www.gusucode.com > PHP展示型企业网站模板米拓整站源码 1.0PHP源码程序 > PHP展示型企业网站模板米拓整站源码 1.0/MetInfozs_v1.0/MetInfozs_v1.0/app/system/include/class/pin.class.php
<?php # MetInfo Enterprise Content Management System # Copyright (C) MetInfo Co.,Ltd (http://www.metinfo.cn). All rights reserved. defined('IN_MET') or exit('No permission'); load::sys_func('common'); class pin { public function check_pin($pin){ global $_M; $authpin = $this->getpin(); if($authpin && $authpin == strtoupper($pin)){ $this->setpin($this->make_rand(4)); return true; }else{ return false; } } public function create_pin(){ $this->getAuthImage($this->make_rand(4)); } function getAuthImage($text) { $this->setpin($text); $im_x = 160; $im_y = 40; $im = imagecreatetruecolor($im_x,$im_y); $text_c = ImageColorAllocate($im, mt_rand(0,100),mt_rand(0,100),mt_rand(0,100)); $tmpC0=mt_rand(100,255); $tmpC1=mt_rand(100,255); $tmpC2=mt_rand(100,255); $buttum_c = ImageColorAllocate($im,$tmpC0,$tmpC1,$tmpC2); imagefill($im, 16, 13, $buttum_c); $font = PATH_SYS_PUBLIC.'font-awesome/fonts/verdana.ttf'; for ($i=0;$i<strlen($text);$i++) { $tmp =substr($text,$i,1); $array = array(-1,1); $p = array_rand($array); $an = $array[$p]*mt_rand(1,10);//角度 $size = 28; imagettftext($im, $size, $an, 15+$i*$size, 35, $text_c, $font, $tmp); } $distortion_im = imagecreatetruecolor ($im_x, $im_y); imagefill($distortion_im, 16, 13, $buttum_c); for ( $i=0; $i<$im_x; $i++) { for ( $j=0; $j<$im_y; $j++) { $rgb = imagecolorat($im, $i , $j); if( (int)($i+20+sin($j/$im_y*2*M_PI)*10) <= imagesx($distortion_im)&& (int)($i+20+sin($j/$im_y*2*M_PI)*10) >=0 ) { imagesetpixel ($distortion_im, (int)($i+10+sin($j/$im_y*2*M_PI-M_PI*0.1)*4) , $j , $rgb); } } } //加入干扰象素; $count = 160;//干扰像素的数量 for($i=0; $i<$count; $i++){ $randcolor = ImageColorallocate($distortion_im,mt_rand(0,255),mt_rand(0,255),mt_rand(0,255)); imagesetpixel($distortion_im, mt_rand()%$im_x , mt_rand()%$im_y , $randcolor); } $rand = mt_rand(5,30); $rand1 = mt_rand(15,25); $rand2 = mt_rand(5,10); for ($yy=$rand; $yy<=+$rand+2; $yy++){ for ($px=-80;$px<=80;$px=$px+0.1) { $x=$px/$rand1; if ($x!=0) { $y=sin($x); } $py=$y*$rand2; imagesetpixel($distortion_im, $px+80, $py+$yy, $text_c); } } //设置文件头; Header("Content-type: image/JPEG"); //以PNG格式将图像输出到浏览器或文件; ImagePNG($distortion_im); //销毁一图像,释放与image关联的内存; ImageDestroy($distortion_im); ImageDestroy($im); } function make_rand($length="32"){//验证码文字生成函数 $str="A2B3C4D5E6F7G8H9iJKLMNPQRSTUVWXYZ"; $result=""; for($i=0;$i<$length;$i++){ $num[$i]=mt_rand(0,25); $result.=$str[$num[$i]]; } return $result; } function setpin($str){ load::sys_class('session', 'new')->set('pin', $str); } function getpin(){ return load::sys_class('session', 'new')->get('pin'); } } # This program is an open source system, commercial use, please consciously to purchase commercial license. # Copyright (C) MetInfo Co., Ltd. (http://www.metinfo.cn). All rights reserved. ?>