PHP INSTALLATION & SAMPLES -BY H. ANKUSH. JAIN

PHP

INSTALLATION

&

SAMPLES

-BY H. ANKUSH. JAIN

WHAT IS PHP?

Hypertext Preprocessor widely used, general-purpose scripting

language a server side scripting language used on

the Internet to create dynamic web pages.

INSTALLATION

Install PHP 5 on Windows

1- Download the latest Windows PHP Binaries (MSI file)

2- Right click on the file and click “Install“.

3- Click “Next ” once the Welcome page is displayed.

4- Select “I accept the license agreement” and

click “Next “.

5- Change your PHP installation path OR just accept the default path - C:\Program Files\

PHP\ and click “Next

6- On the Web Server Setup screen, select the Apache 2.2.x Module and

click “Next

7-On the Apache Configuration Directory screen, browse for the Apache configuration directory (conf) OR just enter C:\Program Files\Apache Software Foundation\Apache2.2\

conf\ and click “Next ” to proceed with the installation.select-apache-webserver-configuration-directory

8- For now, accept the default selection and click

“Next”.

9-Click “Install ” to install PHP 5 on Windows.

10- Click “Finish ” once completed. PHP 5 is

successfully installed.

11- Start your Apache 2.2 server using the “Monitor Apache Servers” console (Start ->

Apache HTTP Servers 2.2.4 -> Monitor Apache Servers ). You can see that PHP was

successfully installed by checking the Apache status at the bottom of the console.

Test your PHP 5 Installation

1- Open up your Windows Notepad. Type in “<?php phpinfo(); ?>” inside the file. Save this file as “info.php”

inside your Apache root directory, C:\Program Files\Apache Software Foundation\Apache2.2\htdocs .

2- Open up your web browser. In the address bar, type in your web server domain

name plus info.php as the file name. Example: http://www.syahid.com/info.php . You should get a PHP configuration page

just like the one below.

Congratulations! You have successfully installed and test

PHP 5 on Windows!

PHP SAMPLES

Sample 1: current date in an HTML page

<html><head>

<title>Example #1 TDavid's Very First PHP Script ever!</title>

</head><? print(Date("l F d, Y")); ?>

<body></body></html>

2.current month/day/date format

<html><head>

<title>Example #3 TDavid's Very First PHP Script ever!</title>

</head><? print(Date("m/j/y")); ?>


3. current month/day/date with

HTML colors & formatting<html><head>

<title>PHP Script examples!</title></head>

<font face="Arial" color="#FF00FF"><strong><?

print(Date("m/j/y")); ?></strong></font>


4. change background color based on day of the week

using if else elseif statements<html><head>

<title>Background Colors change based on the day of the week</title>

</head><?

$today = date("l");print("$today");

if($today == "Sunday"){

$bgcolor = "#FEF0C5";}


using if else elseif statementselseif($today == "Monday"){

$bgcolor = "#FFFFFF";}

elseif($today == "Tuesday"){

$bgcolor = "#FBFFC4";}

elseif($today == "Wednesday"){

$bgcolor = "#FFE0DD";}

elseif($today == "Thursday"){$bgcolor = "#E6EDFF";}


using if else elseif statementselseif($today == "Friday")

{$bgcolor = "#E9FFE6";

}else

{// Since it is not any of the days above it must be Saturday

$bgcolor = "#F0F4F1";}

print("<body bgcolor=\"$bgcolor\">\n");?>

<br>This just changes the color of the screen based on the day of the week

</body></html>


using array<html><head>

<title>Background Colors change based on the day of the week</title></head><?$today = date("w");

$bgcolor = array("#FEF0C5", "#FFFFFF", "#FBFFC4", "#FFE0DD",

"#E6EDFF", "#E9FFE6", "#F0F4F1");

?><body bgcolor="<?print("$bgcolor[$today]");?>">

<br>This just changes the color of the screen based on the day of the week

</body></html>

5. add date time stamp "page last updated on.." using filemtime function using forms, cookies, flat file databases, random number generation

<html><head>

<title>Page last updated on month/date/year hour:min PHP Script</title>

</head><?

