igloo01
March 26th, 2006, 06:34 PM
This is the first part - the page you are taken to to enter the code:
The administrator part takes you to a different page if you enter the correct password (by adding that password onto the end of the address)
<?php
/*header*/
Header("Content-Type: image/png");
/* initialize a session. */
session_start();
session_unset();
ImageDestroy(verify.png);
/*We'll set this variable later.*/
$new_string;
/*register the session variable. */
session_register('new_string');
/*You will need these two lines below.*/
echo "<html><head><title>Guestbook Verification</title></head>";
echo '<body bgcolor="#D3D3D3" text="#000000" link="#0000FF" vlink="#FF0000">';
/* set up image, the first number is the width and the second is the height*/
$im = ImageCreate(200, 40);
/*creates two variables to store color*/
$white = ImageColorAllocate($im, 255, 255, 255);
$black = ImageColorAllocate($im, 0, 0, 0);
/*random string generator.*/
/*The seed for the random number*/
srand((double)microtime()*1000000);
/*Runs the string through the md5 function*/
$string = md5(rand(0,9999));
/*creates the new string. */
$new_string = substr($string, 17, 5);
/*fill image with black*/
ImageFill($im, 0, 0, $black);
/*writes string */
ImageString($im, 4, 96, 19, $new_string, $white);
/* output to browser*/
ImagePNG($im, "verify.png");
ImageDestroy($im);
/*I plugged our image in like I would any other image.*/
echo "<img src=\"verify.png\">";
echo "<br><br>";
echo "Please type the code you see in the image in the box below. (case sensitive)";
echo " <form action=\"guestbook.php\" method=post>";
echo "<input name=\"random\" type=\"text\" value=\"\">";
echo "<input type=\"submit\">";
/*Administrator enters password here*/
echo "<p>";
echo"Administrator only:";
echo "<input name=\"random2\" type=\"password\" value=\"\">";
echo "</form>";
echo "</body>";
echo "</html>";
?>
I'll post the next bit below.