基于jQuery与PHP实现Web端在线拍照及浏览功能

<div id="main" style="width:90%"> 
 <div id="photos"></div> 
 <div id="camera"> 
 <div id="cam"></div> 
 <div id="webcam"></div> 
 <div id="buttons"> 
  <div class="button_pane" id="shoot"> 
  <a id="btn_shoot" href="" class="btn_blue">拍照</a> 
  </div> 
  <div class="button_pane hidden" id="upload"> 
  <a id="btn_cancel" href="" class="btn_blue">取消</a> <a id="btn_upload" href="" 
  class="btn_green">上传</a> 
  </div> 
 </div> 
 </div> 
</div> 

<link rel="stylesheet" type="text/css" href="fancybox/jquery.fancybox-1.3.4.css" /> 
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.2/ 
jquery.min.js"></script> 
<script type="text/javascript" src="fancybox/jquery.fancybox-1.3.4.pack.js"></script> 
<script type="text/javascript" src="js/webcam.js"></script> 
<script type="text/javascript" src="js/script.js"></script>

#photos{width:80%; margin:40px auto} 
#photos:hover a{opacity:0.5} 
#photos a:hover{opacity:1} 
#camera{width:598px; height:525px; position:fixed; bottom:-466px; left:50%; margin-left:-300px; 
border:1px solid #f0f0f0; background:url(images/cam_bg.jpg) repeat-y; -moz-border-radius: 
4px 4px 0 0; -webkit-border-radius:4px 4px 0 0; border-radius:4px 4px 0 0; -moz-box-shadow: 
0 0 4px rgba(0,0,0,0.6); -webkit-box-shadow:0 0 4px rgba(0,0,0,0.6); box-shadow: 
0 0 4px rgba(0,0,0,0.6);} 
#cam{width:100%; height:66px; display:block; position:absolute; top:0; left:0; background: 
url(images/cam.png) no-repeat center center; cursor:pointer} 
#webcam{width:520px; height:370px; margin:66px auto 22px; line-height:360px; background:#ccc; 
color:#666; text-align:center} 
.button_pane{text-align:center;} 
.btn_blue,.btn_green{width:99px; height:38px; line-height:32px; margin:0 4px; border:none; 
display:inline-block; text-align:center; font-size:14px; color:#fff !important; 
text-shadow:1px 1px 1px #277c9b; background:url(images/buttons.png) no-repeat} 
.btn_green{background:url(images/buttons.png) no-repeat right top; 
text-shadow:1px 1px 1px #498917;} 
.hidden{display:none} 

script.js-Part 1
$(function(){ 
 webcam.set_swf_url('js/webcam.swf'); //载入flash摄像组件的路径 
 webcam.set_api_url('upload.php'); // 上传照片的PHP后端处理文件 
 webcam.set_quality(80);  // 设置图像质量 
 webcam.set_shutter_sound(true, 'js/shutter.mp3'); //设置拍照声音，拍照时会发出“咔嚓”声 
 var cam = $("#webcam"); 
 cam.html( 
 webcam.get_html(cam.width(), cam.height()) //在#webcam中载入摄像组件 
 ); 

script.js-Part 2
var camera = $("#camera"); 
var shown = false; 
$('#cam').click(function(){ 
 if(shown){ 
 camera.animate({ 
  bottom:-466 
 }); 
 }else { 
 camera.animate({ 
  bottom:-5 
 }); 
 } 
 shown = !shown; 
}); 

script.js-Part 3
//拍照 
$("#btn_shoot").click(function(){ 
 webcam.freeze(); //冻结webcam，摄像头停止工作 
 $("#shoot").hide(); //隐藏拍照按钮 
 $("#upload").show(); //显示取消和上传按钮 
 return false; 
}); 
//取消拍照 
$('#btn_cancel').click(function(){ 
 webcam.reset(); //重置webcam，摄像头重新工作 
 $("#shoot").show(); //显示拍照按钮 
 $("#upload").hide(); //隐藏取消和上传按钮 
 return false; 
}); 
//上传照片 
$('#btn_upload').click(function(){ 
 webcam.upload(); //上传 
 webcam.reset();//重置webcam，摄像头重新工作 
 $("#shoot").show();//显示拍照按钮 
 $("#upload").hide(); //隐藏取消和上传按钮 
 return false; 
}); 

$folder = 'uploads/'; //上传照片保存路径 
$filename = date('YmdHis').rand().'.jpg'; //命名照片名称 
$original = $folder.$filename; 
$input = file_get_contents('php://input'); 
if(md5($input) == '7d4df9cc423720b7f1f3d672b89362be'){ 
exit; //如果上传的是空白的照片，则终止程序 
} 
$result = file_put_contents($original, $input); 
if (!$result) { 
echo '{"error":1,"message":"文件目录不可写";}'; 
exit; 
} 
$info = getimagesize($original); 
if($info['mime'] != 'image/jpeg'){ //如果类型不是图片，则删除 
unlink($original); 
exit; 
} 
//生成缩略图 
$origImage = imagecreatefromjpeg($original); 
$newImage = imagecreatetruecolor(154,110); //缩略图尺寸154x110 
imagecopyresampled($newImage,$origImage,0,0,0,0,154,110,520,370); 
imagejpeg($newImage,'uploads/small_'.$filename); 
//写入数据库 
include_once('connect.php'); 
$time = mktime(); 
$sql = "insert into photobooth (pic,uploadtime)values('$filename','$time')"; 
$res = mysql_query($sql); 
if($res){ 
//输出JSON信息 
echo '{"status":1,"message":"Success!","filename":"'.$filename.'"}'; 
}else{ 
echo '{"error":1,"message":"Sorry,something goes wrong.";}'; 
} 

webcam.set_hook('onComplete', function(msg){ 
msg = $.parseJSON(msg); //解析json 
if(msg.error){ 
alert(msg.message); 
} 
else { 
var pic = '<a rel="group" href="uploads/'+msg.filename+'"><img src="uploads/small_'+ 
msg.filename+'"></a>'; 
$("#photos").prepend(pic); //将获取的照片信息插入到index.html的#photo里 
initFancyBox(); //调用fancybox插件 
} 
}); 
webcam.set_hook('onError',function(e){ 
cam.html(e); 
}); 
//调用fancybox 
function initFancyBox(){ 
$("a[rel=group]").fancybox({ 
'transitionIn' : 'elastic', 
'transitionOut' : 'elastic', 
'cyclic' : true 
}); 
} 

function loadpic(){ 
 $.getJSON("getpic.php",function(json){ 
 if(json){ 
  $.each(json,function(index,array){ //循环json数据 
  var pic = '<a rel="group" href="uploads/'+array['pic']+'"> 
  <img src="uploads/small_'+array['pic']+'"></a>'; 
  $("#photos").prepend(pic); 
  }); 
 } 
 initFancyBox(); //调用fancybox插件 
 }); 
} 

include_once("connect.php"); //连接数据库 
//查询数据表中最新的50条记录 
$query = mysql_query("select pic from photobooth order by id desc limit 50"); 
while($row=mysql_fetch_array($query)){ 
 $arr[] = array( 
 'pic' => $row['pic'] 
 ); 
} 
//输出json数据 
echo json_encode($arr); 

CREATE TABLE `photobooth` ( 
 `id` int(11) NOT NULL auto_increment, 
 `pic` varchar(50) NOT NULL, 
 `uploadtime` int(10) NOT NULL, 
 PRIMARY KEY (`id`) 
) ENGINE=MyISAM DEFAULT CHARSET=utf8;