PHP – Database connection with mysql Harit Kothari [email_address]

Agenda Installation service, port, Running through WAMP Database creation Table creation mysqldump and mysqlimport utility phpmyadmin utility

Installation

service, port, Running through WAMP

Database creation

Table creation

mysqldump and mysqlimport utility

phpmyadmin utility

Installation Download mysql database installation pack Install it by following manual steps Start mysql service by using appropriate menu

Download mysql database installation pack

Install it by following manual steps

Start mysql service by using appropriate menu

service, port, Running through WAMP mysql runs as a OS service This service provides access to database To access, we require 2 parameters: Service host name Port PHP supports many RDBMS mysql is most suitable and famous with PHP

mysql runs as a OS service

This service provides access to database

To access, we require 2 parameters:

Service host name

Port

PHP supports many RDBMS

mysql is most suitable and famous with PHP

Database & Table creation Either use phpmyadmin to create / alter OR Go to mysql prompt and execute as under: shell>create database db_name shell>create table table_name (colname datatype [size] [, ....] constraints...)

Either use phpmyadmin to create / alter OR

Go to mysql prompt and execute as under:

shell>create database db_name

shell>create table table_name (colname datatype [size] [, ....] constraints...)

Data source names / DSN Syntax: dbsyntax://username:password@protocol+hostspec/database Where: dbsyntax represents RDBMS name Username & password of database user for authentication Protocol is optional – e.g. TCP Hostspec is hostname on which datbase service is running Database is actual database name under dbsyntax

Syntax: dbsyntax://username:password@protocol+hostspec/database

Where:

dbsyntax represents RDBMS name

Username & password of database user for authentication

Protocol is optional – e.g. TCP

Hostspec is hostname on which datbase service is running

Database is actual database name under dbsyntax

DSN Examples mysql:///webdb mysql://localhost/webdb mysql://bondview@localhost/webdb mysql://bondview@tcp+localhost/webdb mysql://bondview:007@localhost/webdb

mysql:///webdb

mysql://localhost/webdb

mysql://bondview@localhost/webdb

mysql://bondview@tcp+localhost/webdb

mysql://bondview:007@localhost/webdb

Syntax DataBase Mysql MySQL Pgsql PostgreSQL Ibase InterBase Msql Mini SQL Mssql Microsoft SQL Server oci8 Oracle 7/8/8i Odbc ODBC Sybase SyBase Ifx Informix Fbsql FrontBase

Syntax DataBase

Mysql MySQL

Pgsql PostgreSQL

Ibase InterBase

Msql Mini SQL

Mssql Microsoft SQL Server

oci8 Oracle 7/8/8i

Odbc ODBC

Sybase SyBase

Ifx Informix

Fbsql FrontBase

Database connection $db = DB::connect(DSN [, options ]); DB::isError($db) This will return if any error occurred while connecting to DataBase with DSN Options are: persistent - Connection persists between accesses optimize - What to optimize for debug - Display debugging information

$db = DB::connect(DSN [, options ]);

DB::isError($db) This will return if any error occurred while connecting to DataBase with DSN

Options are:

persistent - Connection persists between accesses

optimize - What to optimize for

debug - Display debugging information

Mysqldump – Dumping DataBase A utility to dump database for backup or offline modification A CLI utility that can be executed from SQL prompt to take regular backup of database / table as per requirements

A utility to dump database for backup or offline modification

A CLI utility that can be executed from SQL prompt to take regular backup of database / table as per requirements

Ways to dump sql DB shell> mysqldump [options] db_name [tables] shell> mysqldump [options] --databases db_name1 [db_name2 db_name3...] shell> mysqldump [options] --all-databases

Ways to dump sql DB

shell> mysqldump [options] db_name [tables]

shell> mysqldump [options] --databases db_name1 [db_name2 db_name3...]

shell> mysqldump [options] --all-databases

Play with PHP Connect to database : mysql_connect("host_name", "db_username", "db_password"); Select Database : mysql_select_db("db_name");

Connect to database : mysql_connect("host_name", "db_username", "db_password");

Select Database : mysql_select_db("db_name");

Mysqlimport – Import data Import database, by importing one oe more text files Syntax: shell> mysqlimport options db_name input_file Useful especially while importing data from CSV files that contains data

Import database, by importing one oe more text files

Syntax: shell> mysqlimport options db_name input_file

Useful especially while importing data from CSV files that contains data

phpmyadmin Manage mysql database – an administration tool Tool itself written in PHP to manage DataBase effectively and easily Supports operations like create, modify, dump and delete database, table, views etc Very easy to use, GUI

Manage mysql database – an administration tool

Tool itself written in PHP to manage DataBase effectively and easily

Supports operations like create, modify, dump and delete database, table, views etc

Very easy to use, GUI

Summary

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