|
本文实例为大家分享了PHP验证码类,利用对象来实现的验证码类,供大家参考,具体内容如下
code_len;$i++ ){
$code .= $this->code_str[mt_rand(0, strlen($this->code_str)-1)];
}
return $this->code = $code;
}
//输出图像
public function getImage(){
$w = $this->width;
$h = $this->height;
$bg_color = $this->bg_color;
$($w, $h);
$bg_color = imagecolorallocate($img,
hexdec(substr($bg_color, 1,2)), hexdec(substr($bg_color, 3,2)), hexdec(substr($bg_color, 5,2)));
imagefill($img, 0, 0, $bg_color);
$this->$img;
$this->create_font();
$this->create_pix();
$this->show_code();
}
//写入验证码
public function create_font(){
$this->create_code();
$color = $this->font_color;
$font_color = imagecolorallocate($this->img, hexdec(substr($color,1,2)), hexdec(substr($color, 3,2)), hexdec(substr($color,5,2)));
$x = $this->width/$this->code_len;
for( $i=0;$icode_len;$i++ ){
$txt_color = imagecolorallocate($this->img, mt_rand(0,100), mt_rand(0, 150), mt_rand(0, 200));
imagettftext($this->img, $this->font_size, mt_rand(-30, 30), $x*$i+mt_rand(3, 6), mt_rand($this->height/1.2, $this->height), $txt_color, $this->font , $this->code[$i]);
//imagestring($this->img, $this->font_size, $x*$i+mt_rand(3, 6),mt_rand(0, $this->height/4) , $this->code[$i], $font_color);
}
$this->font_color = $font_color;
}
//画干扰线
public function create_pix(){
$pix_color= $this->font_color;
for($i=0;$iimg, mt_rand(0, $this->width),mt_rand(0, $this->height), $pix_color);
}
for($j=0;$jimg, mt_rand(1, 2));
imageline($this->img, mt_rand(0, $this->width), mt_rand(0, $this->height), mt_rand(0, $this->width), mt_rand(0, $this->height), $pix_color);
}
}
//得到验证码
public function getCode(){
return strtoupper($this->code);
}
//输出验证码
private function show_code(){
header("Content-type:image/png");
imagepng($this->img);
imagedestroy($this->img);
}
}
效果图:

精彩专题分享:ASP.NET验证码大全 PHP验证码大全 java验证码大全
以上就是使用对象编写的验证码类的全部内容,希望对大家学习PHP程序设计有所帮助。
您可能感兴趣的文章:PHP验证码类代码( 最新修改,完全定制化! )一个漂亮的php验证码类(分享)一个经典的PHP验证码类分享PHP实现简单实用的验证码类非常实用的php验证码类PHP编写的图片验证码类文件分享一个简单安全的PHP验证码类 附调用方法一个简单安全的PHP验证码类、PHP验证码分享一个漂亮的php验证码类PHP验证码类ValidateCode解析一个实用的php验证码类
|
|