PHP: Avatar Hack

avatar.jpg.php

<?php
/*-------------------------
|
|   Instructions
|
\-------------------------*/

// Name this file index.php and place it in a folder named avatar.jpg on your server
// Then, when asked for your avatar url, give the location of the folder "avatar.jpg"

/*-------------------------
|
|   Set some variables
|
\-------------------------*/

// If you don't want to use the database, set this to "false" and ignore the next three constants
define("USE_DATABASE", true);
define("MYSQL_USERNAME", "yourMysqlUsername");
define("MYSQL_PASSWORD", "yourMysqlUserPassword");
define("MYSQL_DATABASE", "yourMysqlDatabaseName");

// If we are not using database we need to have something to display at the bottom of the image
// If we are using the database we can ignore this
$noDatabaseString = "No database here!";


// Set some variables about the avatar. 
$fontSize = 2;
$width = 150;
$margin = 2;
$search = "Your Search Queary";

// RGB values for the text and background colors
$textColor->red = 255;
$textColor->green = 255;
$textColor->blue = 255;

$backgroundColor->red = 0;
$backgroundColor->green = 0;
$backgroundColor->blue = 0;


/*--------------------------------------------------------
|
|   You should not need to change anything after this
|
\--------------------------------------------------------*/




// Connects to a mysql database
function connect($username, $password, $database)
{
	mysql_connect(localhost,$username,$password);
	@mysql_select_db($database) or die( "Unable to select database");
}

// Takes a search string and returns a random image url
function get_image_url($q){
	$q = urlencode($q);
	// The page of google images to look at. Use 0 for the first page
	$start = "0";
	$htmlString = file_get_contents("http://images.google.com/images?safe=off&q=$q&start=$start");
	$htmlArray = preg_match_all("-http[^\"]*jpg-", $htmlString, $imageUrls);
	return $imageUrls[0][array_rand($imageUrls[0])];
}



//Get the client's ip
$ip 		= $_SERVER['REMOTE_ADDR'];
// Get the client's browser
$browser 	= $_SERVER['HTTP_USER_AGENT'];

if(USE_DATABASE){
	// Connect to the sql server
	
	connect(MYSQL_USERNAME, MYSQL_PASSWORD, MYSQL_DATABASE);
	
	// Record this hit to the database
	mysql_query("INSERT INTO hits (ip, browser) VALUES (INET_ATON('$ip'), '$browser');");
	
	
	// Get the total number of hits out of the database
	$hits = number_format(mysql_num_rows(mysql_query("SELECT hit_id FROM hits;")));
	
	$bottomString = "Avatar Hits: $hits";
}else{
	$bottomString = $noDatabaseString;
}

$topString = "Your IP: $ip";

// Send the image header
header ("Content-type: image/jpg");

// Get the height of this font size
$fontHeight = imagefontheight($fontSize);

// Get the image url from google
$source = get_image_url($search);

// Find the dimensions of the source image
list($width_orig, $height_orig) = getimagesize($source);
// width/hight ratio of original image
$ratio_orig = $width_orig/$height_orig;
// Calculate the image height
$imageHeight = $width/$ratio_orig;
// Calculate the avatar height
$height = $imageHeight + (2 * $fontHeight) + (4 * $margin);
// Create the image
$im = imagecreatetruecolor($width, $height);
// Set a color for the text
$textColor = imagecolorallocate($im, $textColor->red, $textColor->green, $textColor->blue);
// Set a color for the background
$background = imagecolorallocate($im, $backgroundColor->red, $backgroundColor->green, $backgroundColor->blue);
// Fill the image with the background color
imagefill($im, 0, 0, $background);


// Get the source image
$srcImage = imagecreatefromjpeg($source);

// Insert the source image
imagecopyresampled($im, $srcImage, 0, ($margin + $margin + $fontHeight), 0, 0, ($width),  ($imageHeight), $width_orig, $height_orig);

// Print the strings to the image
imagestring ($im, $fontSize, $margin, $margin, $topString, $textColor);
imagestring ($im, $fontSize, $margin, ($height - ($fontHeight + $margin)), $bottomString, $textColor);
imagejpeg($im);
imagedestroy($im);
?>