-
-
$(".login").live('click',function(){
- var username=$(".input_user ").val();
- var password=$(".input_ps").val();
- var code=$('.input_checkcode').val();
- if(username= =""){
- alert("使用者名稱不能為空");
- return false;
- }
- if(password==""){
- alert("密碼不能為空");
- return false;
- }
var URL="checkLogin.php?";
- var DATA="&username="+username+"&password=" +password+"&code="+code;
- $.getJSON(URL+DATA,function(json){
- if(json.code=='code_error'){
- alert('驗證碼錯誤,請重新輸入驗證碼');
- }
- if(json.username=='true_u'&&json.password=='true_p'){
- //alert(json.username+"|"+username+ '...1');
- window.location="index.php";
- }
- if(json.username=='error_u'||json.password=='error_p'){
- alert("使用者名稱輸入或密碼輸入錯誤,請檢查後重新登陸!");
- window.location="login.php";
- }
- });
- });
-
-
複製程式碼
後台checkLogin.php關鍵程式碼:
-
- $code=$_GET['code'];
- if($code!=$_SESSION['captchaCode']['content'] )
- {$adminInfo['code']='code_error';};
-
- if($row['username']==$username&&$row['password']==$password) {
-
- $_SESSION['username']=$row['username'];
- $adminInfo['username']='true_u';
- $adminInfo['password']=' true_p';
- mysql_close();
- }else
- if($row['username']!=$username){
- $adminInfo['username']='error_u';
- }
- if($row['password']!=$password){
- $adminInfo['password']='error_p';
- }
-
- //var_dump($ adminInfo);exit;
- echo json_encode($adminInfo);
-
複製程式碼
具體如下:
checkCode.class.php//驗證碼
-
-
/*
- * Captcha Class base on PHP GD Lib
- * @author Design
- * @version 1.0
- * @copyright js8.in 2010 bbs.it-home.org
- * @demo
- * include('captchaClass.php');
- * $captchaDemo=new Captcha();
- ** $captchaDemo->createImage();
- */
- class Captcha{
- //@定義驗證碼圖片高度
- private $height;
- //@定義驗證碼圖片寬度 private $width;
- //@定義驗證碼字元數
- private $textNum;
- //@定義驗證碼字元內容
- private $textContent;
- //@定義字元顏色
- private $fontColor;
- //@定義隨機出的文字顏色
- private $randFontColor;
- //@定義字體大小
- private $fontSize;
- //@定義字體大小
- private $fontSize;
- //@定義字體大小
- private $fontSize;
- //@定義字體大小
- private $fontSize;
- //@定義字體大小
- private $fontSize;
- //@定義字體大小
- private $fontSize;
- //@定義字體大小
- private $fontSize;
- //@定義字體大小
- private $fontSize;
- //@定義字體大小
- private $fontSize;
- //@定義字型字體
- private $fontFamily;
- //@定義背景顏色
- private $bgColor;
- //@定義隨機出的背景顏色
- private $randBgColor; //@定義字符語言
- private $textLang;
- //@定義干擾點數量
- private $noisePoint;
- //@定義干擾線數量
- private $noiseLine;
- //@定義是否扭曲
- private $distortion;
- //@定義扭曲圖片來源
- private $distortionImage;
- //@定義是否有邊框
- private $showBorder; //@定義是否有邊框
- private $showBorder; //@定義是否有邊框
- // 定義驗證碼圖片來源
- private $image;
-
- //@Constructor 建構子
- public function Captcha(){
- $this->textNum=4;
- $this-> fontSize=16;
- $this->fontFamily='c:\windows\fontsSIMYOU.ttf';//設定中文字體,可以改成linux的目錄
- $this->textLang='en';
- $this->noisePoint=30;
- $this->noiseLine=3;
- $this->distortion=false;
- $this->showBorder=false;
- }
-
- //@設定圖片寬度
- public function setWidth($w){
- $this->width=$w;
- }
-
- //@設定圖片高度
- public function setHeight($h){
- $this->height=$h;
- }
-
- //@設定字元數
- public function setTextNumber($textN){
- $this->textNum=$textN;
- }
-
- //@設定字元顏色
- public function setFontColor($fc){
- $this->fontColor=sscanf($ fc,'#%2x%2x%2x');
- }
-
- //@設定字號
- public function setFontSize($n){
- $this->fontSize=$n ;
- }
-
- //@設定字體
- public function setFontFamily($ffUrl){
- $this->fontFamily=$ffUrl;
- }
-
-
- / /@設定字元語言
- public function setTextLang($lang){
- $this->textLang=$lang;
- }
-
- //@設定圖片背景
- public function setBgColoror ($bc){
- $this->bgColor=sscanf($bc,'#%2x%2x%2x');
- }
-
- //@設定乾擾點數量
- public function setNoisePoint($n){
- $this->noisePoint=$n;
- }
-
- //@設定幹擾線數
- public function setNoiseLine($n){
- $this->noiseLine=$n;
- }
-
- //@設定是否扭曲
- public function setDistortion($b){
- $this->distortion=$b;
- }
-
- //@設定是否顯示邊框
- public function setShowBorder($border){
- $this->showBorder=$border;
- }
-
- / /@初始化驗證碼圖片
- public function initImage(){
- if(empty($this->width)){$this->width=floor($this->fontSize*1.3)*$this- >textNum+10;}
- if(empty($this->height)){$this->height=$this->fontSize*2;}
