Day 11 - PHP SESSION - Become PHP Expert in 30 days

**admin** · 05-23-2014, 06:13 AM

Originally Posted by annie

http://php.flashwebhost.com/annie/webcounter.php

Code:

<?php

session_start();
if (isset($_SESSION['webCounter'])) {
echo '<p>Welcome, you visited this page ' . $_SESSION['webCounter'] . ' times before. </p>';
$_SESSION['webCounter'] = $_SESSION['webCounter'] + 1 ;
} else {
echo '<p> This is your first visit to this page. Welcome! </p>';
$_SESSION['webCounter'] = 1;
}

Good, try other example.

@sherlyk, good, but don't use incremental operator, we are not here to confuse others, for most of us who know basic maths can figure out how to increase value of a variable by one. No increment operator needed for such a simple task. Lets code naturally.

Also when you do operation on a variable, it should exists. That is why we use isset() function, if not it will generate PHP error (warning), these are disabled on production servers, but when you code, always go for proper code, that will be easy to debug.

**sherlyk** · 05-23-2014, 06:39 AM

http://php.flashwebhost.com/sherly/winnernumber.php

Code:

<?php

// We need to call session_start() function before
// using session.

session_start();

// check if session is set if yes, read winnerNumber from session.
// If no session set, generate a random number, store it in session.

if (isset($_SESSION['winnerNumber'])) {
    $winnerNumber = $_SESSION['winnerNumber'];
} else {
    $winnerNumber = rand(1,150);
    $_SESSION['winnerNumber'] = $winnerNumber;
}

// a user can play only once, then restart browser to play again.
// Try commenting code below and see.

if (isset($_POST['userNumber'])) {
    if ($_POST['userNumber'] == $winnerNumber) {
        $_SESSION['winnerNumber'] = rand(1,150);
    }
}

?>
<html>
<body>

<h1>Number Guessing Game.</h1>

<?php

if (isset($_POST['userNumber'])) {
    $userNumber = $_POST['userNumber'];
    if ($winnerNumber > $userNumber) {
        echo '<h1 style="color:yellow"> higher number.</h1>';
    } else if ($winnerNumber < $userNumber) {
        echo '<h1 style="color:green">lower number.</h1>';
    } else {
        echo '<h1 style="color:brown">Sorry you Lose !, The right number is.</h1>';
    }
}

?>

<form method="POST" action="">
    Enter Number: <input name="userNumber" type="text">
    <button type="submit">Try Here</button>
</form>

<h2>How to Play:</h2>

<pre>
* Server will pick a winner number between 1 and 150.
* You guess what number it is.
* If your guess is too high or too low, Server will give you a win.
* See how many turns it takes you to win!
</pre>

</body>
</html>

**admin** · 05-23-2014, 06:43 AM

Originally Posted by sherlyk

http://php.flashwebhost.com/sherly/winnernumber.php

Code:

<?php

// We need to call session_start() function before
// using session.

session_start();

// check if session is set if yes, read winnerNumber from session.
// If no session set, generate a random number, store it in session.

if (isset($_SESSION['winnerNumber'])) {
    $winnerNumber = $_SESSION['winnerNumber'];
} else {
    $winnerNumber = rand(1,150);
    $_SESSION['winnerNumber'] = $winnerNumber;
}

// a user can play only once, then restart browser to play again.
// Try commenting code below and see.

if (isset($_POST['userNumber'])) {
    if ($_POST['userNumber'] == $winnerNumber) {
        $_SESSION['winnerNumber'] = rand(1,150);
    }
}

?>
<html>
<body>

<h1>Number Guessing Game.</h1>

<?php

if (isset($_POST['userNumber'])) {
    $userNumber = $_POST['userNumber'];
    if ($winnerNumber > $userNumber) {
        echo '<h1 style="color:yellow"> higher number.</h1>';
    } else if ($winnerNumber < $userNumber) {
        echo '<h1 style="color:green">lower number.</h1>';
    } else {
        echo '<h1 style="color:brown">Sorry you Lose !, The right number is.</h1>';
    }
}

?>

<form method="POST" action="">
    Enter Number: <input name="userNumber" type="text">
    <button type="submit">Try Here</button>
</form>

<h2>How to Play:</h2>

<pre>
* Server will pick a winner number between 1 and 150.
* You guess what number it is.
* If your guess is too high or too low, Server will give you a win.
* See how many turns it takes you to win!
</pre>

</body>
</html>

How this works ?

