PHP PDO vs. mysqli: compare and contrast

php editor Strawberry will take you to an in-depth discussion of the comparison and contrast of PDO and mysqli, two commonly used database extensions in PHP. Although they are both tools for PHP to interact with databases, there are some differences in performance, ease of use, and functional features. By comprehensively comparing them, you can better choose the database extension method suitable for your project and improve development efficiency and code quality.

PDO is an object-orienteddatabaseaccess abstraction layer that provides a unified interface for PHP, allowing you to use the same code with different Interact with database (such as Mysql, postgresql, oracle). PDO hides the complexity of underlying database connections and simplifies database operations.

Advantages and Disadvantages

• advantage:
  • Unified interface, supports multiple databases
  • Simplify database operations and reduce development difficulty
  • Provide prepared statements to improve security
  • SupportTransactionProcessing
• shortcoming:
  • Performance may be slightly lower than native extensions
  • Depends on external libraries, which may increase overhead

Demo code

Use PDO to connect mysql Database:

$db = new PDO("mysql:host=localhost;dbname=myDB", "user", "passWord");

mysqli

mysqli is a procedure-oriented extension that is optimized for the MySQL database. mysqli provides a rich set of functions and classes for interacting with MySQL databases and provides low-level access to MySQL-specific functionality.

Advantages and Disadvantages

• advantage:
  • Optimized for MySQL, with higher performance
  • Provide rich functions and classes for easy operation
  • Support MySQL-specific functions
• shortcoming:
  • Only supports MySQL database
  • There are many functions and classes, The cost of learning is high
  • Prepared statements are not supported

Demo code

Use mysqli to connect to the MySQL database:

$mysqli = new mysqli("localhost", "user", "password", "myDB");

Compare

characteristic	PDO	mysqli
Database support	Multiple databases	MySQL only
interface	Object-oriented	Process-oriented
Preprocessing statements	support	not support
Transaction Processing	support	support
performance	Slightly lower	Higher
Learning Cost	medium	Higher

Select Suggestions

Choose PDO or mysqli depends on your projectneeds:

• If you need to interact with multiple databases, or need advanced features such as prepared statements, it is recommended to use PDO.
• If you only use MySQL database and need the highest performance, it is recommended to use mysqli.

in conclusion

PDO and mysqli are both excellent database interactive extensions in php. PDO provides a cross-platform, object-oriented interface, while mysqli is optimized for MySQL and provides high performance. Depending on your project needs, choosing the most appropriate extension can help you improve development efficiency and application performance.

The above is the detailed content of PHP PDO vs. mysqli: compare and contrast. For more information, please follow other related articles on the PHP Chinese website!