<?php
require_once 'string.func.php';
$width = 80;
$height = 28;
$image = imagecreatetruecolor($width, $height);
$white = imagecolorallocate($image, 255, 255, 255);
$black = imagecolorallocate($image, 0, 0, 0);
imagefilledrectangle($image, 1, 1, $width-2, $height-2, $white);
$type = 1;
$length = 4;
$chars = builRandomString($type,$length);
$sess_name = "verify";
$_SESSION[$sess_name] = $chars;
$fontfiles = array("msyh.ttc","msyhbd.ttc","msyhl.ttc","simhei.ttf","simkai.ttf","simsun.ttc");
for($i=0;$length;$i++){
$size = mt_rand(14, 18);
$angle = mt_rand(-15, 15);
$x = 5 + $i * $size;
$y = mt_rand(20, 26);
$fontfile = "../fonts/".$fontfiles[mt_rand(0, count($fontfiles)-1)];
$color = imagecolorallocate($image, mt_rand(50, 90), mt_rand(80, 200), mt_rand(90, 180));
$text = substr($chars, $i,1);
imagettftext($image,$size,$angle,$x,$y,$color,$fontfile,$text);
}
header("conten-type:image/gif");
imagegif($image);
imagedestroy($image);