PHP Code:


 echo '<h1 style="color:brown">Sorry you Lose !, The right number is.</h1>';

What is the right number ? It just say sorry, Sorry you Lose !, The right number is .............and did not print any Number, that too after i find correct number,

**annie** · 05-23-2014, 07:55 AM

http://php.flashwebhost.com/annie/numbergame.php

Code:

<?php
session_start();
if (isset($_SESSION['secretNumber'])) {
$secretNumber = $_SESSION['secretNumber'];
} else {
$secretNumber = rand(1,100);
$_SESSION['secretNumber'] = $secretNumber;
}
if (isset($_POST['userNumber'])) {
if ($_POST['userNumber'] == $secretNumber) {
$_SESSION ['secretNumber'] = rand(1,100);
}
}
?>
<html>
<body>


<h1> Number Guessing Game. </h1>
<?php

if (isset($_POST['userNumber'])) { 
$userNumber = $_POST['userNumber'];
if ($secretNumber > $userNumber) {
echo '<h1 style="color:red">Your number is too SMALL.</h1>';
} else if ($secretNumber < $userNumber) {
echo '<h1 style="color:blue">Your number is too BIG.</h1>';
} else {
echo '<h1 style="color:green">You win the game.</h1>';
}
}

?> 

<form method="POST" action="">
    Enter Number: <input name="userNumber" type="text">
    <button type="submit">Check</button>
</form> 

</body>
</html>

**admin** · 05-23-2014, 08:08 AM

Originally Posted by annie

http://php.flashwebhost.com/annie/numbergame.php

Code:

<?php
session_start();
if (isset($_SESSION['secretNumber'])) {
$secretNumber = $_SESSION['secretNumber'];
} else {
$secretNumber = rand(1,100);
$_SESSION['secretNumber'] = $secretNumber;
}
if (isset($_POST['userNumber'])) {
if ($_POST['userNumber'] == $secretNumber) {
$_SESSION ['secretNumber'] = rand(1,100);
}
}
?>
<html>
<body>


<h1> Number Guessing Game. </h1>
<?php

if (isset($_POST['userNumber'])) { 
$userNumber = $_POST['userNumber'];
if ($secretNumber > $userNumber) {
echo '<h1 style="color:red">Your number is too SMALL.</h1>';
} else if ($secretNumber < $userNumber) {
echo '<h1 style="color:blue">Your number is too BIG.</h1>';
} else {
echo '<h1 style="color:green">You win the game.</h1>';
}
}

?> 

<form method="POST" action="">
    Enter Number: <input name="userNumber" type="text">
    <button type="submit">Check</button>
</form> 

</body>
</html>

Nice, working properly. Try to understand this code.

**stefin** · 05-23-2014, 08:28 AM

http://php.flashwebhost.com/stefin/counter.php

Code:

<?php


session_start();


if (isset($_SESSION['foodcounter'])) {


    echo '<p>Welcome, you visited this page ' . $_SESSION['foodcounter'] . ' times before.</p>';
    $_SESSION['foodcounter'] = $_SESSION['foodcounter'] + 1;
    echo '<p>we have all types of food here american, african, japanese, chines, italian, indian and many more.</p>';
    echo '<p>OFFER, FREE HOME DELIVERY, if we are even a second  later than 30 min the food is free.</p>';
} else {


    echo '<p>Welcome, this is your first visit to our website.</p>';
    
    $_SESSION['foodcounter'] = 1;


}

**admin** · 05-23-2014, 08:32 AM

Originally Posted by stefin

http://php.flashwebhost.com/stefin/counter.php

Code:

<?php


session_start();


if (isset($_SESSION['foodcounter'])) {


    echo '<p>Welcome, you visited this page ' . $_SESSION['foodcounter'] . ' times before.</p>';
    $_SESSION['foodcounter'] = $_SESSION['foodcounter'] + 1;
    echo '<p>we have all types of food here american, african, japanese, chines, italian, indian and many more.</p>';
    echo '<p>OFFER, FREE HOME DELIVERY, if we are even a second  later than 30 min the food is free.</p>';
} else {


    echo '<p>Welcome, this is your first visit to our website.</p>';
    
    $_SESSION['foodcounter'] = 1;


}

Come after 31 minutes please.

**minisoji** · 05-26-2014, 09:39 AM

http://php.flashwebhost.com/mini/1.php

Code:

<?php

session_start();

if (isset($_SESSION['guestCounter'])) {
echo '<p>Welcome, you visited this page ' . $_SESSION['guestCounter'] . ' times before.</p>'; 
$_SESSION['guestCounter'] = $_SESSION['guestCounter'] + 1;
} else {
echo '<p>Welcome, this is your first visit to this web page.</p>';
$_SESSION['guestCounter'] = 1;
}

Thread: Day 11 - PHP SESSION - Become PHP Expert in 30 days

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