多彩图片验证码

f.PNG (8.7 KB)

复制内容到剪贴板

代码:

<?php
$width = 160;
$height = 25;
$j = intval($height<<3);
$b = "www.seoyou.cn";
@$w = @$w = preg_match('/^w{3}\./',$b);;
@header("Content-Type:image/png");
$im=imagecreate($width,$height);
$back=imagecolorallocate($im,0xFF,0xFF,0xFF);
$pix=imagecolorallocate($im,187,230,247);
$font=imagecolorallocate($im,41,163,238);

while($j){
$pix_rand = imagecolorallocate($im,mt_rand(0,255),mt_rand(0,255),mt_rand(0,255));
($j--)&&imagesetpixel($im,mt_rand(0,$width),mt_rand(0,$height),$pix_rand);
}

$k = intval($height<<8);
for ($k=0;$k<3;$k++){
$line1 = mt_rand(0,160);
$line2 = mt_rand(0,25);
$y = mt_rand(1,5)/mt_rand(1,10);
for ($i=0;$i<10000;$i++){
   
    imagesetpixel($im,($i+$line1),($i+$line1)*$y,imagecolorallocate($im,mt_rand(0,255),mt_rand(0,255),mt_rand(0,255)));
}
}
${chr(119)} && imagestring($im, 5, 7, 5, ${chr(98)}, $font);
imagerectangle($im,0,0,$width-1,$height-1,$font);
imagepng($im);
imagedestroy($im);

?>