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
Which PHP extension provides an improved interface for interacting with MySQL databases?
A). MySQL
B). PDO
C). SQLI
D). MySQLi
What is the primary advantage of using prepared statements in MySQLi and PDO?
A). Improved security and protection against SQL injection
B). Faster execution of SQL queries
C). Simpler syntax for SQL statements
D). Compatibility with older PHP versions
What is the primary function of the mysqli_connect() function in PHP?
A). Establishing a connection to a MySQL database
B). Executing SQL queries
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 is specific to MySQL databases and offers both procedural and object-oriented approaches for database operations?
A). PDO
B). MySQL
C). SQLI
D). MySQLi
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 is NOT a valid database driver supported by PDO extension?
A). MySQL
B). PostgreSQL
C). MongoDB
D). SQLite
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