- $this->image=imagecreatetruecolor($this- >width,$this->height);
- if(empty($this->bgColor)){
- $this->randBgColor=imagecolorallocate($this->image,mt_rand(100,255),mt_rand(100,255 ),mt_rand(100,255));
- }else{
- $this->randBgColor=imagecolorallocate($this->image,$this->bgColor[0],$this->bgColor[1],$ this->bgColor[2]);
- }
- imagefill($this->image,0,0,$this->randBgColor);
- }
-
- //@產生隨機字元
- public function randText($type){
- $string='';
- switch($type){
- case 'en':
- $str='ABCDEFGHJKLMNPQRSTUVWW3456789' > for($i=0;$itextNum;$i++){
- $string=$string.','.$str[mt_rand(0,29)];
- }
- break;
- case 'cn':
- for($i=0;$itextNum;$i++) {
- $string=$string.','.chr( rand(0xB0,0xCC)).chr(rand(0xA1,0xBB));
- } $string=iconv('GB2312','UTF-8',$string); //轉換編碼到utf8 break; } return substr($string,1); } //@輸出文字到驗證碼 public function createText(){ $textArray=explode(',',$this->randText($this->textLang)); $this->textContent=join('',$textArray); if(empty($ this->fontColor)){ $this->randFontColor=imagecolorallocate($this->image,mt_rand(0,100),mt_rand(0,100),mt_rand(0,100)); }else{ $ this->randFontColor=imagecolorallocate($this->image,$this->fontColor[0],$this->fontColor[1],$this->fontColor[2]); }
- for($i=0;$itextNum;$i++){
- $angle=mt_rand(-1,1)*mt_rand(1,20);
- imagettftext( $ this->圖片,$this->fontSize,$angle,5+$i*floor($this->fontSize*1.3),floor($this->height*0.75),$this-> ;randFontColor,$this ->fontFamily,$textArray[$i]);
- }
- }
-
- //@產生幹擾點
- public function createNoisePoint(){
- for($i=0 ;$inoisePoint;$i++){
- $pointColor=imagecolorallocate($this->image,mt_rand(0,255),mt_rand(0,255),mt_rand(0,255) );
- $imagesetpixel($ this->圖片,mt_rand(0,$this->寬度),mt_rand(0,$this->高度),$pointColor);
- }
-
- }
-
- // @產生幹擾線
- public function createNoiseLine(){
- for($i=0;$inoiseLine;$i++) {
- $lineColor=imagecolorallocate($this->image, mt_rand(0,255),mt_rand(0,255),20);
- imageline($this->image,0,mt_rand(0,$this->width) ),$this->width,mt_rand(0,$this ->height),$lineColor);
- }
- }
-
- //@扭曲文字
- public function DistortionText (){
- $this-> DistortionImage=imagecreatetruecolor($imagecreatetruecolor($ ->寬度,$this->高度);
- imagefill($this-> DistortionImage,0,0,$this-> ;randBgColor);
- for($x=0;$x 寬度;$x++){
- for($y=0;$y高度;$y++ ){
- $rgbColor=imagecolorat($this->映像,$x,$y) ;
- imagesetpixel($this-> DistortionImage,(int)($x+sin($y/$this) ->高度*2*M_PI-M_PI*0.5)*3),$y,$rgbColor);
- }
- }
- $this->image=$this-> DistortionImage;
- }
-
- //@產生驗證碼圖片
- public function createImage(){
- $this->initImage(); //建立基本圖片
- $this->createText(); // 輸出驗證碼字元
- if($this-> Distortion){$this-> DistortionText();} //扭曲文字
- $this->createNoisePoint(); //產生幹擾點
- $this->createNoiseLine(); //產生幹擾線
- if($this->showBorder){imagerectangle($this->image,0,0,$this->width-1,$this->height-1,$this->randFontColor );} //加上眉毛
- imagepng($this->image);
- imagedestroy($this->image);
- if($this-> Distortion) {imagedestroy($this->$ DistortionImage);}
- return $this->textContent;
- }
- }
- ?>
- code.php//新建一個對象,負責圖片的創建以及驗證碼文字寫入會話
-
session_start();
- header("Content-type:image/png");
- include('checkCode.class .php');
- $captcha5=new Captcha();
-
- //@設定驗證碼寬度
- //$captcha5->setWidth(200);
-
- //@設定驗證碼高度
- //$ captcha5->setHeight(50);
-
- //@設定字元個數
- $captcha5->setTextNumber(4);
-
- //@設定字元顏色
- // $captcha5->setFontColor('#ffffff');
-
- //@設定字號大小
- //$captcha5->setFontColor('#ffffff');
-
- //@@設定字號大小
- //$captcha5-> setFontSize(25);
-
- //@設定字體
- $captcha5->setFontFamily('c:\windows\fonts\comic.TTF') ;
-
- //@設定語言
- $captcha5->setTextLang('en');
-
- //@設定背景顏色
- //$captcha5->setBgColor(' #000000');
-
- //@設定幹擾點數量
- //$captcha5->setNoisePoint(600);
-
- //@設定幹擾線數量
- /// $captcha5->setNoiseLine(10) );
-
- //@是否設定扭曲
- //$captcha5->setDistortion(true);
-
- //@設定是否顯示親密
- $captcha5->setDistortion(true);
-
- //@設定是否緊密顯示
- $captcha5->setShowBorder(true);
//輸出驗證碼 $code=$captcha5->createImage();$_SESSION['captchaCode']['content']=$code; //$_SESSION['captchaCode']['time']=microtime();?>
複製程式碼
-
- 登入。 //登陸頁面,呼叫產生的驗證碼圖片
-
-
-
-
-
-
|