How to write clean efficient codes

Use proper indentation and spacing to improve readability and maintainability of the code.

Follow a consistent coding style, such as PSR standards, to make it easier for others to understand and contribute to your code.

Use descriptive variable names that accurately convey their purpose and avoid abbreviations or overly short names.

Use comments sparingly but effectively to provide context and explanations for complex or non-obvious code sections.

Use built-in functions and libraries whenever possible, as they have been optimized and tested for performance and security.

Validate all input from users or external sources to prevent SQL injection attacks or other security vulnerabilities.

Keep your functions small and focused on a single task to promote reusability and modularity in your code.