Q
What is the primary purpose of database connection pooling in PHP applications?

Answer & Solution

Answer: Option A
Solution:
Database connection pooling in PHP applications is primarily used to improve scalability and performance. It allows reusing and sharing database connections among multiple clients, reducing the overhead of establishing new connections and improving overall application responsiveness.
Related Questions on Average

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 extension offers a consistent interface for accessing different database engines, including MySQL, PostgreSQL, and SQLite?

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

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::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

What is the purpose of the PDO::lastInsertId() method in PDO extension?

A). Retrieving the ID generated by the last INSERT statement

B). Executing an SQL query

C). Fetching data from the database

D). Closing the database connection

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 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 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

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