$last_modified = filemtime("example7.php3");print("Last Modified ");

print(date("m/j/y h:i", $last_modified));?>

</body></html>

6. setting and retrieving a cookie

<?$check = "test";

$check .= $filename;if ($test == $check)

{print("<HTML><BODY>You have already voted. Thank you.</BODY></HTML>");

}else{

$rated = "test";$rated .= $filename;

setcookie(test, $rated, time()+86400);print("<HTML><BODY><br>You haven't voted before so I

recorded your vote</BODY></HTML>");}

?>

7. getting an average number using PHP

<?$total_ratings = (3+2+3+1+5+2+3);

$total_votes = 7;$average = $total_ratings / $total_votes;print("The Average Rating Is: $average");

?>

8. showing the surfer average vote statistics, using printf function

<?$path = "/YOUR/PATH/TO/public_html/php_diary/data";

$filename = "122499.dat";$x= -1;

if($file = fopen("$path/$filename", "r")) { while(!feof($file))

{ $therate = fgetss($file, 255); $x++;

$count = $count + $therate; }

fclose($file); }

$average = ($count / $x);print("Surfer Average Rating for 12/24/99: ");

printf("%.2f", $average);print("<br>Total Surfer Votes: $x");

?>

9. generating a rand number from 0 to 9

<?srand(time());

$random = (rand()%9);print("Random number between 0 and 9 is:

$random");?>

10. php simple slot machine - multiple rand number generation

<?function slotnumber()

{srand(time());

for ($i=0; $i < 3; $i++){

$random = (rand()%3);$slot[] = $random;

}print("<td width=\"33%\"><center>$slot[0]</td>");print("<td width=\"33%\"><center>$slot[1]</td>");print("<td width=\"33%\"><center>$slot[2]</td>");

</tr>

11. php simple slot machine - multiple rand number generation

<tr> <td width="100%" colspan="3"

bgcolor="#008080"><form method="POST" action="example13.php3"><div

align="center"><center><p><input type="submit" value="Spin!"></p> </center></div>

</form> </td> </tr>

</table></center></div>

12. random text link advertising using predefined arrays

mail, regular expressions, password protection

<?$random_url =

array("http://www.tdscripts.com/linkorg.html", "http://www.tdscripts.com/keno.html",

"http://www.tdscripts.com/ezibill.shtml", "http://www.tdscripts.com/tdforum.shtml", "http://www.tdscripts.com/picofday.html",

"http://www.tdscripts.com/gutsorglory.html");

random text link advertising using predefined arrays

mail, regular expressions, password protection$url_title = array("Link Organizer",

"TD Keno", "eziBill *Free Promotion!",

"TD Forum", "TD Pic of Day PHP",

"Guts or Glory Poker PHP");$url_desc = array("- A comprehensive link list organizer",

"- Offer your site visitors an engaging Keno game without the monetary risk",

"- Sell access to and protect your membership area using iBill and our eziBill script",

"- An unthreaded messageboard script to exchange ideas with your site visitors",

"- Run your own picture of the day script from any site anywhere with this handy script",

"- A casino-style card game written entirely in PHP");

random text link advertising using predefined arrays

mail, regular expressions, password protection

srand(time());$sizeof = count($random_url);$random = (rand()%$sizeof);

print("<center><a href=\"$random_url[$random]\">$url_title[

$random]</a> $url_desc[$random]</center>");

?>

13. forcing the text in a string to be all upper or lowercase

<?// force all uppercase

print(strtoupper("i bet this will show up as all letters capitalized<br>"));

// force all lowercaseprint(strtolower("I BET THIS WILL SHOW UP AS ALL LETTERS IN

LOWERCASE<br>"));// force the first letter of a string to be capitalized

print(ucfirst("i bet this will show the first letter of the string capitalized<br>"));

// force the first letter of each WORD in a string to be capitalizedprint(ucwords("i bet this will show the first letter of every word

capitalized<br>"));?>

14. searching through meta tags for a search engine

<HTML><BODY>

<?$all_meta =

get_meta_tags("010600.php3");print($all_meta["description"]);

print("<br>");print($all_meta["keywords"]);

?></BODY></HTML>

15. searching through a directory and picking out files using a

regular expression<?

