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Jul 25, 2016 am 08:43 AM
  1. class ValidationCode
  2. {
  3. //屬性
  4. private $width;
  5. private $height;
  6. private $ codeNum;
  7. ??? $image;
  8. ??? $disturbColorNum; //干擾元素?cái)?shù)目
  9. private $checkCode;
  10. function __construct($width=80,$height=20,$codeNum=4)
  11. {
  12. $this->width=$width;
  13. $this->height=$height;
  14. $this->codeNum=$codeNum;
  15. $number=floor($width*$height/15);
  16. if($number> ;240-$codeNum)
  17. {
  18. $this->disturbColorNum=240-$codeNum;
  19. }else
  20. {
  21. $this->disturbColorNum=$number;
  22. }
  23. $this->checkCode=$this->createCheckcode();
  24. }
  25. function getCheckCode()
  26. {
  27. return $this->checkCode;
  28. }
  29. ??? ?? createImage(){
  30. $this->image=imagecreatetruecolor($this->width,$this->height);
  31. $backcolor=imagecolorallocate($this->image ,rand(225,255),rand(225,255),rand(255,255));
  32. imagefill($this->image,0,0,$backcolor);
  33. $border=imagecolorallocate($this-> image,0,0,0);
  34. imageRectangle($this->image,0,0,$this->width-1,$this->height-1,$border);
  35. }
  36. ??? ?? setDisturbColor(){
  37. for($i=0;$i<$this->disturbColorNum;$i ){
  38. $color=imagecolorallocate($this->image,rand (0,255),rand(0,255),rand(0,255));
  39. imagesetpixel($this->image,rand(1,$this->width-2),rand(1,$this-> height-2),$color);
  40. }
  41. for($i=0;$i<10;$i )
  42. {
  43. $color=imagecolorallocate($this->image, rand(0,255),rand(0,255),rand(0,255));
  44. imagearc($this->image,rand(-10,$this->width),rand(-10,$this-> ;height),rand(30,300),rand(20,300),55,44,$color);
  45. }
  46. }
  47. ??? ?? outputText($fontFace=""){
  48. for($ i=0;$i<$this->codeNum;$i )
  49. {
  50. $fontcolor=imagecolorallocate($this->image,rand(0,128),rand(0,128),rand(0,128) );
  51. if($fontFace=="")
  52. {
  53. $fontsize=rand(3,5);
  54. $x=floor($this->width/$this-> ;codeNum)*$i 5;
  55. $y=rand(0,$this->height-15);
  56. imagechar($this->image,$fontsize,$x,$y,$ this->checkCode{$i},$fontcolor);
  57. }
  58. else
  59. {
  60. $fontsize=rand(12,16);
  61. $x=floor(($this ->width-8)/$this->codeNum)*$i 8;
  62. $y=rand($fontsize,$this->height-8);
  63. imagettftext($this-> ;image,$fontsize,rand(-45,45),$x,$y,$fontcolor,$fontFace,$this->checkCode{$i});
  64. }
  65. }
  66. }
  68. ??? ?? createCheckCode(){
  69. $code="23456789abcdefghijkmnpqrstuvwrst";
  70. $str="";
  71. for($i=0;$i<$this->codeNum ;$i )
  72. {
  73. $char=$code{rand(0,strlen($code)-1)};
  74. $str.=$char;
  75. }
  76. $ ?? str;
  77. }
  78. ??? ?? outputImage()
  79. {
  80. if(imagetypes()&IMG_GIF)
  81. {
  82. header("Content-Type:image/gif");
  83. imagepng($this->image);
  84. }else if(imagetypes()&IMG_JPG)
  85. {
  86. header("Content-Type:image/jpeg");
  87. imagepng($this ->image);
  88. }else if(imagetypes()&IMG_PNG)
  89. {
  90. header("Content-Type:image/png");
  91. imagepng($this->image) ;
  92. }else if(imagetypes()&IMG_WBMP){
  93. header("Content-Type:image/vnd.wap.wbmp");
  94. imagepng($this->image);
  95. }else
  96. {
  97. die("PHP不支持圖文驗(yàn)證碼");
  98. }
  99. }
  100. //??過(guò)該方法向?yàn)g覽器輸?圖???
  101. function showImage($fontFace ="")
  102. {
  103. //創(chuàng)建圖image背景
  104. $this->createImage();
  105. //設(shè)置干擾元素
  106. $this->setDisturbColor();
  107. //向圖 Image中隨機(jī)畫(huà)???
  108. $this->outputText($fontFace);
  109. //輸ude圖image
  110. $this->outputImage();
  111. }
  113. function __destruct()
  114. {
  115. imagedestroy($this->image);
  116. }
  117. }
  118. function checklogin(){
  119. if(empty( $_POST['name']))
  120. die('??? ??? ??? ? ????.');
  121. if(empty($_POST['password']))
  122. die("????? ??? ? ????." ) ;
  123. if($_SESSION['code']!=$_POST['vertify'])
  124. die("???? ??? ???????.".$_SESSION['code']);
  126. $username=$_POST['name'];
  127. $password=md5($_POST['password']);
  128. //????? ??
  129. conndb($username,$password) ;
  130. }
  131. ?? conndb($name="",$ps=""){
  132. $conn=mysql_connect('localhost','root','123456');
  133. if( ! $conn) die("?????? ?? ??".mysql_error());
  134. mysql_select_db('5kan',$conn) ?? die('?????? ?? ??'.mysql_error());
  135. mysql_set_charset('utf8 ' ,$conn);
  136. $sql="??? ??='{$name}' ? ????='{$ps}'"? k_user?? ID ??;
  137. $result=mysql_query($sql) ?? ?? ( "SQL ? ??".mysql_error());
  138. if(mysql_num_rows($result)>0) die("??? ??");
  139. else die("??? ?? ?? ????? ???????.");
  140. mysql_close($conn);
  141. }
  142. session_start();
  143. if(!isset($_POST['randnum']))
  144. {
  145. $code=new ValidationCode(120, 20,4);
  146. $code->showImage("comicbd.ttf"); //???? ??
  147. $_SESSION['code']=$code->getCheckCode();//?? ????
  148. }
  149. else
  150. {
  151. checklogin();
  152. }
  154. ?>
?? ??

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