PHP MySQLI : MySQL Improved

  1. Key Features
  2. Tutorials on MySQLi
  3. When Not to use MySQLi

MySQLi stands for "MySQL Improved," and it is an extension for the PHP programming language used to interact with MySQL databases.
The mysqli extension provides a more advanced and improved way to connect to MySQL databases compared to its predecessor, the mysql extension.

Key features and benefits of using mysqli

  1. Object-oriented and Procedural Interfaces: MySQLi provides both object-oriented and procedural interfaces, offering flexibility in coding styles.
  2. Prepared Statements: With prepared statements, MySQLi allows for safe parameterized queries, preventing SQL injection attacks and improving query performance.
  3. Multiple Statements: MySQLi enables executing multiple SQL statements within a single query, reducing database round-trips and enhancing efficiency.
  4. Transaction Support: You can use transactions with MySQLi to group multiple SQL queries as a single unit, ensuring data integrity and consistency.
  5. Stored Procedure Support: MySQLi enables you to call and work with stored procedures in your MySQL database.
  6. Enhanced Security: MySQLi provides improved security features compared to the deprecated MySQL extension, making it a safer choice for database interactions.
  7. SSL Support: MySQLi supports encrypted connections using SSL, ensuring secure data transfer between the application and the database server.
  8. Support for Large Result Sets: MySQLi supports fetching large result sets from the database, making it suitable for handling extensive data.
  9. Improved Error Handling: MySQLi offers better error handling and reporting capabilities, making it easier to diagnose and resolve database-related issues.

Here are tutorials handling Query with MYSQLI
Query Description
DELETEDELETE with WHERE Clause
UPDATEUpdate records with parameters
INSERTInsert or Add records with parameters
SELECTGetting records from table with parameters

MySQLI Functions

Functions Description
affected_rowsNumber of rows affected by query
mysqli InstallationChecking MYSQLI installation and support
mysqli_connect()MYSQLI Connection string
mysqli_bind_param()Bindes variables to a prepared statement as parameters
mysqli_fetch_array()Rows of data as Array by using result set
mysqli_query()Apply query to database
mysqli_num_rows()Number of rows in result set of a query
mysqli_num_fields()Number of fields in result set of a query
mysqli_fetch_field_direct()Field meta Data
mysqli_fetch_field()All Field meta Data
mysqli_fetch_lengths()Data Field length
mysqli_info()info about the recently executed query
nd_mysqliEnabling mysqli and nd_mysqli

When not to use MySQLi

While MySQLi is a robust and versatile extension for interacting with MySQL databases in PHP, there are certain scenarios where using MySQLi might not be the best choice. Here are some cases when you might consider alternatives or different approaches:

  1. Non-MySQL Databases: MySQLi is specifically designed for MySQL databases. If you are working with a different database system like PostgreSQL, Oracle, or Microsoft SQL Server, you should consider using the appropriate database extension or a database abstraction layer like PDO (PHP Data Objects) that supports multiple database systems.
  2. PHP Version Compatibility: MySQLi is supported in PHP versions 5.0 and later. However, if you are working on a project that requires compatibility with very old PHP versions (before PHP 5.0), you may need to use the older mysql extension or a different approach.
  3. New Projects and PDO: For new projects, it is worth considering using PDO (PHP Data Objects) instead of MySQLi. PDO is a database abstraction layer that supports multiple database systems, offering a consistent API. PDO allows you to switch between different database systems without changing much of your code, providing greater flexibility and future-proofing your application. ( Note that hardly we change the Database )
  4. Legacy Code and Compatibility: If you are working with an existing codebase that relies heavily on the deprecated mysql extension, migrating directly to MySQLi might not be the best approach. In such cases, you could consider gradually refactoring your code to use MySQLi or PDO over time.
  5. Personal Preference and Project Requirements: Sometimes, the choice between MySQLi and PDO may come down to personal preference, team familiarity, or specific project requirements. Both extensions have their strengths and are capable of handling most database tasks effectively, so it's essential to weigh the pros and cons based on your project's unique needs.


PHP MySQL PDO Functions SQLite PHP Code generator for PDO & mysqli
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