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<?php
session_start();
$im=imagecreate(58,24);
$black=imagecolorallocate($im,255,255,255);
$white=imagecolorallocate($im,0,0,0);
$grey=imagecolorallocate($im,126,0,125);
imagefill($im,0,0,$grey);
$num=rand(10000,99999);
imagestring($im,6,10,8,$num,$black);
for($i=0;$i<200;$i++) //加入干扰象素
{
$randcolor = ImageColorallocate($im,rand(0,255),rand(0,255),rand(0,255));
imagesetpixel($im, rand()%70 , rand()%30 , $randcolor);
}
header("content-type:image/png");
imagepng($im);
imagedestroy($im);
session_register('num');
?> |
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