Pankaj

 https://payments.google.com/gp/w/home/activity https://play.google.com/console/u/0/developers/9071100826832999736/app-transfer/create

  -keep class **.R$raw { * ; } -keepclassmembers class **.R$raw { * ; } -keep raw/ring.mp3 -keepclassmembers class **.R$* { public static final int raw_* ; } -keepdirectories res/raw/ring.mp3 -keepclassmembers class ** { public static final int raw_* ; }

 which is better pdo or mysqli The choice between PDO (PHP Data Objects) and MySQLi (MySQL Improved) largely depends on your specific needs and preferences for interacting with a database in PHP. Both are widely used for database interactions, but each has its strengths. Here’s a comparison of the two: 1. Database Support: PDO: Supports multiple database types (MySQL, PostgreSQL, SQLite, Oracle, etc.), making it more versatile if you plan to switch databases in the future. MySQLi: Specifically designed for MySQL databases. If you are only using MySQL and want to take full advantage of MySQL-specific features, MySQLi might be a better choice. 2. API Style: PDO: Object-oriented and supports both named and positional placeholders in prepared statements, which can help prevent SQL injection. MySQLi: Offers both an object-oriented and a procedural interface. This gives you flexibility based on your coding preferences. 3. Prepared Statements: PDO: Fully supports prepared statement...

 API with a focus on security best practices : Key Security Practices Included: Input Validation and Sanitization : All inputs are validated and sanitized to prevent SQL injection and other attacks. Prepared Statements : All database queries use prepared statements to avoid SQL injection. Password Hashing : Passwords are hashed using password_hash() and verified using password_verify() . Token-Based Authentication : JSON Web Tokens (JWTs) are used for secure API authentication. Error Hiding : Error details are logged but not exposed to users in production. Strict Content-Type Header : Ensures only JSON payloads are processed. Rate Limiting and Throttling : Optional mechanisms to prevent abuse. Validation for IDs : Integer inputs (like user_id or exam_id ) are explicitly validated.