Learn php with PSK

Learn
PHP
with
PSK
Learn PHP with Prabhjot Singh Kainth.
Prabhjot Singh Kainth is currently pursuing B.E in CSE from Thapar
University Patiala.
H Hostel Thapar University Patiala.

PRABHJOT SINGH KAINTH 2
ABOUT THE BOOK
This book is being written by Prabhjot Singh Kainth, currently pursuing
B.E in Computer Science from Thapar University Patiala.
He has written many other books on various languages.
This book is purely his own work, no code have been copied from any
other book/source.
This books doesn`t go in much details of PHP.It will only provide you
information necessary to start developing web pages.
This books comes with a zip file attached which contains some
examples.
Hope you will enjoy his small effort.
You can contact him through following ways:
Email:prabhjot409069@gmail.com
Facebook:www.facebook.com/prab409069
Mobile: +919814181928

Php stands for Hypertext preprocessor.
It is a server side scripting language (which means all the actions performed by the
script will be processed by server not the client).
Php is basically used to create dynamic websites (websites which return dynamic
data for example: facebook, google, youtube etc.).
You can find various definition and advantages of PHP in lots of books.
What are the data types involved in php?
There are integer, character, string, Boolean and float data type.
There is no such reserved keyword for data type (for ex: we have int for integer,
float for float data type in c/c++).
So how do we differentiate data types?
All data types are stored as variable in php with a $ sign.
Example will make things clear for you ($prab is the name of the variable you can
use anything instead of prab)
$prab=10; //makes it integer type
$prab=”Prabhjot”; //makes it string type
$prab=10.0; //makes it float type
$prab=true; //makes it Boolean type
// is used for comments.
How to print data in php?
You can use print but echo is more often used.
For example:
echo “Prabhjot”;

How to write php scripts?
All php script starts with <?php and ends with ?> as show below.
<?php
//your code
?>
Writing your first php script?
<?php
echo “My name is Prabhjot singh”;
?>
Result:
My name is Prabhjot singh
Now working more with variables:
$a=10;
$b=20;
echo “a”; //will print a not the value of a which is 10.
echo “$a”; // this will print 10 not a.
or simply type echo $a;
“ ” is used to print strings but php takes anything as variable if it starts with $
sign.
A simple program to add 2 numbers:
<?php
$a=10;
$b=20;
$c=$a+$b; //note if you simply use a+b it will return an error (discussed later why)
echo “$c”; or echo $c;
?>
How to concatenate strings with variables (suppose you want to print: Addition of
a and b is 30.how to do this)
For this we have a concatenation operator “.”, dot operator is used to
concatenate strings.

In above example:
echo “Addition of a and b is”. $c ;
// will print: Addition of a and b is 30
You can even concatenate two strings using this operator.
Moving onto loops and decisions:
The syntax remains the same as we have in c/c++ only difference comes is $ sign
for variables. For example:
For loop:
for($i=0;$i<=10;$i++)
{
echo $i;
}
Switch statements:
switch($i)
{
case 1:
echo “one”;
break;
default:
echo “wrong choice”;
break;
}

Moving onto Arrays
There are two types of array in php:
1. Indexed: Simple arrays as we have in c/c++.
2. Associative: This type of array is also referred to as a hash or map. With
associative arrays, each element is referenced by a string index.
You will get to know the difference between them later.
Arrays can be declared in following ways in php:
$arr=array(“apple”,”orange”,”mango”); //indexed array
$arr=array(“name”=>”Prabhjot”,”rollno”=>101203073,”branch”=>”Computer”);
//associative array
How to access elements of array?
echo $arr[0]; // will print apple in case of indexed array
echo $arr[“name”]; // will print Prabhjot .
You can also add items to an array:
$arr[3]=”grapes”;
$arr[0]=”banana”; // note it will replace apple
If you want to print an array whole in once (all the elements without loop),you can
use print_r() function:
For example: print_r($arr); // it will print apple orange mango.
You can use html tags within Php also,this process is known as fusion.
For example:
echo “Prabhjot”.’<br>’.”singh”;
This will print Prabhjot and singh in next line as breakline tag is being used.
echo "prabhjot".'<b>'."singh".'</b>';
This will print Prabhjot and singh in bold letters.
Please note html tags are used with single quote.

