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<?php
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class Imagecode{
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private $width ;
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private $height;
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private $counts;
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private $distrubcode;
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private $fonturl;
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private $session;
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function __construct($width = 120,$height = 30,$counts = 5,$distrubcode="1235467890qwertyuipkjhgfdaszxcvbnm",$fonturl="C:\Windows\Fonts\TektonPro-BoldCond.otf"){
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$this->width=$width;
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$this->height=$height;
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$this->counts=$counts;
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$this->distrubcode=$distrubcode;
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$this->fonturl=$fonturl;
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$this->session=$this->sessioncode();
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session_start();
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$_SESSION[‘code‘]=$this->session;
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}
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function imageout(){
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$im=$this->createimagesource();
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$this->setbackgroundcolor($im);
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$this->set_code($im);
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$this->setdistrubecode($im);
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ImageGIF($im);
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ImageDestroy($im);
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}
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private function createimagesource(){
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return imagecreate($this->width,$this->height);
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}
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private function setbackgroundcolor($im){
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$bgcolor = ImageColorAllocate($im, rand(200,255),rand(200,255),rand(200,255));//±3?°??é?
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imagefill($im,0,0,$bgcolor);
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}
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private function setdistrubecode($im){
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$count_h=$this->height;
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$cou=floor($count_h*2);
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for($i=0;$i<$cou;$i++){
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$x=rand(0,$this->width);
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$y=rand(0,$this->height);
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$jiaodu=rand(0,360);
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$fontsize=rand(8,15);
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$fonturl=$this->fonturl;
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$originalcode = $this->distrubcode;
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$countdistrub = strlen($originalcode);
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$dscode = $originalcode[rand(0,$countdistrub-1)];
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$color = ImageColorAllocate($im, rand(40,140),rand(40,140),rand(40,140));
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imagettftext($im,$fontsize,$jiaodu,$x,$y,$color,$fonturl,$dscode);
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}
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}
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private function set_code($im){
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$width=$this->width;
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$counts=$this->counts;
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$height=$this->height;
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$scode=$this->session;
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$y=floor($height/2)+floor($height/4);
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$fontsize=rand(30,35);
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$fonturl="C:\Windows\Fonts\AdobeGothicStd-Bold.otf";//$this->fonturl;
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$counts=$this->counts;
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for($i=0;$i<$counts;$i++){
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$char=$scode[$i];
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$x=floor($width/$counts)*$i+8;
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$jiaodu=rand(-20,30);
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$color = ImageColorAllocate($im,rand(0,50),rand(50,100),rand(100,140));
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imagettftext($im,$fontsize,$jiaodu,$x,$y,$color,$fonturl,$char);
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}
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}
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private function sessioncode(){
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$originalcode = $this->distrubcode;
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$countdistrub = strlen($originalcode);
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$_dscode = "";
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$counts=$this->counts;
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for($j=0;$j<$counts;$j++){
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$dscode = $originalcode[rand(0,$countdistrub-1)];
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$_dscode.=$dscode;
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}
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return $_dscode;
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}
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}
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Header("Content-type: image/GIF");
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$imagecode=new Imagecode(160,50);
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$imagecode->imageout();