$diary_directory = opendir("."); while($filename = readdir($diary_directory))

{ $filesplit = explode(".", $filename);

$check_filename = $filesplit[0]; if(ereg("[0-9]{6}", $check_filename))

{ $check_filename .= ".$filesplit[1]";

$valid_filename[] = $check_filename; }

}closedir($diary_directory);

for($index = 0; $index < count($valid_filename); $index++){

print("$valid_filename[$index]<br>");}

?>

16. shuffling and "cutting" a deck of playing cards

<?$cards = array("ah", "ac", "ad", "as",

"2h", "2c", "2d", "2s", "3h", "3c", "3d", "3s", "4h", "4c", "4d", "4s", "5h", "5c", "5d", "5s", "6h", "6c", "6d", "6s", "7h", "7c", "7d", "7s", "8h", "8c", "8d", "8s", "9h", "9c", "9d", "9s", "th", "tc", "td", "ts", "jh", "jc", "jd", "js",

"qh", "qc", "qd", "qs", "kh", "kc", "kd", "ks");

shuffling and "cutting" a deck of playing cards

srand(time()); for($i = 0; $i < 52; $i++)

{ $count = count($cards);

$random = (rand()%$count); if($cards[$random] == "")

{ $i--;

} else

{ $deck[] = $cards[$random];

$cards[$random] = ""; }

}

shuffling and "cutting" a deck of playing cards

srand(time());$starting_point = (rand()%51);

print("Starting point for cut cards is: $starting_point<p>");

// display shuffled cards (EXAMPLE ONLY) for ($index = 0; $index < 52; $index++)

{ if ($starting_point == 52) { $starting_point = 0; }

print("Uncut Point: <strong>$deck[$index]</strong> "); print("Starting Point:

<strong>$deck[$starting_point]</strong><br>"); $starting_point++;

}?>

17. Reader rated most useful diary entries in descending order

<HTML><HEAD>

<title>Reader Rated Most Useful Entries</title></HEAD><BODY>

<table border="0" width="100%"><tr>

<td width="6%" bgcolor="#00FFFF"><p align="center"><small><font

face="Verdana">Rank</font></small></td><td width="7%" bgcolor="#00FFFF"><p

align="center"><small><font face="Verdana">Rating</font></small></td>

Reader rated most useful diary entries in descending order

<td width="11%" bgcolor="#00FFFF"><p align="center"><small><font face="Verdana">Diary

Date</font></small></td><td width="76%" bgcolor="#00FFFF"><p

align="left"><small><font face="Verdana">Descriptionof Diary Page</font></small>

</td><script language="php">$db = "DATABASE NAME";

$admin = "MYSQL USER NAME";$adpass = "MYSQL PASSWORD";

$mysql_link = mysql_connect("localhost", $admin, $adpass);

mysql_select_db($db, $mysql_link);

Reader rated most useful diary entries in descending order$query = "SELECT * FROM avg_tally ORDER BY average DESC";

$result = mysql_query($query, $mysql_link);if(mysql_num_rows($result)) {

$rank = 1; while($row = mysql_fetch_row($result))

{ print("</tr><tr>");

if($color == "#D8DBFE") { $color = "#A6ACFD";

} else { $color = "#D8DBFE";

} print("<td width=\"6%\" bgcolor=\"$color\"><center><small>");

print("<font face=\"Verdana\">$rank</font></small></center></td>");

print("<td width=\"7%\" bgcolor=\"$color\"><center><small>"); print("<font

face=\"Verdana\"><strong>$row[1]</strong></font></small></center></td>");

print("<td width=\"11%\" bgcolor=\"$color\"><center><small>"); $url = $row[2] . ".php3";

Reader rated most useful diary entries in descending order

if(!file_exists($url)) { $url = $row[2] . ".html"; } print("<font face=\"Verdana\"><a

href=\"$url\">$row[2]</a></font></small></center></td>");

print("<td width=\"76%\" bgcolor=\"$color\"><left><small>");

print("<font face=\"Verdana\">$row[3]</font></small></left></td>")

; $rank++;

}}

</script></table></BODY></HTML>

18. creating a mySQL table using a PHP script

<?$mysql_db = "DATABASE NAME";

$mysql_user = "YOUR MYSQL USERNAME";$mysql_pass = "YOUR MYSQL PASSWORD";$mysql_link = mysql_connect("localhost",

$mysql_user, $mysql_pass);mysql_select_db($mysql_db, $mysql_link);

$create_query = "CREATE TABLE tds_counter ( COUNT_ID INT NOT NULL AUTO_INCREMENT,

pagepath VARCHAR(250), impressions INT,

reset_counter DATETIME, PRIMARY KEY (COUNT_ID) )";

19. creating a mySQL table using a PHP script

mysql_query($create_query, $mysql_link);print("Table Creation for <b>tds_counter</b>

successful!<p>");

$insert = "INSERT into tds_counter VALUES ( 0, '/php_diary/021901.php3', 0, SYSDATE()

)";

mysql_query($insert, $mysql_link);print("Inserted new counter successfully for this page: http://www.php-scripts.com/php_diary/021901.php3<

p>");

?>

20. mySQL based counter script for multiple pagesAutomating

manual tasks, date sorting, mktime()<?