Some more functions related to Strings and Arrays
printf() and sprintf() functions:
As we use in c,we can use printf in the same way.
For ex: printf(“Answer is %d”,$i); //where i is an integer type.
You can also specify the precision of a floating point number as we do in c.
For ex: printf(“%0.4f”,123.45678) will result in 123.4567
Now if we want to store result and not to print it,sprint() is used.
$psk=sprintf(file_get_contents(“psk.txt”));
How to count elements of an Array?
Using count function.Suppose name of our array is arr.
$ctr=count($arr);
echo $ctr;
For each loop in array:
$arr= array( “cricket”, “football”, “Tennis”, “Hockey” );
foreach ( $arr as $val )
{
echo $val . “ < br/ > ”;
}
Where $val can be name of any variable.This will print all the elements of array.
Multi dimension array are also there but it is not necessary for web
development right now.
You can sort,merge and push-pop an array by following functions:
sort($arr); //sorting in ascending order for indexed array.
rsort($arr); //sorting in descending order for indexed array.
asort($arr); //sorting in ascending order for associative array.
arsort($arr); //sorting in descending order for associative array.
array_push($arr,”badminton”); // to insert an element at the end of the array.
array_pop($arr); // will pop an item from the end of the array.
array_merge($arr1,$arr2); // will merge two arrays named arr1 and arr2.

RUNNING A PHP PAGE
Before moving on further,we first have to learn how to run php pages.
Since php is a server side scripting language therefore we need a server to run php.
After writing your php script in notepad/any other software you need to save it
with .php extension.For ex: psk.php
But if you will open this directly as you do in case of html pages,nothing will be
processed.
So to process a php page we need servers like apache,IIS etc.
But it’s complicated to configure these servers for an amateur,therefore we will
use a software known as wamp or xampp.
You just need to install any of them.
After installing (I am assuming that you installed xampp),open xampp and you will
see some window like this.
Now click on start corresponding to Apache and MySQL also. That`s it you have
successfully started an Apache server.

Now go to C:xampphtdocs
Place your php files in htdocs folder.As shown below.
Now go to your web browser let’s say google chrome and then type on address bar
localhost and hit enter.You will see your files listed,click on your file and it will be
processed.
Screenshot will make things more clear for you.

Now you have learnt how to run php pages,we will now learn how to work with
html pages in php.
Before moving on please install Adobe Dreamviewer(it’s an application to
write html,php,javascripts).

WORKING WITH HTML FORMS AND PHP
Assuming you have learnt concepts of form in html classes,if not refer to my html
book(Learn Html with PSK).
Let`s suppose you want to create a simple page which gets username and
password from user,if username is Prabhjot and password is 1234 welcome
text is displayed.
Now send.html page:
<html>
<body>
<form action=”receive.php” method=”POST”>
Username:<input type=”text” name=”user”>
<br>
Password:<input type=”password” name=”pass”>
<input type=”submit” value=”login”>
</form>
</body>
</html>
receive.php is the name of the file which contains your php code and
method=”POST” means that username and password will be send to the server via
post method. You can also use GET method instead of POST,but POST is
preferred(you can see the difference between them after this tutorial).
Now receive.php :
<?php
$use=$_POST[‘user’];
$pas=$_POST[‘pass’];
if($use==”Prabhjot” && $pass=1234)
{
echo “welcome user”;
}
else
{
echo “login failed”;
}
?>

Understanding the php code written above.
$use and $pas are the names of the variables (it could be anything you want).
$_POST: it’s a syntax you have to use this when catching values from different
pages.
$_POST[‘user’]: ‘user’ is the name of the input field in our send.html page.
You can also use $_GET[‘user’] if you have used method=”GET” in send.html page.
Now save both of these files into your c:xampphtdocs folder.
Run send.html page and then see the results.
DIFFERENCE BETWEN POST AND GET METHOD
• The GET method sends the encoded user information appended to the
page request. The page and the encoded information are separated by the
? character as follows:
• http://www.psk.com?user=prabhjot&pass=1234
• The GET method is the defualt method to pass information from browser
to web server and it produces a long string that appears in your browser's
address bare. Never use the GET method if you have password or other
sensitive information to pass to the server. The GET method has size
limtations,only 1024 characters can be in a request string.
• A generally more reliable method of passing information to a backend
program is the POST method.
• This packages the information in exactly the same way as GET methods,
but instead of sending it as a text string after a ? in the URL it sends it as a
separate message.
• This message comes to the backend program in the form of the standard
input which you can parse and use for your processing.
• No characters limitations.
• Provides more security than GET method.

