PHP MySQL

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PHP MySQLThe tutorials…

• MySql is a powerful database. • It's very good and free of charge. • Many developers in the world selected mysql

and php for developing their website.

Top Ten Reasons to Use MySQL

• Scalability and Flexibility• High Performance• High Availability• Robust Transactional Support• Web and Data Warehouse Strengths• Strong Data Protection• Comprehensive Application Development• Management Ease• Open Source • Freedom and 24 x 7 Support• Lowest Total Cost of Ownership

Create database, table and managing MySQL database using phpMyAdmin

• phpMyAdmin is a tool for managing MySQL database and free of charge, it's a web base tool.

• If you install Wamp, Xammp or EasyPHP, phpMyAdmin is included in the package.

• If you manually installed Apache, PHP and MySQL, you can download phpMyAdmin at their officail site.

• phpMyAdmin

• Create database using phpMyAdmin– To create new database use this form, type

database name then click "Create" button. In this example I create database name "test_create_DB".

• Create table– After created database. this form'll be display.

Enter the name of table and number of field. In this example, I create table name "web_members" for store my web members and it have 4 fields (id, name, lastname, email)

• Result after created table on database

• Create table by runing SQL query– ou can create table by run SQL query for example,

put MySql code in the form and click "Go“or browse from text file (read export database for creating text file (.sql))

• MySQL codeCREATE TABLE `web_members` (

ìd` int(4) NOT NULL auto_increment,`name` varchar(65) NOT NULL default '',`lastname` varchar(65) NOT NULL default '',èmail` varchar(65) NOT NULL default '',PRIMARY KEY (ìd`)) TYPE=MyISAM AUTO_INCREMENT=1 ;

• Export database

• In tab Export. You can export your database in many format like- SQL (text file .sql)- Latex- Microsoft Exel 2000- Microsoft Word 2000 - CVS for MS Exel- CVS - XML

• Steps– Select table you want to export or select all table.– Select file format– Select save as file(if you want to save as a file if

not select it'll show you only Sql query)– Select compression • None• zipped (.zip) • gzipped (.gzip)

CONNECT TO MYSQL DATABASE

Syntax

mysql_connect("host", "username", "password")or die("cannot connect to server");

• Overview– host="localhost" you don't have to change it. When

it's on your computer or server it still be localhost

Username = database usernamePassword = database passwordDatabase = database name

Example$host="localhost";$username=“root";$password="1234";$db_name="test";

mysql_connect("$host", "$username", "$password")or die("cannot connect to server");mysql_select_db("$db_name")or die("cannot select db");

mysql_connect("localhost", “root", "1234")or die("cannot connect to server");mysql_select_db("test")or die("cannot select db");

Creating file config.php

$host="localhost";$username=“root";$password="1234";$db_name="test";

mysql_connect("$host", "$username", "$password")or die("cannot connect to server");mysql_select_db("$db_name")or die("cannot select db");

Creating file config.php• Save this code as file "config.php", connect.php or whatever you want. • When you want to use this code include it to your main php file• Example

include("config.php");

$tbl_name="member";$sql="SELECT * FROM $tbl_name";$result=mysql_query($sql);...?>

INSERT DATA INTO MYSQL

Syntax

"INSERT INTO table_name(column_name1, column_name2)VALUES('value1, 'value2')" ;

Overview

• In this tutorial, create 2 files1. insert.php2. insert_ac.php

Steps1. Create table "test_mysql" in database "test".2. Create file insert.php.3. Create file insert_ac.php.

STEP1: Create table "test_mysql"

CREATE TABLE `test_mysql` (ìd` int(4) NOT NULL auto_increment,`name` varchar(65) NOT NULL default '',`lastname` varchar(65) NOT NULL default '',èmail` varchar(65) NOT NULL default '',PRIMARY KEY (ìd`)) TYPE=MyISAM AUTO_INCREMENT=0 ;

STEP2: Create file insert.php

• View In Browser

STEP2: Create file insert.php<table width="300" border="0" align="center" cellpadding="0" cellspacing="1"><tr><td><form name="form1" method="post" action="insert_ac.php"><table width="100%" border="0" cellspacing="1" cellpadding="3"><tr><td colspan="3"><strong>Insert Data Into mySQL Database </strong></td></tr><tr><td width="71">Name</td><td width="6">:</td><td width="301"><input name="name" type="text" id="name"></td></tr><tr><td>Lastname</td><td>:</td><td><input name="lastname" type="text" id="lastname"></td></tr><tr><td>Email</td><td>:</td><td><input name="email" type="text" id="email"></td></tr><tr><td colspan="3" align="center"><input type="submit" name="Submit" value="Submit"></td></tr></table></form></td></tr></table>

