verification_img.php

hudong维客系统

<?php 
Header("Content-type: image/gif");  
session_start();
while(($verification=rand()%100000)<10000);
$_SESSION['verification'] = $verification;
$im = imagecreate(62,20); 
$black = ImageColorAllocate($im, 0,0,0); 
$white = ImageColorAllocate($im, 255,255,255); 
$gray = ImageColorAllocate($im, 200,200,200); 

imagefill($im,68,30,$black);
imagestring($im, 5, 10, 3, $verification, $white); 
for($i=0;$i<200;$i++)
{ 
    $randcolor = ImageColorallocate($im,rand(0,255),rand(0,255),rand(0,255));
    imagesetpixel($im, rand()%70 , rand()%30 , $randcolor); 
} 
Imagegif($im); 
ImageDestroy($im); 

?>