自己导入字体，可以按照自己的额需要随便修改。
字体建议是用粗的
- class Imagecode{
- private $width ;
- private $height;
- private $counts;
- private $distrubcode;
- private $fonturl;
- private $fonturlbg;
- private $session;
- /**
- * Enter description here...
- *
- * @param unknown_type $width 宽度
- * @param unknown_type $height 高度
- * @param unknown_type $counts 字符个数
- * @param unknown_type $distrubcode 随机字符范围
- * @param unknown_type $fonturl 严重码字体
- * @param unknown_type $fonturlbg 干扰字符字体
- */
- function __construct($width = 120,$height = 30,$counts = 5,$distrubcode="1235467890qwertyuipkjhgfdaszxcvbnm",$fonturl="msyhbd.ttf",$fonturlbg='f.ttf'){
- $this->width=$width;
- $this->height=$height;
- $this->counts=$counts;
- $this->distrubcode=$distrubcode;
- $this->fonturl=$fonturl;
- $this->fonturlbg=$fonturlbg ? $fonturlbg :$fonturl;//未设置干扰字体时使用
- $this->session=$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 function createimagesource(){
- return imagecreate($this->width,$this->height);
- }
- private function setbackgroundcolor($im){
- $bgcolor = ImageColorAllocate($im, rand(200,255),rand(200,255),rand(200,255));//±3?°??é?
- imagefill($im,0,0,$bgcolor);
- }
- private function setdistrubecode($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->fonturlbg;
- $originalcode = $this->distrubcode;
- $countdistrub = strlen($originalcode);
- $dscode = $originalcode[rand(0,$countdistrub-1)];
- $color = ImageColorAllocate($im, rand(40,140),rand(40,140),rand(40,140));//干扰文字颜色
- imagettftext($im,$fontsize,$jiaodu,$x,$y,$color,$fonturl,$dscode);
-
- }
- }
- private function set_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);
- $fonturl=$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(0,200),rand(50,200),rand(100,240));//文字颜色
- imagettftext($im,$fontsize,$jiaodu,$x,$y,$color,$fonturl,$char);
- }
-
-
-
- }
- private function sessioncode(){
- $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=new Imagecode(160,50);
- $imagecode->imageout();
|