$datetime= date('Y-m-d H:i:s');$sql="INSERT INTO $tbl_name(name, lastname, email, datetime)VALUES('$name', '$lastname', '$email', '$datetime')";$result=mysql_query($sql);

STEP3: Create file insert_ac.php

• Diagram

STEP3: Create file insert_ac.php<?php

$host="localhost"; // Host name $username=""; // Mysql username $password=""; // Mysql password $db_name="test"; // Database name $tbl_name="test_mysql"; // Table name

// Connect to server and select database.mysql_connect("$host", "$username", "$password")or die("cannot connect"); mysql_select_db("$db_name")or die("cannot select DB");

// Get values from form $name=$_POST['name'];$lastname=$_POST['lastname'];$email=$_POST['email'];

// Insert data into mysql $sql="INSERT INTO $tbl_name(name, lastname, email)VALUES('$name', '$lastname', '$email')";$result=mysql_query($sql);

// if successfully insert data into database, displays message "Successful". if($result){echo "Successful";echo "<BR>";echo "<a href='insert.php'>Back to main page</a>";}

else {echo "ERROR";}?>

<?php // close connection mysql_close();?>

Another way connect to server and select database

• Use confing.php to connect to server and select database.

include("config.php");

SELECT DATA FROM MYSQL

Syntax

• When you need data from your mysql database to show in your web page, you need to select database, table and what's row you want to pull its data first.// Select all columns from all rows."SELECT * FROM table_name"; or// Select some column from all rows."SELECT column_name1, column_name2 FROM table_name";or// Select all coulumns from one row. "SELECT * FROM table_name WHERE column_name=' value in column '";

Overview

• In this tutorial, we'll create only 1 file.1. select.php

Steps1. Create table "test_mysql" in database "test".2. Create file select.php.3. test it!

Overview• If you don't want looping rows in mysql, replace

while($rows=mysql_fetch_array($result)){........<?php}mysql_close();?>

replace with this$rows=mysql_fetch_array($result);.........<?php mysql_close();?>

STEP1: Insert data into table "test_mysql"

• In this step, you have to insert data for testing our code.

INSERT INTO `test_mysql` VALUES (1, 'Billly', 'Blueton', 'bb5@phpeasystep.com');INSERT INTO `test_mysql` VALUES (2, 'Jame', 'Campbell', 'jame@somewhere.com');INSERT INTO `test_mysql` VALUES (3, 'Mark', 'Jackson', 'mark@phpeasystep.com');

STEP2: Create file - select.php

STEP2: Create file - select.php<?php

$host="localhost"; // Host name $username=""; // Mysql username $password=""; // Mysql password $db_name="test"; // Database name $tbl_name="test_mysql"; // Table name

// Connect to server and select database.mysql_connect("$host", "$username", "$password")or die("cannot connect"); mysql_select_db("$db_name")or die("cannot select DB");

// Retrieve data from database $sql="SELECT * FROM $tbl_name";$result=mysql_query($sql);?>

<table width="400" border="1" cellspacing="0" cellpadding="3"> <?php

// Start looping rows in mysql database.while($rows=mysql_fetch_array($result)){?>

<?php// close while loop }

</table>?>

<?php// close MySQL connection mysql_close();?>

STEP3: Run the Code

UPDATE DATA IN MYSQL

Syntax

• Update/Edit data from mysql database, can do it easily.

"UPDATE table_name SET column_name1=' value', column_name2=' value' WHERE column_name=' value' ";

Overview

• In this tutorial, we create 3 PHP files for testing our code.1. list_records.php2. update.php3. update_ac.php

Steps1. Create file list_records.php 2. Create file update.php3. Create file update_ac.php

STEP1: Create file - list_records.php

STEP2: Create file - update.php

STEP3: Create file - update_ac.php

DELETE DATA FROM MYSQL

Syntax

• Delete data from your mysql database."DELETE FROM table_name WHERE

column_name=' value' ";

Overview

• OverviewIn this tutorial create 2 files

1. delete.php2. delete_ac.php

Step1. Create file delete.php.2. Create file delete_ac.php.

