欢迎您访问程序员文章站本站旨在为大家提供分享程序员计算机编程知识!
您现在的位置是: 首页  >  php教程

php实现的验证码文件类实例,

程序员文章站 2022-05-29 18:23:24
...

php实现的验证码文件类实例,

本文实例讲述了php实现的验证码文件类。分享给大家供大家参考。具体如下:

mCheckCode = strtoupper(substr(md5(rand()),0,$this->mCheckCodeNum));
  return $this->mCheckCode;
}
 
/**
*
* @brief  产生验证码图片
*
*/
private function CreateImage()
{
 $this->mCheckImage = @imagecreate ($this->mCheckImageWidth,$this->mCheckImageHeight);
 imagecolorallocate ($this->mCheckImage, 200, 200, 200);
  return $this->mCheckImage;
}
/**
*
* @brief  设置图片的干扰像素
*
*/
private function SetDisturbColor()
{
  for ($i=0;$imDisturbColor = imagecolorallocate ($this->mCheckImage, rand(0,255), rand(0,255), rand(0,255));
  imagesetpixel($this->mCheckImage,rand(2,128),rand(2,38),$this->mDisturbColor);
  }
}
/**
*
* @brief  设置验证码图片的大小
*
* @param  $width  宽
*
* @param  $height 高
*
*/
public function SetCheckImageWH($width,$height)
{
 if($width==''||$height=='')return false;
 $this->mCheckImageWidth = $width;
 $this->mCheckImageHeight = $height;
 return true;
}
/**
*
* @brief  在验证码图片上逐个画上验证码
*
*/
private function WriteCheckCodeToImage()
{
  for ($i=0;$imCheckCodeNum;$i++)
  {
  $bg_color = imagecolorallocate ($this->mCheckImage, rand(0,255), rand(0,128), rand(0,255));
  $x = floor($this->mCheckImageWidth/$this->mCheckCodeNum)*$i;
  $y = rand(0,$this->mCheckImageHeight-15);
  imagechar ($this->mCheckImage, 5, $x, $y, $this->mCheckCode[$i], $bg_color);
  }
}
/**
*
* @brief  输出验证码图片
*
*/
public function OutCheckImage()
{
 $this ->OutFileHeader();
 $this ->CreateCheckCode();
 $this ->CreateImage();
 $this ->SetDisturbColor();
 $this ->WriteCheckCodeToImage();
 imagepng($this->mCheckImage);
 imagedestroy($this->mCheckImage);
}
}
$c_check_code_image = new CCheckCodeFile();
//$c_check_code_image ->SetCheckImageWH(100,50);
//设置显示验证码图片的尺寸
$c_check_code_image ->OutCheckImage();
?>

希望本文所述对大家的php程序设计有所帮助。

相关标签: php 验证码