网站建设最快多长时间,wordpress制作表单,国外网站参考,哪些网站可以兼职做设计本文实例讲述了php实现的验证码文件类。分享给大家供大家参考。具体如下#xff1a;/*** file* version 1.0* author 网海浪子* brief 验证码文件类**/class ccheckcodefile{//验证码位数private $mcheckcodenum 4;//产生的验证码private $mcheckcode ;//验证码的图片privat…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/*** file* version 1.0* author 网海浪子* brief 验证码文件类**/class ccheckcodefile{//验证码位数private $mcheckcodenum 4;//产生的验证码private $mcheckcode ;//验证码的图片private $mcheckimage ;//干扰像素private $mdisturbcolor ;//验证码的图片宽度private $mcheckimagewidth 80;//验证码的图片宽度private $mcheckimageheight 20;/**** brief 输出头**/private function outfileheader(){header (content-type: image/png);}/**** brief 产生验证码**/private function createcheckcode(){$this-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 $this-mcheckimage;}/**** brief 设置图片的干扰像素**/private function setdisturbcolor(){for ($i0;$i128;$i){$this-mdisturbcolor imagecolorallocate ($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 $height;return true;}/**** brief 在验证码图片上逐个画上验证码**/private function writecheckcodetoimage(){for ($i0;$i$this-mcheckcodenum;$i){$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。如您对本文有疑问或者有任何想说的请点击进行留言回复万千网友为您解惑