$db = "DATABASE NAME";$admin = "MYSQL USER NAME";$adpass = "MYSQL PASSWORD";

$mysql_link = mysql_connect("localhost", $admin, $adpass);mysql_select_db($db, $mysql_link);

$result = mysql_query("SELECT impressions from tds_counter where COUNT_ID='$cid'", $mysql_link);

if(mysql_num_rows($result)) { mysql_query("UPDATE tds_counter set

impressions=impressions+1 where COUNT_ID='$cid'", $mysql_link);

$row = mysql_fetch_row($result); if($inv != 1) {

print("$row[0]"); }

}?>

21. Classify Email as Bounce (DSN) or Automated Reply

<?php

$bounce = new COM("Chilkat.Bounce");

$success = $bounce->UnlockComponent('Anything for 30-day trial');

if ($success == false) { print 'Failed to unlock component' . "\n";

exit;}

$email = new COM("Chilkat.Email");


// Load an email from a .eml file.// (This example loads an Email object from a .eml file,

// but the object could have been read// directly from a POP3 or IMAP mail server using

// Chilkat's POP3 or IMAP implementations.)$success = $email->LoadEml('sampleBounce.eml');

if ($success == false) { print $email->lastErrorText() . "\n";

exit;}

21. Classify Email as Bounce (DSN) or Automated Reply$success = $bounce->ExamineMail($email);

if ($success == false) { print $bounce->lastErrorText() . "\n";

exit;}

if ($bounce->BounceType == 1) { // Hard bounce, log the email address

print 'Hard Bounce: ' . $bounce->bounceAddress() . "\n";}

if ($bounce->BounceType == 2) { // Soft bounce, log the email address

print 'Soft Bounce: ' . $bounce->bounceAddress() . "\n";}

21. Classify Email as Bounce (DSN) or Automated Replyif ($bounce->BounceType == 3) {

// General bounce, no email address available. print 'General Bounce: No email address' . "\n";

}if ($bounce->BounceType == 4) {

// General bounce, log the email address print 'General Bounce: ' . $bounce-

>bounceAddress() . "\n";}

if ($bounce->BounceType == 5) { // Mail blocked, log the email address

print 'Mail Blocked: ' . $bounce->bounceAddress() . "\n";

}


if ($bounce->BounceType == 6) { // Auto-reply, log the email address

print 'Auto-Reply: ' . $bounce->bounceAddress() . "\n";}

if ($bounce->BounceType == 7) { // Transient (recoverable) Failure, log the email address

print 'Transient Failure: ' . $bounce->bounceAddress() . "\n";}

if ($bounce->BounceType == 8) { // Subscribe request, log the email address

print 'Subscribe Request: ' . $bounce->bounceAddress() . "\n";}

if ($bounce->BounceType == 9) { // Unsubscribe Request, log the email address

print 'Unsubscribe Request: ' . $bounce->bounceAddress() . "\n";}

21. Classify Email as Bounce (DSN) or Automated Replyif ($bounce->BounceType == 10) { // Virus Notification, log the email address

print 'Virus Notification: ' . $bounce->bounceAddress() . "\n";

}if ($bounce->BounceType == 11) {

// Suspected bounce. // This should be rare. It indicates that the Bounce // component found strong evidence that this is a

bounced // email, but couldn//t quite recognize everything it

// needed to be 100% sure. Feel free to notify // [email protected] regarding emails having this

// bounce type. print 'Suspected Bounce!' . "\n";}

?>

22. program to print a message

<html><h3>My first PHP Program</h3>

<? echo "Hello world!"; ?></html>

23. PHP Array<?php

$employee_names[0] = "Dana";$employee_names[1] = "Matt";

$employee_names[2] = "Susan";

echo "The first employee's name is ".$employee_names[0];

echo "<br>";echo "The second employee's name is ".

