Maison >développement back-end >tutoriel php >一个漂亮的PHP验证码

一个漂亮的PHP验证码

WBOY
WBOYoriginal
2016-07-25 08:46:341209parcourir
自己导入字体,可以按照自己的额需要随便修改。
一个漂亮的PHP验证码
  1. class Imagecode{
  2. private $width ;
  3. private $height;
  4. private $counts;
  5. private $distrubcode;
  6. private $fonturl;
  7. private $session;
  8. function __construct($width = 120,$height = 30,$counts = 5,$distrubcode="1235467890qwertyuipkjhgfdaszxcvbnm",$fonturl="C:\Windows\Fonts\TektonPro-BoldCond.otf"){
  9. $this->width=$width;
  10. $this->height=$height;
  11. $this->counts=$counts;
  12. $this->distrubcode=$distrubcode;
  13. $this->fonturl=$fonturl;
  14. $this->session=$this->sessioncode();
  15. session_start();
  16. $_SESSION['code']=$this->session;
  17. }
  18. function imageout(){
  19. $im=$this->createimagesource();
  20. $this->setbackgroundcolor($im);
  21. $this->set_code($im);
  22. $this->setdistrubecode($im);
  23. ImageGIF($im);
  24. ImageDestroy($im);
  25. }
  26. private function createimagesource(){
  27. return imagecreate($this->width,$this->height);
  28. }
  29. private function setbackgroundcolor($im){
  30. $bgcolor = ImageColorAllocate($im, rand(200,255),rand(200,255),rand(200,255));//±3?°??é?
  31. imagefill($im,0,0,$bgcolor);
  32. }
  33. private function setdistrubecode($im){
  34. $count_h=$this->height;
  35. $cou=floor($count_h*2);
  36. for($i=0;$i $x=rand(0,$this->width);
  37. $y=rand(0,$this->height);
  38. $jiaodu=rand(0,360);
  39. $fontsize=rand(8,15);
  40. $fonturl=$this->fonturl;
  41. $originalcode = $this->distrubcode;
  42. $countdistrub = strlen($originalcode);
  43. $dscode = $originalcode[rand(0,$countdistrub-1)];
  44. $color = ImageColorAllocate($im, rand(40,140),rand(40,140),rand(40,140));
  45. imagettftext($im,$fontsize,$jiaodu,$x,$y,$color,$fonturl,$dscode);
  46. }
  47. }
  48. private function set_code($im){
  49. $width=$this->width;
  50. $counts=$this->counts;
  51. $height=$this->height;
  52. $scode=$this->session;
  53. $y=floor($height/2)+floor($height/4);
  54. $fontsize=rand(30,35);
  55. $fonturl="C:\Windows\Fonts\AdobeGothicStd-Bold.otf";//$this->fonturl;
  56. $counts=$this->counts;
  57. for($i=0;$i $char=$scode[$i];
  58. $x=floor($width/$counts)*$i+8;
  59. $jiaodu=rand(-20,30);
  60. $color = ImageColorAllocate($im,rand(0,50),rand(50,100),rand(100,140));
  61. imagettftext($im,$fontsize,$jiaodu,$x,$y,$color,$fonturl,$char);
  62. }
  63. }
  64. private function sessioncode(){
  65. $originalcode = $this->distrubcode;
  66. $countdistrub = strlen($originalcode);
  67. $_dscode = "";
  68. $counts=$this->counts;
  69. for($j=0;$j $dscode = $originalcode[rand(0,$countdistrub-1)];
  70. $_dscode.=$dscode;
  71. }
  72. return $_dscode;
  73. }
  74. }
  75. Header("Content-type: image/GIF");
  76. $imagecode=new Imagecode(160,50);
  77. $imagecode->imageout();
复制代码

验证码, PHP


Déclaration:
Le contenu de cet article est volontairement contribué par les internautes et les droits d'auteur appartiennent à l'auteur original. Ce site n'assume aucune responsabilité légale correspondante. Si vous trouvez un contenu suspecté de plagiat ou de contrefaçon, veuillez contacter admin@php.cn