Advanced PHP: Using PHP with MySQL

C. Daniel ChaseThe University of Tennessee at Chattanooga

Overview

● Introduction to PHPMyAdmin to Manage MySQL

● MySQL Management● Introduction to Database Design● Creation of Databases● Using PHP with MySQL● Useful PHP Functions

PHPMyAdmin

● Web-based interface for managing MySQL● Download from phpmyadmin.net● Can install in user web space—ours is in

system-wide location: http://localhost/phpmyadmin/

● Setup by editing config.inc.php– For auth_type config

● Set controluser & controlpass– Read-only access to mysql/user– Read-only access to mysql/db

● Set user & pass

PHPMyAdmin Configuration

● Setup by editing config.inc.php– For auth_type config

● Set controluser & controlpass– Read-only access to mysql/user– Read-only access to mysql/db

● Set user & pass– For auth_type http

● Set auth_type to http● Set controluser & controlpass as above● Set user & pass to “”● Do Not Set Apache to require authentication!

● Trick: With NEW MySQL Install, Use PHPMyAdmin to create & set passwords in MySQL BEFORE doing above

Managing MySQL with PHPMyAdmin

● Adding Users● Setting passwords● Note: These are Exclusive to MySQL!● Granting Rights

– Database level access control– Table level control– Field level control– Operation control– Remote location limits

Database Design

● Database Normalization● First Normal form

– Each column contains atomic values– Each column has unique name– Table has unique Primary Key– No two rows identical– No repeating groups of data

● Second Normal Form– Applies only to multi-column primary keys– Move data only dependent on part of primary key

Database Design

● Third Normal Form– Remove transitive dependencies—column not

directly reliant on primary key, but on another that is

● Relationships– One-to-Many– One-to-One– Many-to-Many

Creation of Databases

● New Database require MySQL root privileges● If using http authentication, admin can create

database & users authorized to access, then allow access for user to create actual tables, etc.

● Grant appropriate Rights to User● Suggest admin creating

– Database level admin user with full rights– Database level read-only user with SELECT only

rights

Using PHP with MySQL

● Create connection to MySQL– $conn = mysql_connect(“localhost”, “username”, “password”) or die (“Could not connct to database”);

– $conn = mysql_pconnect(“localhost”, “username”, “password”) or die (“Could not connct to database”);

● Select database– $db = mysq_select(“database”) or die(“Could not select database”);

● Send Query– $result = mysql_query(“SELECT * FROM table”) or die(mysql_error());