$employee_names[1];echo "<br>";

echo "The third employee's name is ".$employee_names[2];

?>

24.File Upload Script<html> <head>

<title>A File Upload Script</title> </head> <body> <div> <?php

if ( isset( $_FILES['fupload'] ) ) { print "name: ". $_FILES['fupload']['name'] ."<br />"; print "size: ". $_FILES['fupload']['size'] ." bytes<br />";

print "temp name: ".$_FILES['fupload']['tmp_name'] ."<br />";

print "type: ". $_FILES['fupload']['type'] ."<br />"; print "error: ". $_FILES['fupload']['error'] ."<br />";

if ( $_FILES['fupload']['type'] == "image/gif" ) { $source = $_FILES['fupload']['tmp_name'];

$target = "upload/".$_FILES['fupload']['name'];

24.File Upload Script move_uploaded_file( $source, $target );// or die ("Couldn't copy");

$size = getImageSize( $target ); $imgstr = "<p><img width=\"$size[0]\"

height=\"$size[1]\" "; $imgstr .= "src=\"$target\" alt=\"uploaded image\"

/></p>"; print $imgstr;

} } ?> </div>

<form enctype="multipart/form-data" action="<?php print $_SERVER['PHP_SELF']?>"

method="post"> <p>

<input type="hidden" name="MAX_FILE_SIZE" value="102400" />

<input type="file" name="fupload" /><br/> <input type="submit" value="upload!" />

</p> </form> </body> </html>

25.Simple File Upload Form<html>

<head><title>A Simple File Upload Form</title>

</head><body>

<form enctype="multipart/form-data" action="<?print $_SERVER['PHP_SELF']?>"

method="post"><p>

<input type="hidden" name="MAX_FILE_SIZE" value="102400" />

<input type="file" name="fupload" /><br/><input type="submit" value="upload!" />

</p></form></body></html>

26.Creating an HTML Form That Accepts Mail-

Related Information<html> <head>

<title>Simple Send Mail Form</title> </head><body>

<h1>Mail Form</h1> <form name="form1" method="post" action="SimpleEmail.php">

<table> <tr><td><b>To</b></td><td><input type="text"

name="mailto" size="35"></td></tr> <tr><td><b>Subject</b></td>

<td><input type="text" name="mailsubject" size="35"></td></tr>

<tr><td><b>Message</b></td> <td><textarea name="mailbody" cols="50"

rows="7"></textarea></td> </tr> <tr><td colspan="2">

<input type="submit" name="Submit" value="Send"> </td></tr></table></form></body>

</html>

26.Creating an HTML Form That Accepts Mail-

Related Information<!-- SimpleEmail.php

<?php if (empty ($mailto) ) {

die ( "Recipient is blank! ") ; }

if (empty ($mailsubject) ){ $mailsubject=" " ; } if (empty ($mailbody) ) {

$mailbody=" " ; } $result = mail ($mailto, $mailsubject, $mailbody) ;

if ($result) { echo "Email sent successfully!" ;

}else{ echo "Email could not be sent." ;

} ?>

27.React to Form action

<HTML><BODY>

<FORM METHOD="POST" ACTION="GetFormValue.php"> <H2>Contact List</H2>

<BR>Nickname: <BR><INPUT TYPE="TEXT" NAME="Nickname">

<BR> <BR>Full Name:

<BR><INPUT TYPE="TEXT" NAME="Fullname">

27.React to Form action

<BR> <BR>Memo: <BR><TEXTAREA NAME="Memo" ROWS="4" COLS="40"

WRAP="PHYSICAL"> </TEXTAREA> <BR> <BR>

<INPUT TYPE="SUBMIT"></FORM></BODY>

<!-- GetFormValue.php<?php

echo "<BR>Nickname=$Nickname"; echo "<BR>Fullname=$Fullname";

echo "<BR>Memo=$Memo";?>

28. Build query string based on form input

<?phpif (isset($_POST['submit'])) { $rowID = $_POST['id'];

mysql_connect("mysql153.secureserver.net","java2s","password

"); mysql_select_db("java2s");

$query = "SELECT * FROM Employee WHERE ID='$id'";

$result = mysql_query($query); list($name,$productid,$price,$description) =

mysql_fetch_row($result);}

28. Build query string based on form input

?><form action="<?php echo $_SERVER['PHP_SELF']; ?>"

method="post"> <select name="id">

<option name="">Choose a employee:</option> <option name="1">1</option> <option name="2">2</option> <option name="3">3</option>

