码迷,mamicode.com
首页 > Web开发 > 详细

PHP入门培训教程 一个漂亮的PHP验证码

时间:2016-10-11 11:00:12      阅读:148      评论:0      收藏:0      [点我收藏+]

标签:

 

 

如何写一个漂亮的PHP验证码?兄弟连PHP培训

小编分享一段代码给大家:

  <?php

  class Imagecode{

  private $width ;

  private $height;

  private $counts;

  private $distrubcode;

  private $fonturl;

  private $session;

  function __construct($width= 120,$height = 30,$counts =5,$distrubcode="1235467890qwertyuipkjhgfdaszxcvbnm",$fonturl="C:\Windows\Fonts\TektonPro-BoldCond.otf"){

  $this->width=$width;

  $this->height=$height;

  $this->counts=$counts;

  $this->distrubcode=$distrubcode;

  $this->fonturl=$fonturl;

  $this->session=$this->sessioncode();

  session_start();

  $_SESSION[‘code‘]=$this->session;

  }

  function imageout(){

  $im=$this->createimagesource();

  $this->setbackgroundcolor($im);

  $this->set_code($im);

  $this->setdistrubecode($im);

  ImageGIF($im);

  ImageDestroy($im);

  }

  private functioncreateimagesource(){

  returnimagecreate($this->width,$this->height);

  }

  private functionsetbackgroundcolor($im){

  $bgcolor = ImageColorAllocate($im,rand(200,255),rand(200,255),rand(200,255));//±³¾°ÑÕÉ«

  imagefill($im,0,0,$bgcolor);

  }

  private functionsetdistrubecode($im){

  $count_h=$this->height;

  $cou=floor($count_h*2);

  for($i=0;$i<$cou;$i++){

  $x=rand(0,$this->width);

  $y=rand(0,$this->height);

  $jiaodu=rand(0,360);

  $fontsize=rand(8,15);

  $fonturl=$this->fonturl;

  $originalcode =$this->distrubcode;

  $countdistrub =strlen($originalcode);

  $dscode =$originalcode[rand(0,$countdistrub-1)];

  $color = ImageColorAllocate($im,rand(40,140),rand(40,140),rand(40,140));

  imagettftext($im,$fontsize,$jiaodu,$x,$y,$color,$fonturl,$dscode);

  }

  }

  private functionset_code($im){

  $width=$this->width;

  $counts=$this->counts;

  $height=$this->height;

  $scode=$this->session;

  $y=floor($height/2)+floor($height/4);

  $fontsize=rand(30,35);

  $fonturl="C:\Windows\Fonts\AdobeGothicStd-Bold.otf";//$this->fonturl;

  $counts=$this->counts;

  for($i=0;$i<$counts;$i++){

  $char=$scode[$i];

  $x=floor($width/$counts)*$i+8;

  $jiaodu=rand(-20,30);

  $color =ImageColorAllocate($im,rand(0,50),rand(50,100),rand(100,140));

  imagettftext($im,$fontsize,$jiaodu,$x,$y,$color,$fonturl,$char);

  }

  }

  private functionsessioncode(){

  $originalcode =$this->distrubcode;

  $countdistrub =strlen($originalcode);

  $_dscode = "";

  $counts=$this->counts;

  for($j=0;$j<$counts;$j++){

  $dscode =$originalcode[rand(0,$countdistrub-1)];

  $_dscode.=$dscode;

  }

  return $_dscode;

  }

  }

  Header("Content-type:image/GIF");

  $imagecode=newImagecode(160,50);

  $imagecode->imageout();

 

PHP入门培训教程 一个漂亮的PHP验证码

标签:

原文地址:http://www.cnblogs.com/xdlltao/p/5948413.html

(0)
(0)
   
举报
评论 一句话评论(0
登录后才能评论!
© 2014 mamicode.com 版权所有  联系我们:gaon5@hotmail.com
迷上了代码!