PHP and MySQL Quiz

What does PHP stand for?

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Which of the following is the correct syntax to start a PHP script?

How do you declare a variable in PHP?

• $variable_name = value;

• $variable_name = initial_value;

• $variable_name = initial_value;

• $variable_name = null;

Which function is used to connect to a MySQL database in PHP?

• mysqli_connect()

• mysqli_connect_error()

• pdo_connect()

• mysql_connect()

What is the correct way to access the first element of an array in PHP?

• $array[first]

• $array[-1]

• $array[1]

• $array[0]

Which of the following is the correct syntax to insert data into a MySQL table using PHP?

• $sql = 'INSERT INTO table_name VALUES (value1, value2, value3)'

• $sql = 'INSERT INTO table_name (column1, column2, column3) VALUES (value1, value2)'

• $sql = 'INSERT INTO table_name (column1, column2, column3) VALUES (value1, value2, value3, value4)'

• $sql = 'INSERT INTO table_name (column1, column2, column3) VALUES (value1, value2, value3)';

What is the output of the following code? $number = 10; $number += 5; echo $number;

• 15

• 20

• 10

• 5

Which of the following is the correct way to retrieve data from a MySQL database using PHP?

• Use the mysqli functions in PHP to connect to the MySQL database and execute SQL queries.

• Use the mysql functions in PHP to connect to the MySQL database and execute SQL queries.

• Use the PDO functions in PHP to connect to the MySQL database and execute SQL queries.

• Use the pgsql functions in PHP to connect to the MySQL database and execute SQL queries.

What is the purpose of the isset() function in PHP?

• The isset() function is used to determine if a variable is set and is not NULL.

• The isset() function is used to convert a variable to a string.

• The isset() function is used to assign a value to a variable.

• The isset() function is used to check if a variable is empty.

Which of the following is the correct syntax to delete a record from a MySQL table using PHP?

• $delete_query = 'DELETE FROM table_name WHERE condition'; mysqli_query($connection, $delete_query);

• $delete_query = 'DELETE * FROM table_name WHERE condition'; mysqli_query($connection, $delete_query);

• $delete_query = 'REMOVE FROM table_name WHERE condition'; mysqli_query($connection, $delete_query);

• $delete_query = "DELETE FROM table_name WHERE condition"; mysqli_query($connection, $delete_query);