<?php
require_once 'string.func.php';
// 通过GD库做验证码
// 创建画布
$width = 80;
$height = 20;
$image = imagecreatetruecolor ( $width, $height );
$white = imagecolorallocate ( $image, 255, 255, 255 );
$black = imagecolorallocate ( $image, 0, 0, 0 );
// 用填充矩形填充画布
imagefilledrectangle ( $image, 1, 1, $width - 2, $height - 2, $white );
$type=1;
$length=4;
$chars=buildRandomString($type,$length);
$sess_name="verify";
$_SESSION[$sess_name]=$chars;
$fontfile=array("SIMLI.TTF","SIMSUN,TTC","SIMYOU.TTF","STHUPO.TTF","STXINGKA,TTF","STXINWEI.TTF");
for ($i=0;$i<$length;$i++){
$size=mt_rand(14,18);
$angle=mt_rand(-15, 15);
$x=5+$i*$size;
$y=mt_rand(20, 26);
$fontfile="../fonts/".$fontfile[mt_rand(0, count($fontfile)-1)];
$color=imagecolorallocate($image, mt_rand(50,90), mt_rand(80,200), mt_rand(90, 180));
$text=substr($chars, $i,1);
imangettftext($image,$size,$angle,$x,$y,$color,$fontfile,$text);
}
ob_clean();
header("content-type:image/gif");
imagegif($image);
imagedestroy($image);
?>
//浏览器不显示是怎么回事
kylebug
2014-09-21
2 回答
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