How to upload a file in html form using PHP
First of all we need two files upload.html and uploaded.php(names can be any)
Upload.html
<html>
<body>
<form action=”uploaded.php” method=”POST” enctype=”multipart/form-data”>
Upload file<input type=”file” name=”psk”>
<input type=”submit” value=”upload”>
</form>
</body>
</html>
What is enctype=”multipart/form-data”?
This attribute ensures that the form data is encoded as mulitpart MIME data, the
same format that is used for encoding file attachments in email messages , which
is required for uploading binary data such as files.
Uploaded.php
<?php
$filename=$_FILES[‘psk’][‘name’];
move_uploaded_file($_FILES['psk']['tmp_name'],”uploads/psk”);
echo “file”.$filename.”uploaded successfully”;
?>
Understanding the code:
$filename is a variable which is used to store the name of the file.
$FILES[‘psk’][‘name’] is used because we have name of the input field as psk in
upload.html page and ‘name’ is used because we have used name attribute(if we
have used id attribute then $FILES[‘psk’][‘id’]).
How to redirect to another page in PHP?
You can use header .For ex:
header(‘location:www.google.com’);

WORKING WITH QUERY STRINGS IN PHP
Suppose I want to pass an information from one page to another,this is done by
query string as you might be knowing.
send.php:
<?php
$user=”Prabhjot”;
header(‘location:receive.php?username=$user’);
?>
url will be something like this receive.php?username=Prabhjot
receive.php:
<?php
$username=$_GET[‘username’];
?>
$_GET[‘username’] is used because we have used username as the name attribute
in the url(see above).
Query strings are always caught by GET/REQUEST method not POST method.

WORKING WITH COOKIES IN PHP
How to create a cookie?
By using following:
setcookie(name,value,expires,path,domain,secure,HttpOnly);
name:name of the cookie
value:value of the cookie if any
expires:the time after which the cookie should get expire
path: The path that the browser should send the cookie back to.
domain: By default, a browser only sends a cookie back to the exact computer that
sent it.But if you want any other computer to receive a cookie back.
Secure:This ensures that the cookie will only be sent if there is a secure
connections that is https connection
HttpOnly:Cookies will only be used by browser which makes request via HTTP
For example:
setcookie(“psk”,0,time()+60*60*2,”/data”,”www.psk.com”,false,true);
Please note time is in milliseconds.
How to access cookies?
It`s very simple.
echo $_COOKIE[“psk”];
If you want to display welcome message only if cookie psk is running.
<?php
$cook=$_COOKIE[“psk”];
if($cook)
{
echo “welcome user”.$cook;
}
?>

WORKING WITH SESSIONS IN PHP
How to create a session?
By using session_start();
How to write and read sessions?
$_SESSION[‘name of the session’]=value of the session; // writing session
echo $_SESSION[‘name of the session’]; // reading session
For example:
<?php
session_start();
$_SESSION[‘psk’]=”Prabhjot”;
echo $_SESSION[‘psk’];
?>
How to destroy a session?
By using session_destroy();
For example:
If session psk is Prabhjot redirect to www.google.com, if it is prakhar redirect to
www.facebook.com.
<?php
session_start();
$sess=$_SESSION[‘psk’];
if(sess==”Prabhjot”)
{
header(‘location:www.google.com’);
}
if(sess==”prakhar”)
{
header(‘location:www.facebook.com’);
}
?>

WORKING WITH FILES AND DIRECTORIES IN PHP
file_exists(“c:/psk.txt”); // this will return true if the file exists else false.
filesize(“/home/psk.txt”); // will return the size of the file.
How to get the name of the file?
$filename=basename(“/home/psk.txt”);
How to open files in php?
$handle=fopen(“path of the file”,”permission”);
$handle is a resource data type that is associated with file open.
Permission means the rights on the file whether we have open that file for
reading or writing purpose.
For ex:
$handle=fopen(“/home/psk.txt”,”r”); //means psk.txt is opened only for reading
purpose.
$handle=fopen(“/home/psk.txt”,”w”); //means psk.txt is opened only for writing
purpose.
If we use a then it means file is opened only for appending purpose.
How to close files in php?
fclose($handle);
How to read and write from file in php?
By following functions:
fread() — Reads a string of characters from a file
fwrite() — Writes a string of characters to a file
fgetc() — Reads a single character at a time
feof() — Checks to see if the end of the file has been reached
fgets() — Reads a single line at a time
file() — Reads an entire file into an array
Examples on next page.

