php mysqli函数
What is .php mysqli functions?
PHP mysqli stands for "MySQL Improved". It is an extension of PHP programming language which enables the interaction of a PHP script with a MySQL database. mysqli functions are an improved version of the older MySQL functions which are now deprecated since MySQL 5.5. They provide a more secure and efficient way to interact with databases in comparison to the older mysql functions.
advantages of using mysqli functions
The mysqli extension offers several advantages over the older mysql extension. Firstly, it provides support for prepared statements and binding parameters which can make queries more secure and provide better performance. Secondly, it supports multiple statements, transactions and stored procedures. Lastly, it has improved error handling through the mysqli_error() function which returns detailed error messages.
Connecting to a database with mysqli functions
To connect to a database using mysqli, you will need to provide the following information:
- Hostname
- Username
- Password
- Database name
The mysqli_connect() function can be used for this purpose.
Executing queries with mysqli functions
Once you have established the database connection, you can execute SQL queries using mysqli_query() function. This function takes two parameters: the connection object and the SQL query. The results of the query are stored in a result object which can be processed using mysqli_fetch_*() function. The *_ can be replaced with various options such as assoc, array, object etc. based on your preference.
Conclusion
In conclusion, mysqli functions offer several advantages over the older mysql extension. They provide better security, performance and error handling capabilities. They also offer support for prepared statements, transactions and stored procedures. If you are planning to work with MySQL databases in PHP, mysqli is the recommended extension to use.
