Tools, FAQ, Tutorials:
Selecting an Existing Database in PHP
How To Select an Exiting Database in PHP?
✍: FYIcenter.com
The first thing after you have created a connection object to the MySQL server is to select the database where your tables are locate, by using the mysql_select_db() function. If your MySQL server is offered by your Web hosting company, they will assign a database to you and provide you the database name. You should use this name to select your database as your current database. The following script shows you how to select a database called "fyi". It also shows you how to put all the database connection statements in a single include file, and re-use it in all of your PHP pages.
Create the include file, connect.php, with the following statements:
<?php $server = "localhost"; $username = ""; $password = ""; $database = "fyi"; $con = mysql_connect($server, $username, $password); mysql_select_db($database); ?>
To test this database connection and selection include file, try the following script:
<?php include "mysql_connection.php"; $sql = 'SHOW TABLES'; if ($rs = mysql_query($sql, $con)) { print(mysql_num_rows($rs) . " tables in the database.\n"); } else { print("SHOW TABLES failed.\n"); } mysql_close($con); ?>
You will get something like this:
0 tables in the database.
⇒ Running a SQL Statement in PHP
2016-10-20, 2185🔥, 0💬
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