$handle=fopen(“psk.txt”,”r”);
$ans=fread($handle,5); // this will read only first 5 characters of the file
$handle=fopen(“psk.txt”,”w”);
fwrite($handle,”Prabhjot”); // this will write Prabhjot at the end of the file.
fwrite($handle,”Prabhjot”,5); // this will write only first 5 characters of Prabhjot at
the end of the file.
How to change permissions of file in php?
By using chmod(path of the file,permission);
For ex: chmod(“/home/psk.txt”,0166);
0166 is basically UNIX based permission granting technique you can learn this
from google.
How to copy,rename or delete files in php?
copy(source,destination);
Ex:copy(“/home/psk.txt”,”/download/ps.txt”);
rename(oldname,newname);
Ex:rename(“/home/psk.txt”,”/home/prab.txt”);
unlink() function is used to delete files in php.
Ex:unlink(“/home/psk.txt”);
WORKING WITH DIRECTORIES
Same as file are opened or close,only difference instead of fopen or fclose use
opendir or closedir.
For ex: $handle=opendir(“/home/download”);
closedir($handle);
$file=readdir($handle); // will read contents of the directory.
How to create or delete directory?
mkdir(“/home/download/psk”); //will create psk folder
rmdir(“/home/download/psk”); //will remove psk folder

WORKING WITH MYSQL IN PHP
This is the most important topic of this book.
Before starting we must first set up a MYSQL server to handle sql queries.
Remember when we were setting up Apache server,we clicked on MYSQL start if
not then go back to xampp control panel and click on start corresponding to
MySQL.
After doing this step go to your browser and type localhost/phpmyadmin and a
window something like this will open.
Now from left hand side click on new to create a new database(Assuming the
name of the database is psk).
Then click on psk database from the list and then create a table named as
details.
Then create two columns one username and another password with varchar
datatype.( I am assuming that you know some basic concepts of sql if not
then refer to my book Learn simple MySQL with psk)
Screenshots will help you don`t worry.

TABLE CREATION
COLUMN CREATION

After setting up the server our next task is to link php with Mysql.
For this in our php code we need to include following things.
<?php
$con=mysql_connect('servername','username','password');
mysql_select_db('databasename',$con);
?>
$con is the name of the variable (you can use any of your choice).
mysql_connect is a syntax use to connect to Mysql.
servername is the name of the server,in our case localhost.
Username is the username for accessing the server by default it is root
Password: by default empty.
Mysql_select_db is use to select database.
So this is how our connection will look like:
$con=mysql_connect(‘localhost’,’root’,’’);
mysql_select_db(‘psk’,$con);
WORKING WITH QUERIES(Please note name of our table is details)
SELECT QUERY:
mysql_query(“select * from details”,$con);
It`s better to store this in a variable(usually $data is used but you can use any) as
data which is returned by select query come in form of an array.
$data= mysql_query(“select * from details”,$con);
Take another variable to fetch data in array form usually $row is used.
$row=mysql_fetch_array($data);
Now to print data:
echo $row[‘name of the column’];
for ex:we have 2 columns in our details table,namely username and password
echo $row[‘username’]; //will only print first entry in the table not all values.

So how to print all data returned by select query?
Simply use a loop as we do in c/c++.
For example:
while($row=mysql_fetch_array($data)
{
echo $row[‘username’];
}
INSERT QUERY:
mysql_query(“insert into `details` (ùsername`,`password`)
values(‘prab40’,’1234’)”,$con);
UPDATE QUERY:
mysql_query(“update `details` set ùsername`=‘prab40’ `password`=’1234’
”,$con);
Please note: ` ` is different from ‘ ‘
DELETE QUERY:
mysql_query(“delete from `details` where ùsername`=’prab40’ “,$con);
Next page will show you how to create a login page and check if username exists
in the database or not,if username and password are correct then create a
session named id of username and then redirect to home.html page else return
login details wrong.

