php绘制验证码.docVIP

//PHP生成验证码 002 // by MoreWindows( /MoreWindows ) 003 class CSecurity_verify 004 { 005 private $m_image; 006 private $m_dir_name; 007 private $m_image_width; 008 private $m_image_height; 009 private $m_digit_num; 010 private $m_letter_num; 011 private $m_font_color; 012 const NOISE_DOT_NUM = 100; //干扰点个数 013 const NOISE_LINE_NUM = 40; //干扰线个数 014 015 /* 016 * $dir_name 保存验证码图片的文件夹目录(绝对路径) 017 * $digit_num 数字个数 018 * $letter_num 字母个数 019 * $width 验证码图片宽 020 * $height 验证码图片高 021 */ 022 public function __construct($dir_name, $digit_num, $letter_num, $width = 140,$height = 40) 023 { 024 $this-m_dir_name = $dir_name; 025 $this-m_digit_num = $digit_num; 026 $this-m_letter_num = $letter_num; 027 $this-m_image_width = $width; 028 $this-m_image_height = $height; 029 } 030 031 /* 032 * 在指定目录上生成指定条件的验证码图片 033 * $verify_pic_num 要生成多少张验证码图片 034 */ 035 public function BatchVerifyPicture($verify_pic_num) 036 { 037 while ($verify_pic_num = 0) 038 { 039 $verify_pic_num--; 040 self::CreateVerifyImage(); 041 self::DrawNoiseDot(); 042 self::DrawNoiseLine(); 043 $verify_text = self::GetVerifyText(); 044 $filesize = self::DrawVerifyImage($verify_text); 045 if ($filesize != -1) 046 echo $verify_text . .png生成成功，大小 . $filesize . 字节 047 ; 048 else 049 echo $verify_text . .png生成失败 050 ; 051 } 052 } 053 054 /* 055 * 创建图片 056 */ 057 protected function CreateVerifyImage() 058 { 059 $this-m_image = imagecreatetruecolor($this-m_image_width, $this-m_image_height) or die(CreateVerifyImage failde); 060 $black_color = imagecolorallocate($this-m_image, 243, 251, 254); 061 imagefill($th