Which PHP function is used to establish a connection to a MySQL database server using MySQLi extension?
A). mysqli_connect()
B). mysqli_query()
C). mysqli_fetch_assoc()
D). mysqli_close()
Which of the following statements is true regarding parameterized queries in MySQLi and PDO?
A). They prevent SQL injection attacks
B). They improve database performance
C). They can only be used with SELECT queries
D). They require additional server resources
Which PHP extension provides better support for transaction management and error handling: MySQLi or PDO?
A). MySQLi
B). PDO
C). Both provide similar support
D). Neither supports transaction management
What is the primary advantage of using PDO over MySQLi for database access in PHP?
A). Portability across different databases
B). Better performance
C). Easier syntax
D). More features
Which of the following statements is true regarding database connections in PHP applications?
A). Database connections should be properly closed after use
B). Database connections are automatically closed by PHP
C). Keeping database connections open improves performance
D). Multiple simultaneous database connections are recommended
What is the purpose of the PDO::query() method in PDO extension?
A). Establishing a connection to a database
B). Executing an SQL statement
C). Fetching data from the database
D). Closing the database connection
What is the purpose of the PDO::setAttribute() method in PDO extension?
A). Setting attributes for the PDO connection
B). Executing SQL queries
C). Fetching data from the database
D). Closing the database connection
Which of the following is NOT a step in connecting to a MySQL database using PDO extension?
A). Create a PDO object
B). Set database credentials
C). Execute an SQL query
D). Handle connection errors
Which PHP extension provides an improved interface for interacting with MySQL databases?
A). MySQL
B). PDO
C). SQLI
D). MySQLi
What is the primary purpose of database connection pooling in PHP applications?
A). Improving scalability and performance
B). Enhancing database security
C). Simplifying database configuration
D). Reducing server resource usage