Login.html
<html>
<body>
<form action=log.php method=”POST” >
Enter username:<input type=”text” name=”user”><br>
Enter password:<input type=”password” name=”pass”><br>
<input type=”submit” value=”login”>
</form>
</body>
</html>
log.php
<?php
session_start();
$user=$_POST[‘user’];
$pass=$_POST[‘pass’];
$data=mysql_query(“select * from details where `username`=’$user’ “,$con);
$row=mysql_fetch_array($data);
if($pass==$row[‘password’])
{
$_SESSION['id']=$user;
header(‘location:home.html’);
}
else
{
echo “wrong login details”;
}
?>

Now if suppose you have 50 pages in your website which uses sql
connection,every time you have to write connection code but we can reduce
our job by creating a separate file which only have connection code and then
include that in every page.
For example:
lib.php
<?php
?>
Now to use this page in another page,we have to use include function as we
have in c/c++ but with some changes.
For example in login.php I have to use lib.php
Login.php
<?php
include(‘lib.php’);
?>

SOME MORE FUNCTIONS, ATTRIBUTES AND THINGS
RELATED TO PHP
How to print current date and time?
$dat=getdate();
echo $dat[“mday”].$dat[“month”].$dat[“year”];
echo $dat[“hours”].$dat[“minutes”];
How to get IP address of your website visitor?
echo “Your IP address is: “ . $_SERVER[“REMOTE_ADDR”];
How to create a random number/text?
$psk=rand(1,10);
echo $psk.$psk.$psk; //will generate a 3 digit number(concatenate more if you
want more digits)
$psk='ABCDEFGHIJKLMNOPQRSTUVWXYZ';
$text= $psk[rand(0,25)].$psk[rand(0,25)]; //will generate text of 2 characters.
How to mail in php?
mail(“destination address”,”subject”,”message”);
example:mail(“prabhjot409069@gmail.com”,”application”,”hi”);

WORKING ON SECURITY IN PHP
First of all we will learn how to protect our website from vulnerability and then
encryption and decryption also.Since our password,username,session id or any
other sensitive data must be protected from unauthorized access therefore we
will implementing some methods to protect our website from getting hacked.
When we were creating session in above lessons,we were giving session value as
username.If someone somehow knows your username he can easily get access to
your website.
So to remove such vulnerabilities we should use some random session id
using random function.
For example:
$sess=rand(10,10000);
$_SESSION[‘login’]=$sess;
Always have validations on input fields,never allow any script to be as input.
For example: In an input field someone input something as:
<script>alert(“Website Hacked by Me”);</script>
You can make use of regular expression in javascript to remove such inputs from
being getting processed.This attack is well known as XSS attacks.
Some ways to remove XSS attacks:
Data Validation:To validate data
For example:to validate a phone number in php
if(preg_match(‘/^((1-)?d{3}-)d{3}-d{4}$/’,$phone))
{
echo $phone.”is correct”;
}

Data Sanitization:To remove unwanted data
For example:If your input field should have only text nothing else then:
$ans=strip_tags($_POST[‘name’]);
Output escaping:To prevent browser from applying any unintended meaning to
any special sequence of characters that may be found.
For example:
echo “You queried for”. Htmlspecialchars($_GET[‘nm’]);
Now to prevent SQL injection attacks:
SQL injection attacks can be prevented by using prepared statements.
What are prepared statements?
Prepared Statements do not combine variables with SQL strings,so it is not
possible for an attacker to modify the SQL query.
They combine the variables with compiled statement which means that SQL
query and variables are sent separately.
For example:
$user=$_GET[‘username’];
if($stmt=$mysqli->prepare(“select password from user where username=?”))
{
$stmt->bind_param(“s”,$user);
$stmt->execute();
$stmt->bind_result($password);
$stmt->fetch();
echo $password;
}

SOME ENCRYTION AND DECRYPTION TECHNIQUES
MD5 hash:Message Digest Hash
md5() function is used to calculate md5 hash of string.
Syntax:md5(string,raw);
String:your text.
Raw:specifies hex or binary output form(true for binary and false for hex)
For example:
$psk=”Prabhjot”;
echo md5($psk);
SHA1:Secured Hash Algorithm
sha1() function is used to calculate sha hash of string.
Syntax:sha1(string,raw);
String:your text.
Raw:specifies hex or binary output form(true for binary and false for hex)
For example:
$psk=”Prabhjot”;
echo sha1($psk);

