least-privilege DB accounts, hash passwords, and test.
Learn how to access the index or key in a PHP foreach loop using `foreach ($array as $key => $value)`. Perfect for numeric and associative arrays without manual counters. Examples, pitfalls, and tips included.
Learn how to add elements to empty arrays in PHP using bracket notation and array_push(). Compare performance and see practical examples for dynamic array manipulation.
Compare json_encode and serialize for PHP array storage. Learn about performance benchmarks, cross-language compatibility, security considerations, and best practices for flat file storage.
Fix Laravel 12 with Nova 5 routes not loading after update. Restore access locally in Docker: move provider to config/app.php, clear caches, run nova:install, tweak APP_URL. Step-by-step guide for missing nova routes.
Learn how to efficiently access parent table values in Laravel child records without data duplication using belongsTo and hasMany relationships.
Resolve 'Missing CORS header Access-Control-Allow-Origin' error in VM Essentials plugin's status-update.js. Server-side PHP fixes for Joomla, handle preflights, add headers, and test XMLHttpRequest requests effectively.
Step-by-step guide to install MODX 3.1.2-pl in advanced mode with core outside public_html. Fix Error 503 'Site temporarily unavailable; missing dependencies' by pre-configuring paths, permissions, and setup.
Fix 'Call to undefined method Cloudinary::upload()' in Laravel. Step-by-step guide to configure Cloudinary Laravel package, import correct facade, set up config, and upload files using facade or Storage disk.
Master WordPress security: sanitize form inputs with sanitize_text_field() and sanitize_email(), validate with is_email(), store securely via $wpdb->insert() in custom admin plugins to prevent SQL injection and XSS attacks.
Restore 'Your city?' popup for IP city detection in Bitrix ASPRO Premier 1.8.0. Fix after init.php deletion or template update: recreate init.php, configure Sypex Geo handler, check templates, clear caches.
Stop QZ Tray security popups: initialize certificate and signature once, keep the WebSocket open, and use server-side signing to avoid prompts for QZ Tray.
Why scraping Google's sign-in fails and how to verify Gmail in PHP: syntax, MX, SMTP RCPT probes and email confirmation. Don't rely on Google sign-in scraping.
After upgrading to PHP 8.3, short open tags (<? ?>) are no longer parsed and show up as HTML comments. Replace them with <?php ?> to fix include execution.
Learn how to integrate Bulk SMS API (e.g., bulkmsg.in) with PHP for instant OTP delivery. Complete code example, error handling, retries, and best practices for user registration and login using cURL and secure OTP storage.
Resolve Oxwall form validation failing on PHP 8.3 when pasting text. 'Please fill the form properly' error due to invisible Unicode characters. Robust server-side fixes, code examples for RequiredValidator, trim/mb_strlen issues, and client-side paste handlers.
Learn how to assign user properties to Bitrix infoblock sections at specific nesting levels. Restrict section properties by hierarchy depth using DEPTH_LEVEL, UF_* fields, and CIBlockSectionPropertyLink for precise control.