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<?php
();
?>
<form name="form1" method="post" action="form.php">
<?php
if(isset( $_REQUEST [ 'Submit' ])){
$key = substr ( $_SESSION [ 'key' ], 0 , 5 );
$number = $_REQUEST [ 'number' ];
$number != $key ){
' Validation string not valid! Please try again!' ;}
' Thank You for the verification!' ;}
?>
</div>
<?php
();
$md5 = md5 ( microtime () * mktime ());
$string = substr ( $md5 , 0 , 5 );
//echo $string;
$image = imagecreatefromjpeg ( "images/box5" );
$black = imagecolorallocate ( $image , 0 , 0 , 0 );
$line = imagecolorallocate ( $image , 233 , 239 , 239 );
$line2 = imagecolorallocate ( $image , 153 , 165 , 123 );
imageline ( $image , 10 , 1 , 30 , 25 , $line2 );
imageline ( $image , 1 , 60 , 40 , 10 , $line2 );
imageline ( $image , 5 , 8 , 20 , 20 , $line2 );
imageline ( $image , 6 , 40 , 20 , 15 , $line2 );
$i = 0 ; $i <= 256 ; $i ++) {
$point_color = imagecolorallocate ( $image , rand ( 0 , 255 ), rand ( 0 , 255 ), rand ( 0 , 255 ));
imagesetpixel ( $image , rand ( 6 , 128 ), rand ( 2 , 38 ), $point_color );
$str_array =array();
$len = strlen ( $string );
$i = 0 ; $i < $len ; $i ++) $str_array []= $string { $i };
imagestring ( $image , 5 , rand ( 2 , 10 ), rand ( 2 , 11 ), $str_array [ 0 ], $black ); // Draw a random string horizontally
imagestring ( $image , 5 , rand ( 18 , 25 ), rand ( 2 , 11 ), $str_array [ 1 ], $black ); // Draw a random string horizontally
imagestring ( $image , 5 , rand ( 33 , 40 ), rand ( 2 , 11 ), $str_array [ 2 ], $black ); // Draw a random string horizontally
imagestring ( $image , 5 , rand ( 47 , 55 ), rand ( 2 , 11 ), $str_array [ 3 ], $black ); // Draw a random string horizontally
imagestring ( $image , 5 , rand ( 61 , 68 ), rand ( 2 , 11 ), $str_array [ 4 ], $black ); // Draw a random string horizontally
$_SESSION [ 'key' ] = $string ;
header ( "Content-type: image/jpeg" );
imagejpeg ( $image );
?>
A damaged image generator (class) for validating text.
CAPTCHA - Completely Automated Public Turing test to tell Computers and Humans Apart Categories : PHP , PHP Classes , Security , GD image library , Security A captcha image allows you to prevent spam posting when users reload the page and stop bots from submitting forms automatically. This version allows you to use your own fonts (.ttf) to show the text.
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Bruce Borner wrote : 1690
img src="http://192.168.0.6/workbench/lekha/test/captcha.php"></
Bruce Borner wrote : 1691
="http://192.168.0.6/workbench/lekha/test/captcha.php"></