EXAMPLE TO ADD ENCRYPTION AND DECRYPTION(source php website)
<?php
# --- ENCRYPTION ---
# the key should be random binary, use scrypt, bcrypt or PBKDF2 to
# convert a string into a key
# key is specified using hexadecimal
$key = pack('H*',
"bcb04b7e103a0cd8b54763051cef08bc55abe029fdebae5e1d417e2ffb2a00a3")
;
# show key size use either 16, 24 or 32 byte keys for AES-128, 192
# and 256 respectively
$key_size = strlen($key);
echo "Key size: " . $key_size . "n";
$plaintext = "This string was AES-256 / CBC / ZeroBytePadding encrypted.";
# create a random IV to use with CBC encoding
$iv_size = mcrypt_get_iv_size(MCRYPT_RIJNDAEL_128,
MCRYPT_MODE_CBC);
$iv = mcrypt_create_iv($iv_size, MCRYPT_RAND);
# creates a cipher text compatible with AES (Rijndael block size = 128)
# to keep the text confidential
# only suitable for encoded input that never ends with value 00h
# (because of default zero padding)
$ciphertext = mcrypt_encrypt(MCRYPT_RIJNDAEL_128, $key,
$plaintext, MCRYPT_MODE_CBC, $iv);
# prepend the IV for it to be available for decryption
$ciphertext = $iv . $ciphertext;
# encode the resulting cipher text so it can be represented by a string
$ciphertext_base64 = base64_encode($ciphertext);
echo $ciphertext_base64 . "n";
# Resulting cipher text has no integrity or authenticity added
# and is not protected against padding oracle attacks.

# --- DECRYPTION ---
$ciphertext_dec = base64_decode($ciphertext_base64);
# retrieves the IV, iv_size should be created using mcrypt_get_iv_size()
$iv_dec = substr($ciphertext_dec, 0, $iv_size);
# retrieves the cipher text (everything except the $iv_size in the front)
$ciphertext_dec = substr($ciphertext_dec, $iv_size);
# may remove 00h valued characters from end of plain text
$plaintext_dec = mcrypt_decrypt(MCRYPT_RIJNDAEL_128, $key,
$ciphertext_dec, MCRYPT_MODE_CBC, $iv_dec);
echo $plaintext_dec . "n";
?>

CREATING PAGE WHICH LISTS 100 CHECKBOXES WITH RANDOM VALUES
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Untitled Document</title>
<?php
$word=array();
$psk='ABCDEFGHIJKLMNOPQRSTUVWXYZ';
for($i=1;$i<=100;$i++)
{
$text= $psk[rand(0,25)].$psk[rand(0,25)].$psk[rand(0,25)].$psk[rand(0,25)];
$word[$i]=$text;
}
?>
</head>
<body>
<ul>
<?php
for($i=1;$i<=100;$i++)
{?>
<li style="display:inline">
<input type="checkbox" name="check_list[]" value="<?php echo $word[$i];?>"
/><?php echo $word[$i];?></li>   
<?php
if($i%8==0)
{?> </br></BR>
<?php }
?>
<?php }?>
</ul>
</body>
</html>

TEXT TO SPEECH CONVERSION USING GOOGLE TRANSLATE
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Text to speech APi</title>
<?php
if($_POST){
$text=substr($_POST['ps'],0,100);
$text=urlencode($text);
$file='psk';
$file=$file.".mp3";
$mp3=file_get_contents("http://translate.google.com/translate_tts?tl=en&q=$te
xt");
file_put_contents($file,$mp3);
}
?>
</head>
<body>
<form action="" method="post">
Enter your text here
<input type="text" name="ps" /><br />
<input type="submit" name="submit" />
<br />
</form>
<br />
<?php if($_POST)
{?>
<audio controls="controls" autoplay="autoplay">
<source src="<?php echo $file;?>" type="audio/mp3" />
</audio>
<?php } ?>
</body>
</html>

ATTACHED ZIP INCLUDES FOLLOWING THINGS
• Webkiosk(Student Information Management website of Thapar
university created by Prabhjot Singh Kainth)
• FaceMash(FaceMash website which was originally created by
Mark Zuckerberg to rate people)
• CAPTCHA implementation in php by Prabhjot Singh Kainth
• Online T-shirt ordering system
• A love calculator website(please note it may be funny but do have
a look on the algorithm used)
• Text to Speech Conversion using google translation by Prabhjot
Singh Kainth
• A facebook home page look like which changes according to your
device size by Prabhjot Singh Kainth
• Music website which plays songs according to the selected mood
by Prabhjot Singh Kainth
*by Prabhjot Singh Kainth means this is original work by him rest
means he has edited the code of some other person.

Learn php with PSK

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