Php workshop L04 database

Web Basics Programming With PHP

FilesExample

INPUT :

Price and product changes

OUTPUT :

Catalogue

Catalogue

File

Record Format :

(Product_no, Description, Price)

$file=fopen("welcome.txt","r");

fclose($file)

feof($file)

fgets($file) fgetc($file)

By: Mohammad Al-Shalabi & Mohammad Opada Al-Bosh

What is Database?

A database is an organized collection of data. The data are typically organized to model relevant aspects of reality in a way that supports processes requiring this information


http://en.wikipedia.org/wiki/Data_(computing)

Database Vs FilesFiles problems

• Have to write procedures to manage the accessibility of common files.

• Errors occurs through using the files.

• Editing common files structure require editing all the programs that deal with this file.


• What is MySQL?

MySQL is a database system used on the web

MySQL is a database system that runs on a server

MySQL is ideal for both small and large applications

MySQL is very fast, reliable, and easy to use

MySQLIntro


• What is MySQL?

MySQL supports standard SQL

MySQL compiles on a number of platforms

MySQL is free to download and use

MySQL is developed, distributed, and supported by Oracle Corporation

MySQLIntro


• Connect to DB:

mysql_connect('localhost',‘db_user',‘db_pass')

• Verifying and Select DB:

mysql_select_db(‘db_name')

MySQLConfiguration


• Why ?

To insert the content of one PHP file into another PHP file before the server executes it.

• Syntax:

Include & Require

include 'filename';

or

require 'filename';


• What is Query ?

A query is a question or a request.

We can query a database for specific information and have a record set returned.

• Ex:

SELECT LastName FROM Employees

MySQLQuery


• How can I write Query in php ?

$result = mysql_query("SELECT * FROM Persons");

• How can I get the results ?

mysql_fetch_array($result);

mysql_fetch_assoc($result);

MySQLQuery with php


MySQLCreate new DB

// Create database$sql="CREATE DATABASE my_db";if (mysql_query($sql)) {

echo "Database my_db created successfully";} else {

echo "Error creating database: " . mysqli_error($con);}

OR

MySQLCreate new Table

// Create table$sql="CREATE TABLE Persons(FirstName CHAR(30),LastNameCHAR(30),Age INT)";if (mysql_query($sql)) {

echo "Table persons created successfully";} else {

echo "Error creating table: " . mysqli_error($con);}

OR

MySQLCreate new Table


MySQLInsert Date to a Table


MySQLInsert Date to a Table


mysql_query("INSERT INTO Persons (FirstName, LastName, Age)VALUES ('Peter', 'Griffin',35)");

mysql_query("INSERT INTO Persons (FirstName, LastName, Age)VALUES ('Glenn', 'Quagmire',33)");

OR

MySQLSelect Data from Table


$result = mysql_query("SELECT * FROM Persons");

while($row = mysql_fetch_array($result)) {echo $row['FirstName'] . " " . $row['LastName'];echo "<br>";

}

MySQLWhere clause


$result = mysql_query("SELECT * FROM PersonsWHERE FirstName='Peter'");

while($row = mysql_fetch_array($result)) {echo $row['FirstName'] . " " . $row['LastName'];echo "<br>";

}

MySQLUpdate Data In a Database


mysql_query("UPDATE Persons SET Age=36WHERE FirstName='Peter' AND LastName='Griffin'");

MySQLDelete Data In a Database


mysql_query(“DELETE FROM PersonsWHERE FirstName='Peter' AND LastName='Griffin'");

THANK YOU!

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Php workshop L04 database

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