</select> <input type="submit" name="submit" value="Submit" />

</form>

29. Checking input from a checkbox or a multiple

select<?php

$options = array('option 1', 'option 2', 'option 3');$valid = true;

if (is_array($_GET['input'])) { $valid = true;

foreach($_GET['input'] as $input) { if (!in_array($input, $options)) {

$valid = false; } }

if ($valid) { //process input

}}

?>

30. Validating a single checkbox

<?php$value = 'yes';

echo "<input type='checkbox' name='subscribe' value='yes'/> Subscribe?";

if (isset($_POST['subscribe'])) { if ($_POST['subscribe'] == $value) {

$subscribed = true; } else {

$subscribed = false;

30. Validating a single checkbox

print 'Invalid checkbox value submitted.'; }

} else { $subscribed = false;

}if ($subscribed) {

print 'You are subscribed.';} else {

print 'You are not subscribed';}

31. Deal with Array Form Data<HTML> <BODY>

<FORM METHOD="POST" ACTION="DealWithArrayFormData.php">

<H1>Contact Information</H1><TABLE><TR>

<TD>Childrens' Names:</TD></TR><TR>

<TD><INPUT TYPE="TEXT" NAME="children[]"></TD></TR><TR>

<TD><INPUT TYPE="TEXT" NAME="children[]"></TD></TR><TR>

<TD><INPUT TYPE="TEXT" NAME="children[]"></TD></TR>

31. Deal with Array Form Data

<TR> <TD><INPUT TYPE="TEXT" NAME="children[]"></TD>

</TR><TR>

<TD><INPUT TYPE="TEXT" NAME="children[]"></TD></TR>

</TABLE><BR><BR><BR>

<INPUT TYPE="SUBMIT" VALUE="Submit"><BR><BR>

<INPUT TYPE="RESET" VALUE="Clear the Form"></FORM></BODY></HTML>

31. Deal with Array Form Data

32. A process_form() Function

<?php function process_form($data) {

$msg = "The form at {$_SERVER['PHP_SELF']} was submitted with these values: \n\n";

foreach($data as $key=>$val) { $msg .= "$key => $val\n";

} mail("[email protected]", "form submission",

$msg);

}?>

33. Access widget's form value<INPUT TYPE="text"

NAME="myform.email">

would be accessed in PHP as the following:

<?php echo $_GET['myform_email'];

?>

34. Accessing multiple submitted values

<form method="POST" action="index.php"><select name="lunch[]" multiple>

<option value="a">A</option><option value="b">B</option><option value="c">C</option><option value="d">D</option><option value="e">E</option>

</select><input type="submit" name="submit">

</form>Selected buns:<br/><?php

foreach ($_POST['lunch'] as $choice) { print "You want a $choice bun. <br/>";

}?>

35. Forms and PHP//index.htm

<html><body>

<form action="index.php" method="post">Your Name:<br>

<input type="text" name="name" size="20" maxlength="20" value=""><br>Your Email:<br>

<input type="text" name="email" size="20" maxlength="40" value=""><br>

<input type="submit" value="go!"></form></body></html>

35. Forms and PHP

//index.php<html><head>

<title></title></head><body>

<? print "Hi, $name!. Your email address is $email";

?></body></html>

36. Handling Special Characters

<html><body> <?php

if ($_POST['submitted'] == "yes"){ $yourname = $_POST['yourname'];

$yourname = trim ($yourname); $yourname = strip_tags ($yourname);

$yourname = htmlspecialchars ($yourname); $yourname = addslashes ($yourname);

echo $yourname . "<br />"; ?><a href="index.php">Try Again</a><?php

}

36. Handling Special Charactersif ($_POST['submitted'] != "yes"){

?> <form action="index.php" method="post">

<p>Example:</p> <input type="hidden" name="submitted" value="yes" />

Your Name: <input type="text" name="yourname" maxlength="150" /><br />

<input type="submit" value="Submit" style="margin-top: 10px;" /> </form> <?php

} ?>

</div></body></html>

37. Saying "Hello"<?

if (array_key_exists('my_name',$_POST)) { print "Hello, ". $_POST['my_name'];

} else { print<<<_HTML_

<form method="post" action="$_SERVER[PHP_SELF]">

Your name: <input type="text" name="my_name"><br/>

<input type="submit" value="Say Hello"></form>_HTML_;

}?>

38. An HTML Form That Calls Itself

<html><head>

<title>An HTML Form that Calls Itself</title></head><body>

<div><?php

if ( ! empty( $_POST['guess'] ) ) { print "last guess: ".$_POST['guess'];

