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How can I connect two database in PHP and MySQLi?

Connecting Multiple Databases with PHP MySQLi:

  1. Step-1) Open the Mysql Connection.
  2. Step-2) Select and Retrieve Records from the First Database.
  3. Step-3) Select and Retrieve Records from the Second Database.
  4. Step-4) Closing the Connection.
  5. Step-1) Connect First Database with PDO.
  6. Step-2) Connect the Second Database.

How do I connect my MySQL database to my website?

For this you need to follow the following steps:

  1. Step 1: Filter your HTML form requirements for your contact us web page.
  2. Step 2: Create a database and a table in MySQL.
  3. Step 3: Create HTML form for connecting to database.
  4. Step 4: Create a PHP page to save data from HTML form to your MySQL database.
  5. Step 5: All done!

Is MySQLi deprecated?

The oldest one uses the MySQL extension, which was deprecated as of PHP 5.5 and fully removed in PHP 7. The mysql() function no longer works in PHP 7. It has been replaced with mysqli().

What is mysqli connect in PHP?

PHP mysqli connect () Function Definition and Usage. The connect () / mysqli_connect () function opens a new connection to the MySQL server. Syntax. Parameter Values. Technical Details.

Should I use MySQL or mysqli for web applications?

You only have to change the connection string and a few queries. With MySQLi, you will need to rewrite the entire code – queries included. Both are object-oriented, but MySQLi also offers a procedural API. Both support Prepared Statements. Prepared Statements protect from SQL injection, and are very important for web application security.

Should I use mysqli or PDO?

However, this extension was deprecated in 2012. Should I Use MySQLi or PDO? If you need a short answer, it would be “Whatever you like”. Both MySQLi and PDO have their advantages: