It would mean the database you are trying to select in your PHP script couldn't be found, you will need to check to see if you are using the correct details.
WAMP is an abbreviation of "Windows, Apache, MySQL, and PHP", so it uses MySQL database server.
PHP is a programming language, but MySQL is a database management system. They are two entirely different objects, and as a result, they are utilised for two quite different purposes. To learn more about data science please visit- Learnbay.co
WAMP stands for Windows Apache Mysql PHP. Mysql is the default database in WAMP
Ultimately PHP is a programming language and MySQL is a database language. Using PHP with MySQL is a nice combination with built-in support and the simplicity of it all. However, there aren't a lot of disadvantages of using PHP with a database, it just allows for better data organization and whatnot. There are definitely advantages and disadvantages to using a database other than MySQL (such as MongoDB or PostgreSQL).
Please refer link. The presentation gives complete understanding of how to deal with database (Mysql) with php.
You can do that using the mysql_connect() function. For example: <?php $host='localhost'; //Your Host Name Here $username='root'; //MySQL Username $pass='';//MySQL Password $dbname='codenair'; //your Database Name //Connecting Database mysql_connect($host,$username,$pass)or die('Failed to Connect'); //Selecting Database mysql_select_db($dbname)or die('Database Not Found'); echo 'Connected'; ?>
The following are the fundamental procedures for creating a MySQL database with PHP: As demonstrated in this article, connect to the MySQL server from your PHP script. If the connection is successful, construct a database using SQL and save it in a string variable. Carry out the query. To learn more about data science please visit- Learnbay.co
The main causes of errors in PHP can be the problems occurring from the MYSQL database (if there) or errors from Apache handler. These errors can be prevented by hosting the MYSQL database on a trusted and good server.
By sending messages to the MySQL server, you can communicate with the database. To submit SQL queries to the database, you use PHP functions. You don't need to know how to communicate with MySQL because PHP takes care of that. You only need to be familiar with SQL queries and PHP functions. To learn more about data science please visit- Learnbay.co
To delete data from your MySQL database you need to use the mysql_query() function. Please see the example below: <?php mysql_query("DELETE FROM table_name WHERE field_name = 44"); ?>
Mysql is an Database where Data from HTML forms will be inserted to it by some scripts like ASP 3 (classic), ASP.NET, PHP, ColdFusion and... What you need is a form (By HTML), an Database and table in Mysql and PHP to insert data from your form to the table. mysql insert command is: INSERT INTO table_name_here (column1, column2, ..) VALUES (value_of_column_1, value_of_column_2, ...)
Database = Where you save your data (ex: if a user fill your registration form, entered data should be saved somewhere, that's database) Usually in PHP we use MySQL Database.