Файл: mob-lave.ru/captcha.php
Строк: 23
<?
$width = 97;
$height = 30;
$sign = 5;
$code = "";
session_start();
$letters = array( 'a','b','c','d','e','f',
'g','h','j','k','m','n',
'p','q','r','s','t','u',
'v','w','x','y','z','2',
'3','4','5','6','7','8','9' );
$figures = array( '50','70','90','110',
'130','150','170','190','210' );
$img = imagecreatetruecolor($width, $height);
$fon = imagecolorallocate($img, 255, 255, 255);
imagefill($img, 0, 0, $fon);
for($i=0; $i<$sign; $i++)
{
$h = 1;
$color = imagecolorallocatealpha(
$img,
$figures[rand(0, count($figures)-1)],
$figures[rand(0, count($figures)-1)],
$figures[rand(0, count($figures)-1)],
rand( 10, 30 ) );
$letter = $letters[rand( 0,sizeof($letters)-1 )];
if( empty( $x ) ) $x = $width*0.08;
else $x = $x + ( $width*0.8 )/$sign+rand( 0,$width*0.01 );
if( $h == rand( 1, 2 ) ) $y = ( ( $height*1 )/4 ) + rand( 0, $height*0.1 );
else $y = ( ( $height*1 )/4 ) - rand( 0, $height*0.1 );
$code.= $letter;
imagestring( $img, 6 ,$x, $y, $letter, $color );
}
$_SESSION['code'] = $code;
header ( "Content-type: image/jpeg" );
imagejpeg( $img );
?>