}?><form method="post" action="<?php print

$_SERVER['PHP_SELF']?>"><p>

Type your guess here: <input type="text" name="guess" /></p></form></div>

</body></html>

39. Form submitting

<?php if (isset($_POST['submit'])){

echo "Hi ".$_POST['name']."!<br />"; echo "The address ".$_POST['email']." will soon be a

spam-magnet!<br />"; }?>

<form action="index.php" method="post">Name:<input type="text" name="name" size="20"

maxlength="40" value="" />Email Address:

<input type="text" name="email" size="20" maxlength="40" value="" />

<input type="submit" name = "submit" value="Go!" /></form>

40. One-script form processing

//File: index.php<html><head>

<title></title></head><body>

<?$form = "<form action=\"index.php\" method=\"post\"><input type=\"hidden\" name=\"seenform\" value=\"y\">

<b>Give us some information!</b><br>Your Name:<br>

<input type=\"text\" name=\"name\" size=\"20\" maxlength=\"20\" value=\"\"><br>

40. One-script form processing

Your Email:<br><input type=\"text\" name=\"email\" size=\"20\"

maxlength=\"40\" value=\"\"><br><input type=\"submit\" value=\"subscribe!\">

</form>";if ($seenform != "y"):

print "$form";else :

print "Hi, $name!. Your email address is $email";endif;

?></body></html>

41. Preventing Multiple Submissions on the Client

Side<html>

<script language="javascript" type="text/javascript"> function checkandsubmit() {

document.test.submitbut.disabled = true; document.test.submit();

} </script><body>

<form action="index.php" method="post" name="test" onsubmit="return checkandsubmit ()">

<input type="hidden" name="submitted" value="yes" /> Your Name: <input

type="text" name="yourname" maxlength="150" />

41. Preventing Multiple Submissions on the Client

Side<input type="submit" value="Submit" id="submitbut"

name"submitbut" /></form></body></html><?php

if ($file = fopen ( "test.txt", "w+" )) { fwrite ( $file, "Processing" );

} else { echo "Error opening file.";

}echo $_POST ['yourname'];

?>

42. Preventing Multiple Submissions on the Server

Side<html><body>

<form action="index.php" method="post"><input type="hidden" name="submitted" value="yes" />

Your Name: <input type="text" name="yourname" maxlength="150"

/><br /><input type="submit" value="Submit" style="margin-top:

10px;" /></form></body></html><?php

session_start ();if (! isset ( $_SESSION ['processing'] )) {

$_SESSION ['processing'] = false;}

42. Preventing Multiple Submissions on the Server

Sideif ($_SESSION ['processing'] == false) {

$_SESSION ['processing'] = true; //validation

if ($file = fopen ( "test.txt", "w+" )) { fwrite ( $file, "Processing" );

} else { echo "Error opening file.";

} echo $_POST ['yourname'];

unset ( $_SESSION ['processing'] );}

?>

43. Authenticate user: Database based

<?php function authenticate_user() {

header('WWW-Authenticate: Basic realm="Secret Stash"');

header("HTTP/1.0 401 Unauthorized"); exit;

}

if (! isset($_SERVER['PHP_AUTH_USER'])) { authenticate_user();

} else { mysql_pconnect("localhost","authenticator","secret")

or die("Can't connect to database server!"); mysql_select_db("java2s") or die("Can't select

authentication database!");

43. Authenticate user: Database based

$query = "SELECT username, pswd FROM user WHERE username='$_SERVER[PHP_AUTH_USER]' AND

pswd=MD5('$_SERVER[PHP_AUTH_PW]')";

$result = mysql_query($query);

// If nothing was found, reprompt the user for the login information.

if (mysql_num_rows($result) == 0) { authenticate_user();

} }?>

44. Prompt Browser password dialog

<?php if (($_SERVER['PHP_AUTH_USER'] != 'specialuser') || ($_SERVER['PHP_AUTH_PW'] != 'secretpassword')) {

header('WWW-Authenticate: Basic Realm="Secret Stash"');

header('HTTP/1.0 401 Unauthorized'); print('You must provide the proper credentials!');

exit; }?>

45. Open browser password dialog and authenticate user based on database

<?php function authenticate_user() {

header('WWW-Authenticate: Basic realm="Secret Stash"');

header("HTTP/1.0 401 Unauthorized"); exit;

