Algorithms
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<?
/*
* Requirement : Uncomment 'extension=php_gd2.dll' in PHP.INI [Remove the semi-colon(;)]
* Usage : Generating Turing Number,place the mouse over the image if the number is not clear
* EMail : saneeshkv@yahoo.com
*/
header("Content-type: image/png");
$new_string="";
echo "<html>
<head>
<title>
Verification
</title>
</head>
<body>";
$im = ImageCreate(58,22); // ImageCreate(X,Y)
//$im = imagecreatefrompng("San.png"); // Also can set image as background
function make_seed()
{
list($usec, $sec) = explode(' ', microtime());
return (float) $sec + ((float) $usec * 100000);
}
srand(make_seed());
$string = md5(rand(0,9999));
$new_string = strtoupper(substr($string, rand(0,26), 5));
$color_back = ImageColorAllocate($im, 255,255,255); // ImageColorAllocate(Image Resource,R,G,B)
ImageFill($im, 0, 0, $color_back); // Image's Background Color.
//$text_color = ImageColorAllocate($im, rand(0,225), rand(0,225), rand(0,225));
$text_color = ImageColorAllocate($im, 225,0,0);
// imagestring ($im,5,5,3, $new_string , $text_color);
ImageTTFText ($im, 10, 0, 8, 15, $text_color, "Verdana.ttf", $new_string);
//$color_line = ImageColorAllocate($im, 225,190,102);
$color_line = ImageColorAllocate($im, rand(0,225), rand(0,225), rand(0,225));
for($i=0;$i<25;$i+=5)
imageline ($im,0,$i,54,$i,$color_line); // Horizondal Lines
for($i=0;$i<60;$i+=5)
imageline ($im,$i,0,$i,22,$color_line); // Vertical Lines
ImagePNG($im, "verify.png"); // Create file named 'verify.png'
$new_spaced_string = "";
for($i=0;$i<strlen($new_string);$i++)
$new_spaced_string .= " ".$new_string[$i]." ";
print '<img src="verify.png" border=0 alt = "'.$new_spaced_string.'">';
ImageDestroy($im);
echo "
</body>
</html>";
exit;
/*
header("Content-type: image/png");
$string = "1234";//$_GET['text'];
$im = imagecreatefrompng("san3.png");
$orange = imagecolorallocate($im, 220, 210, 60);
$px = (imagesx($im) - 7.5 * strlen($string)) / 2;
imagestring($im, 3, $px, 9, $string, $orange);
imagepng($im);
imagedestroy($im);
print '
<table>
<tr>
<td align = center><img src = "san3.png"></td>
</tr>
</table>';
*/
header ("Content-type: image/png");
imagepng (LoadPNG ("./san3.png"));
function LoadPNG ($imgname)
{
$im = @imagecreatefrompng ($imgname);
if (!$im)
{
$im = imagecreate (150, 30);
$bgc = imagecolorallocate ($im, 255, 255, 255);
$tc = imagecolorallocate ($im, 0, 0, 0);
imagefilledrectangle ($im, 0, 0, 150, 30, $bgc);
//$text_color = imagecolorallocate ($im, 233, 14, 91);
//imagestring ($im, 1, 5, 5, "A Simple Text String", $text_color);
imagestring ($im, 1, 5, 5, "Error loading $imgname", $tc);
}
return $im;
}
exit;
?>
<html>
<head>
</head>
<body>
<?php
//$pic=ImageCreate(150,30);
$pic = imagecreatefrompng ("san3.png");
//$col1=ImageColorAllocate($pic,200,200,200);
$col2=ImageColorAllocate($pic,233,214,255);
$text_color = imagecolorallocate ($pic, 233, 14, 91);
imagestring ($pic, 1, 5, 5, "A Simple Text String", $text_color);
//ImageFilledRectangle($pic,1,1,100,100,$col2);
ImagePNG($pic,"pic.png");
ImageDestroy($pic);
?>
<img src="pic.png" border=0>
</body>
</html>
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Usage Example
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