Introduction to PHP

PHP :ntroduction> Powered by www.RedOffice.com K.Sarveswaran Department of Computer Science, University of Jaffna [email_address]

Some references ,[object Object],[object Object],[object Object],[object Object]

Scripting languages ,[object Object],[object Object],[object Object]

Scripting languages ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Introduction to PHP ,[object Object],[object Object]

PHP - History ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

PHP - History ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],http://www.php.net/manual/en/history.php.php

2.0 Setting up environment ,[object Object],[object Object],[object Object]

2.1 Requirements ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

2.2 Install XAMPP ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

2.3 Test the environment ,[object Object],[object Object],[object Object],[object Object],[object Object]

3.0 PHP programming fundamentals

3.0 PHP Programming fundamentals ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

3.1 Syntax definition ,[object Object],Method 1 <?php //php codes ?> Method 2 <? //php codes ?> *short_open_tag Method 3 <script language=''php''> //php codes </script> Method 4 <% //php codes %> *asp_tags

3.1 Syntax definition ,[object Object],[object Object],[object Object]

3.1 Syntax definition ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

3.1 Syntax definition ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

3.1 Syntax definition ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

3.1 Syntax definition ,[object Object],[object Object],Type of first operand Type of second operand Final form Integer Float Float Integer String Number Float String Float

PHP Programming fundamentals ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

3.2 Operators ,[object Object],[object Object]

3.3 Display data ,[object Object],[object Object],[object Object],[object Object]

PHP Programming fundamentals ,[object Object],[object Object],[object Object],[object Object],[object Object]

3.4 Control and Looping structures ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

3.5 Arrays ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

4.0 Form Handling ,[object Object],[object Object],[object Object],[object Object]

4.1 Task 1 ,[object Object],[object Object],[object Object],[object Object],[object Object],Task 1 : Write a PHP script (input_test.php) that checks whether the username is “user1” and if so it should display “Valid user” else it should give an error message saying “Invalid user”

4.2 Handling form data ,[object Object],[object Object],[object Object],[object Object]

4.3 HTML Form elements ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

4.3 HTML Form elements ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

4.3 HTML Form elements ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

4.4 Task - 2 ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

5.0 Some useful in-build functions

5.0 Useful in-build functions ,[object Object],[object Object],[object Object],[object Object]

6.0 File handling ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

6.1 Read and write to a text file ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

6.2 Task 3 Task 3 : Modify the profile_display.php so that the submitted content can be appended to a file

6.3 Integrate source files ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

6.4 File uploads ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

6.5 Task 4 Task 4 : Modify the profile_input.html so that users can upload their CV. Develop file_upload.php to check whether uploaded CV is in 'doc' format or 'pdf' format and the size of the CV is less than 100KB. Also save the uploaded file in a folder called uploads within your current directory

Hints for Task 4 ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

6.6 PHP file Configuration directives ,[object Object],[object Object],[object Object],[object Object],[object Object]

7.0 Database handling ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

7.1 PHP Database support ,[object Object],[object Object]

7.2 MySQL - 1 ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

7.2 MySQL - 2 ,[object Object],[object Object],[object Object],[object Object],[object Object]

7.3 Database handing basics -1 ,[object Object],[object Object],[object Object],[object Object],[object Object],$db_handler = mysql_connect ('hostname', 'mysql_user', 'mysql_password'); if (!$db_handler) { die('Could not connect: ' . mysql_error ()); } mysql_select_db ("my_db", $db_handler);

7.3 Database handing basics -2 ,[object Object],[object Object],[object Object],[object Object],[object Object],$result = mysql_query ("SELECT * FROM table"); while($row = mysql_fetch_array ($result)) { echo $row['field1'] . " " . $row['field2']; } mysql_query ("INSERT INTO Table (Field1, Field2) VALUES ('Value1', 'Value2')");

7.3 Database handing basics -3 ,[object Object],[object Object],[object Object],[object Object],[object Object],mysql_query ("UPDATE Table SET field1 = '36' WHERE field2 = 'xyz' "); mysql_query ("DELETE FROM Table WHERE filed1=10 ");

7.3 Database handing basics -4 ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

7.4 Task 5 Task 5 : Create a MySQL database called Test_DB . Inside that create a Table called users according to the following instructions Fieldname datatype values id int 1 name text admin age int 23 gender varchar(10) Male qualification varchar(10) UG interests varchar(10) Reading shortbio text Nothing username varchar(20) admin password varchar(32) admin123

7.5 Task 6 Task 6 : Develop authentication mechanism to your profile update system. Use the database to do the authentication. Develop a script call index.php. In that script, accept the username and password from User and do authentication. Direct authenticated users to Profile update page (profile_display.php). Others should be given with “Access Denied ” message Profile_display.php 1. Write to file 2. save CV index.php Access denied index.php 1. Login form 2. Authentication NO YES File validation script

7.5 Hints for Task 6 ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

7.6 Task 7 Task 7 : Alter the profile_display.php so that it displays the existing user details (including a link to CV) at the top and give a input form to add details to database at the bottom. When a new user is added, the CV should be renamed to user's username and added to uploads directory.

8.0 Session handling ,[object Object],[object Object],[object Object],[object Object],[object Object]

8.2 Cookie ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

8.3 Session ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

8.4 Task 8 Task 8 : Develop a page, change_password.php, to facilitate user to change the password Make a link in your profile page for change_password.php Profile_display.php 1. Manage Profiles index.php Access denied index.php 1. Login form 2. Authentication NO YES change_password.php Change password

8.5 PHP Configuration directives ,[object Object],[object Object],[object Object],[object Object]

9.1 PHP- OOP basics - 1 ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

9.1 PHP- OOP basics - 2 ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

9.1 PHP- OOP basics - 3 ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Method invocation : Employee::greetEmp(); $emp=new Employee(); $emp->sayGoodbye();

9.1 PHP- OOP basics - 4 ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

9.1 PHP- OOP basics - 5 ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Calls : $employee1=new Employee(); Echo Employee::getEmp(); $employee2=new Employee(); Echo Employee::getEmp();

9.1 PHP- OOP basics - 6 ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

10.0 PHP runtime Configuration of directives

10.0 PHP run time Configuration directives ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

11.0 PHP Libraries ,[object Object],[object Object],[object Object],[object Object],[object Object]

11.1 PEAR ,[object Object],[object Object],<?php require_once "DB.php"; $DB = DB::connect("mysql://user:root123@localhost/testdb"); if (DB::isError($DB)) echo "Cannot connect to database: " . $DB->getMessage(); else { $Query = "SELECT * FROM users"; $Result = $DB->query($Query); echo $NumResults = $Result->numRows(); } ?>

11.2 PDO ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

12.0 File System and OS Functions

12.0 File System and OS Functions ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

14.0 PHP Security ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

15.0 PHP IDEs ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

16.0 PHP systems ,[object Object],[object Object]

Thank you ! K.Sarveswaran, iamsarves@gmail.com. k.sarveswaran.lk

Introduction to PHP

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