} if(! isset($_SERVER['PHP_AUTH_USER'])) {

authenticate_user(); }

45. Open browser password dialog and authenticate user based on database

else { mysql_connect("localhost","authenticator","secret") or

die("Can't connect to database server!"); mysql_select_db("gilmorebook") or die("Can't select

authentication database!"); $query = "SELECT username, pswd FROM user WHERE

username='$_SERVER[PHP_AUTH_USER]' AND

pswd=MD5('$_SERVER[PHP_AUTH_PW]') AND ipAddress='$_SERVER[REMOTE_ADDR]'";

$result = mysql_query($query); if (mysql_num_rows($result) == 0)

authenticate_user(); mysql_close();

}?>

46. Login ID Options<HTML>

<HEAD> <TITLE>Displaying Login ID Options</TITLE>

</HEAD> <BODY> <Hl><CENTER>Generating Login IDs for

Dave</CENTER></Hl> <?php $loginfo = array ( FirstName => "Joe",

LastName => "Howrod", Sex => "Male",

Location => "Arizona", Age => "24",

MusicChoice => "Pop", Hobby => "Dance",

Occupation => "Author"); echo "<H3>The information entered by JOe:<BR></H3>";

foreach ($loginfo as $key => $val) { echo "<B>$key</B> => $val<BR>"; }

46. Login ID Options

echo "<BR> "; echo "<H3>The login options are:<BR></H3>";

$loginone = array_slice ($loginfo, 0, 2); $logintwo = array_slice ($loginfo, 3, 2);

$loginthree = array_slice ($loginfo, 5, 2); $loginfour = array_slice ($loginfo, 6, 2);

$loginfive = array_merge ($loginfour, "2001"); echo "The first login option:<BR>"; foreach ($loginone as $optionone) {

echo "<B>$optionone</B>"; } echo "<BR>";

echo "The second login option:<BR>"; foreach ($loginone as $optiontwo) {

echo "<B>$optiontwo</B>"; } echo "<BR>";

46. Login ID Optionsn

echo "The third login option:<BR>"; foreach ($loginthree as $optionthree) {

echo "<B>$optionthree</B>"; } echo "<BR>";

echo "The fourth login option:<BR>"; foreach ($loginfour as $optionfour) {

echo "<B>$optionfour</B>"; } echo "<BR>";

echo "The fifth login option:<BR>"; foreach ($loginfive as $optionfive) {

echo "<B>$optionfive</B>"; }

echo "<BR>"; ?> </BODY> </HTML>

47. Get uniqid

<?$id = uniqid("phpuser");

echo "$id";

?>

48. Use md5 function to encrypt text

<?php $val = "secret";

echo "Pre-hash string: $val <br />"; $hash_val = md5 ($val);

echo "Hashed outcome: $hash_val";?>

49. md5 and uniqid

<?$id = md5(uniqid(rand()));

echo "$id";

?>

50. A user registration process

create table user_info (user_id char(18),fname char(15),email char(35));//File: index.php

<? $form = "<form action=\"index.php\" method=\"post\">

<input type=\"hidden\" name=\"seenform\" value=\"y\">Your first name?:<br>

<input type=\"text\" name=\"fname\" value=\"\"><br>Your email?:<br>

<input type=\"text\" name=\"email\" value=\"\"><br><input type=\"submit\" value=\"Register!\">

</form> ";

50. A user registration process

if ((! isset ($seenform)) && (! isset ($userid))) : print $form;

elseif (isset ($seenform) && (! isset ($userid))) : $uniq_id = uniqid(rand());

@mysql_pconnect("localhost", "root", "") or die("Could not connect to MySQL server!");

@mysql_select_db("user") or die("Could not select user database!");

$query = "INSERT INTO user_info VALUES('$uniq_id', '$fname', '$email')";

$result = mysql_query($query) or die("Could not insert user information!");

setcookie ("userid", $uniq_id, time()+2592000);

print "Congratulations $fname! You are now registered!.";

50. A user registration processelseif (isset($userid)) :

@mysql_pconnect("localhost", "root", "") or die("Could not connect to MySQL server!");

@mysql_select_db("user") or die("Could not select user database!");

$query = "SELECT * FROM user_info WHERE user_id = '$userid'";

$result = mysql_query($query) or die("Could not extract user information!");

$row = mysql_fetch_array($result); print "Hi ".$row["fname"].",<br>";

print "Your email address is ".$row["email"];endif;

?>

THANK YOU

PHP INSTALLATION & SAMPLES -BY H. ANKUSH. JAIN

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