PHP MySQL and phpMyAdmin Quiz: Test Your Skills with Our Online Quiz

What is the most popular database platform used with PHP?

What is the basic reason for server-side programming?

Which of the following is NOT a basic PHP MySQL function?

What is the default username for connecting to a MySQL database server?

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

What is the purpose of the variable $db in the provided code snippet?

What function is used to make SQL queries in PHP?

What does the mysqli_query() function return for queries that retrieve information, such as SELECT?

What is the recommended practice when a query fails in PHP?

Which function is used to retrieve a row from a result set as an associative array?

What does the mysqli_fetch_array() function do?

What is the purpose of the ORDER BY clause in SQL?

PHP MySQL and phpMyAdmin

MySQL is the most popular database platform used with PHP.
MySQL is an open-source database, relatively easy to set up, and easy to use with PHP.
Other SQL databases and non-SQL options, such as MongoDB, are also available.

Basic PHP MySQL Functions

Connecting to a database: use the mysqli_connect(server, username, password) function.
Default server is "localhost", default username is "root", and default password is empty.
Selecting a database: use the mysqli_select_db(connection, dbname) function.
Running a query: use the mysqli_query(db_resource, query_string) function.
Queries that return information, such as SELECT, return a resource.
Other queries return TRUE upon success and FALSE on failure.

Database Connection

A MySQL database server can contain many databases, each of which can contain many tables.
The connection variable is a database resource type, used to refer to the connection created.

Retrieving Information from a Query

Loop over the returned $result resource, row by row, using the mysqli_fetch_assoc() function.
mysqli_fetch_assoc() turns a row of the result into key-value pairs, where keys are names of the fields and their values are the corresponding values in the table.
Use mysqli_fetch_array() to access the rows of the result as an array.
Each row in the array equates to the rows that the command line would show you.

Test your knowledge on the basic concepts of using PHP with MySQL and phpMyAdmin for storing and retrieving dynamic information. Understand the relationship between server-side programming and databases in managing client data. Explore the features of MySQL as an open-source database commonly used with PHP.