STEP1: Create file - delete.php

STEP2: Create file delete_ac.php

ORDER MYSQL RESULTS

Overview

• You can order MySQL results using "ORDER BY"

1. ORDER BY column_name ASC 2. ORDER BY column_name DESC3. ORDER BY RAND().

1. ORDER BY column_name ASC is order by ascending.2. ORDER BY column_name DESC is order results by descending.3. ORDE BY RAND() is order results by random.

If you're not set this up the default is order results by ascending.

Syntax"SELECT column_name FROM table_name ORDER BY column_name

ASC";or"SELECT column_name FROM table_name";- This will select the records from mysql by ascending (ascending is the

default value).

"SELECT column_name FROM table_name ORDER BY column_name DESC";

- This will select the records from mysql by descending

"SELECT column_name FROM table_name ORDER BY RAND()";- This will select the records from mysql by random

Example Order by Ascending

Example Order by Descending

Example Order by Random

PHP LOGIN SCRIPT TUTORIAL

Overview

• Learn to create a simple login system with php + mysql script, this tutorial is easy to follow, teach you step by step.– In this tutorial, we create 3 php files for testing our

code.1. main_login.php 2. checklogin.php3. login_success.php

1. Create table "members" in database "test"2. Create file main_login.php3. Create file checklogin.php4. Create file login_success.php5. Create file logout.php

STEP1: Create table "members"

• For testing this code, we need to create database "test" and create table "members".

STEP1: Create table "members"

CREATE TABLE `members` (ìd` int(4) NOT NULL auto_increment,ùsername` varchar(65) NOT NULL default '',`password` varchar(65) NOT NULL default '',PRIMARY KEY (ìd`)) TYPE=MyISAM AUTO_INCREMENT=2 ;

-- -- Dumping data for table `members`--

INSERT INTO `members` VALUES (1, 'john', '1234');

STEP2: Create file main_login.php

• The first file we need to create is "main_login.php" which is a login form.

STEP3: Create file checklogin.php

• We have a login form in step 2, when a user submit their username and password, PHP code in checklogin.php will check that this user exist in our database or not.

• If user has the right username and password, then the code will register username and password in the session and redirect to "login_success.php".

• If username or password is wrong the system will show "Wrong Username or Password".

STEP3: Create file checklogin.php<?php

$host="localhost"; // Host name $username=""; // Mysql username $password=""; // Mysql password $db_name="test"; // Database name $tbl_name="members"; // Table name

// Connect to server and select databse.mysql_connect("$host", "$username", "$password")or die("cannot connect"); mysql_select_db("$db_name")or die("cannot select DB");

// username and password sent from form $myusername=$_POST['myusername']; $mypassword=$_POST['mypassword'];

// To protect MySQL injection $myusername = stripslashes($myusername);$mypassword = stripslashes($mypassword);$myusername = mysql_real_escape_string($myusername);$mypassword = mysql_real_escape_string($mypassword);

$sql="SELECT * FROM $tbl_name WHERE username='$myusername' and password='$mypassword'";$result=mysql_query($sql);

// Mysql_num_row is counting table row$count=mysql_num_rows($result);

// If result matched $myusername and $mypassword, table row must be 1 rowif($count==1){

// Register $myusername, $mypassword and redirect to file "login_success.php"session_register("myusername");session_register("mypassword"); header("location:login_success.php");}else {echo "Wrong Username or Password";}?>

STEP4: Create file login_success.php

• User can't view this page if the session is not registered.// Check if session is not registered, redirect back to main page. // Put this code in first line of web page. <?phpsession_start();if(!session_is_registered(myusername)){header("location:main_login.php");}?>

<html><body>Login Successful</body></html>

How to protect other pages?

• Just put this code to the other pages!// Check if session is not registered, redirect back to main page. // Put this code in first line of web page.

<?phpsession_start();if(!session_is_registered(myusername)){header("location:main_login.php");}?>

STEP5: Create file Logout.php

• If you want to logout, create this file. The code in this file will destroy the session.

// Put this code in first line of web page. <?php session_start();session_destroy();?>

Encrypting Password - Make your Login More Secure

• Use MD5

THANK YOU!

<td align="center"><a href="update.php?nombor=<?php echo $rows['id']; ?>">update</a> | <a href="delete_ac.php?id=<?php echo $rows['id']; ?>" onclick="return confirm('Are you sure you want to delete this entry?')">delete</a></td>

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