php 图片中文验证码

php 图片中文验证码

<?php
session_start();

$vi = new vCodeImage;
$vi->SetImage(1,4,65,20,80,1);

class vCodeImage{
var $mode; //1：数字模式，2：字母模式，3：数字字母模式，其他：数字字母优化模式
var $v_num; //验证码个数
var $img_w; //验证码图像宽度
var $img_h; //验证码图像高度
var $int_pixel_num; //干扰像素个数
var $int_line_num; //干扰线条数
var $font_dir; //字体文件相对路径
var $border; //图像边框
var $borderColor; //图像边框颜色

function SetImage($made,$v_num,$img_w,$img_h,$int_pixel_num,$int_line_num,$font_dir='../font',$border=true,$borderColor='255,200,85'){
if(!isset($_SESSION['vCode'])){
session_register('vCode');
}
$_SESSION['vCode']="";

$this->mode = $made;
$this->v_num = $v_num;
$this->img_w = $img_w;
$this->img_h = $img_h;
$this->int_pixel_num = $int_pixel_num;
$this->int_line_num = $int_line_num;
$this->font_dir = $font_dir;
$this->border = $border;
$this->borderColor = $borderColor;
$this->GenerateImage();
}

$black = imagecolorallocate($im, 0,0,0);
$white = imagecolorallocate($im, 255,255,255);
$bgcolor = imagecolorallocate($im, 250,250,250);

imagefill($im,0,0,$bgcolor);

$fonts = ScanDir($this->font_dir);
$fmax = count($fonts) - 2;

$ychar = $this->GetChar($this->mode);
$list = explode(",",$ychar);

$x = mt_rand(2,$this->img_w/($this->v_num+2));
$cmax = count($list) - 1;

$v_code = '';

for($i=0;$i<$this->v_num;$i++) //验证码
{
   $randnum = mt_rand(0,$cmax);
   $this_char = $list[$randnum];
   $v_code .= $this_char;
   $size = mt_rand(intval($this->img_w/5),intval($this->img_w/4));
   $angle = mt_rand(-20,20);
   $y = mt_rand(($size+2),($this->img_h-2));
   if($this->border)
    $y = mt_rand(($size+3),($this->img_h-3));
   $rand_color = $this->RandColor(0,200,0,100,0,250);
   $randcolor = imagecolorallocate($im,$rand_color[0],$rand_color[1],$rand_color[2]);
   $fontrand = mt_rand(2, $fmax);
   $font = "$this->font_dir/".$fonts[$fontrand];
   imagettftext($im, $size, $angle, $x, $y, $randcolor, $font, $this_char);
   $x = $x + intval($this->img_w/($this->v_num+1));
}

for($i=0;$i<$this->int_pixel_num;$i++){//干扰像素
   $rand_color = $this->RandColor(50,250,0,250,50,250);
   $rand_color_pixel = imagecolorallocate($im,$rand_color[0],$rand_color[1],$rand_color[2]);
   imagesetpixel($im, mt_rand()%$this->img_w, mt_rand()%$this->img_h, $rand_color_pixel);
}

for($i=0;$i<$this->int_line_num;$i++){ //干扰线
   $rand_color = $this->RandColor(0,250,0,250,0,250);
   $rand_color_line = imagecolorallocate($im,$rand_color[0],$rand_color[1],$rand_color[2]);
   imageline($im, mt_rand(0,intval($this->img_w/3)), mt_rand(0,$this->img_h), mt_rand(intval($this->img_w - ($this->img_w/3)),$this->img_w), mt_rand(0,$this->img_h), $rand_color_line);
}

if($this->border) //画出边框
{
   if(preg_match("/^\d{1,3},\d{1,3},\d{1,3}$/",$this->borderColor)){
    $borderColor = explode(',',$this->borderColor);
   }
   $border_color_line = imagecolorallocate($im,$borderColor[0],$borderColor[1],$borderColor[2]);
   imageline($im, 0, 0, $this->img_w, 0, $border_color_line); //上横
   imageline($im, 0, 0, 0, $this->img_h, $border_color_line); //左竖
   imageline($im, 0, $this->img_h-1, $this->img_w, $this->img_h-1, $border_color_line); //下横
   imageline($im, $this->img_w-1, 0, $this->img_w-1, $this->img_h, $border_color_line); //右竖
}

imageantialias($im,true); //抗锯齿

$time = time();
$_SESSION['vCode'] = $v_code."|".$time; //把验证码和生成时间负值给$_SESSION[vCode]

//生成图像给浏览器
if (function_exists("imagegif")) {
      header ("Content-type: image/gif");
      imagegif($im);
}
elseif (function_exists("imagepng")) {
      header ("Content-type: image/png");
      imagepng($im);
}
elseif (function_exists("imagejpeg")) {
      header ("Content-type: image/jpeg");
      imagejpeg($im, "", 80);
}
elseif (function_exists("imagewbmp")) {
      header ("Content-type: image/vnd.wap.wbmp");
      imagewbmp($im);
}
else
      die("No Image Support On This Server !");

imagedestroy($im);
}
}
?>

补充：Php教程,图像处理

php 图片 中文验证码

php 图片中文验证码