一个漂亮的PHP验证码

自己导入字体，可以按照自己的额需要随便修改。

2. class Imagecode{
3. private $width ;
4. private $height;
5. private $counts;
6. private $distrubcode;
7. private $fonturl;
8. private $session;
9. function __construct($width = 120,$height = 30,$counts = 5,$distrubcode="1235467890qwertyuipkjhgfdaszxcvbnm",$fonturl="C:\Windows\Fonts\TektonPro-BoldCond.otf"){
10. $this->width=$width;
11. $this->height=$height;
12. $this->counts=$counts;
13. $this->distrubcode=$distrubcode;
14. $this->fonturl=$fonturl;
15. $this->session=$this->sessioncode();
16. session_start();
17. $_SESSION['code']=$this->session;
18. }
20. function imageout(){
21. $im=$this->createimagesource();
22. $this->setbackgroundcolor($im);
23. $this->set_code($im);
24. $this->setdistrubecode($im);
25. ImageGIF($im);
26. ImageDestroy($im);
27. }
29. private function createimagesource(){
30. return imagecreate($this->width,$this->height);
31. }
32. private function setbackgroundcolor($im){
33. $bgcolor = ImageColorAllocate($im, rand(200,255),rand(200,255),rand(200,255));//±3?°??é?
34. imagefill($im,0,0,$bgcolor);
35. }
36. private function setdistrubecode($im){
37. $count_h=$this->height;
38. $cou=floor($count_h*2);
39. for($i=0;$i $x=rand(0,$this->width);
40. $y=rand(0,$this->height);
41. $jiaodu=rand(0,360);
42. $fontsize=rand(8,15);
43. $fonturl=$this->fonturl;
44. $originalcode = $this->distrubcode;
45. $countdistrub = strlen($originalcode);
46. $dscode = $originalcode[rand(0,$countdistrub-1)];
47. $color = ImageColorAllocate($im, rand(40,140),rand(40,140),rand(40,140));
48. imagettftext($im,$fontsize,$jiaodu,$x,$y,$color,$fonturl,$dscode);
50. }
51. }
52. private function set_code($im){
53. $width=$this->width;
54. $counts=$this->counts;
55. $height=$this->height;
56. $scode=$this->session;
57. $y=floor($height/2)+floor($height/4);
58. $fontsize=rand(30,35);
59. $fonturl="C:\Windows\Fonts\AdobeGothicStd-Bold.otf";//$this->fonturl;
61. $counts=$this->counts;
62. for($i=0;$i $char=$scode[$i];
63. $x=floor($width/$counts)*$i+8;
64. $jiaodu=rand(-20,30);
65. $color = ImageColorAllocate($im,rand(0,50),rand(50,100),rand(100,140));
66. imagettftext($im,$fontsize,$jiaodu,$x,$y,$color,$fonturl,$char);
67. }
71. }
72. private function sessioncode(){
73. $originalcode = $this->distrubcode;
74. $countdistrub = strlen($originalcode);
75. $_dscode = "";
76. $counts=$this->counts;
77. for($j=0;$j $dscode = $originalcode[rand(0,$countdistrub-1)];
78. $_dscode.=$dscode;
79. }
80. return $_dscode;
82. }
83. }
84. Header("Content-type: image/GIF");
85. $imagecode=new Imagecode(160,50);
86. $imagecode->imageout();

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验证码, PHP