$size = $width / $len;
if ($size > $height) {
$size = $height;
}
$left = ($width - $len * ($size + $size / 10)) / $size;
for ($i = 0; $i < $len; $i++) {
$randtext = rand(0, 9);
$code .= $randtext;
$textColor = imageColorAllocate($image, rand(0, 100), rand(0, 100), rand(0, 100));
$font = rand(1, 4) . ".ttf";
$randsize = rand($size - $size / 10, $size + $size / 10);
$location = $left + ($i * $size + $size / 10);
imagettftext($image, $randsize, rand(-18, 18), $location, rand($size - $size / 10, $size + $size / 10), $textColor, $font, $randtext);
}
if ($noise == true) {
setnoise();
}
$_SESSION['cv_yzm'] = $code;
$bordercolor = getcolor($bordercolor);
if ($border == true) {
imageRectangle($image, 0, 0, $width - 1, $height - 1, $bordercolor);
}
header("Content-type: image/png");
imagePng($image);
imagedestroy($image);
function getcolor($color)
{
global $image;
$color = eregi_replace("^#", "", $color);
$r = $color[0] . $color[1];
$r = hexdec($r);
$image = imageCreate($width, $height);
$back = imagecolorallocate($image, mt_rand(150, 255), mt_rand(150, 255), mt_rand(150, 255));
imageFilledRectangle($image, 0, 0, $width, $height, $back);
$size = $width / $len;
if ($size > $height) {
$size = $height;
}
$left = ($width - $len * ($size + $size / 10)) / $size;
$textall = range('A', 'Z');
for ($i = 0; $i < $len; $i++) {
$tmptext = rand(0, 25);
$randtext = $textall[$tmptext];
$code .= $randtext;
}
if ($noise == true) {
setnoise($image, $width, $height, $back, $noisenum);
}
for ($i = 0; $i < strlen($code); $i++) {
imageString($image, 5, $i * $width / 4 + mt_rand(1, 5), $height / 4, $code[$i], imageColorAllocate($image, mt_rand(0, 150), mt_rand(0, 150), mt_rand(0, 150)));
}
$_SESSION['ShopNC_app_seccode'] = $code;
@header("Content-type: image/png");
imagePng($image);
imagedestroy($image);
function setnoise($image, $width, $height, $back, $noisenum)
{
for ($i = 0; $i < $noisenum; $i++) {
$randColor = imageColorAllocate($image, rand(0, 255), rand(0, 255), rand(0, 255));
imageSetPixel($image, rand(0, $width), rand(0, $height), $randColor);
}
}
