ajax php多文件上传代码

2024-09-04 11:45:03

字体：大中小

来源：转载

供稿：网友

<!doctype html public "-//w3c//dtd xhtml 1.0 transitional//en" "http://www.w3.org/tr/xhtml1/dtd/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">

<head>

<meta http-equiv="content-type" content="text/html; charset=utf-8" />

<title>ajax php多文件上传代码</title>

<script>

(function(){



var d = document, w = window;

/**

* get element by id

*/

function get(element){

if (typeof element == "string")

  element = d.getelementbyid(element);

return element;

}

/**

* attaches event to a dom element

*/

function addevent(el, type, fn){

if (w.addeventlistener){

  el.addeventlistener(type, fn, false);

} else if (w.attachevent){

  var f = function(){

    fn.call(el, w.event);

  };

  el.attachevent('on' + type, f)

}

}

/**

* creates and returns element from html chunk

*/

var toelement = function(){

var div = d.createelement('div');

return function(html){

  div.innerhtml = html;

  var el = div.childnodes[0];

  div.removechild(el);

  return el;

}

}();

function hasclass(ele,cls){

return ele.classname.match(new regexp('(s|^)'+cls+'(s|$)'));

}

function addclass(ele,cls) {

if (!hasclass(ele,cls)) ele.classname += " "+cls;

}

function removeclass(ele,cls) {

var reg = new regexp('(s|^)'+cls+'(s|$)');

ele.classname=ele.classname.replace(reg,' ');

}

// getoffset function copied from jquery lib (http://jquery.com/)

if (document.documentelement["getboundingclientrect"]){

// get offset using getboundingclientrect

// http://ejohn.org/blog/getboundingclientrect-is-awesome/

var getoffset = function(el){

  var box = el.getboundingclientrect(),

  doc = el.ownerdocument,

  body = doc.body,

  docelem = doc.documentelement,



  // for ie

  clienttop = docelem.clienttop || body.clienttop || 0,

  clientleft = docelem.clientleft || body.clientleft || 0,



  // in internet explorer 7 getboundingclientrect property is treated as physical,

  // while others are logical. make all logical, like in ie8.



  zoom = 1;



  if (body.getboundingclientrect) {

   var bound = body.getboundingclientrect();

   zoom = (bound.right - bound.left)/body.clientwidth;

  }



  if (zoom > 1){

   clienttop = 0;

   clientleft = 0;

  }



  var top = box.top/zoom + (window.pageyoffset || docelem && docelem.scrolltop/zoom || body.scrolltop/zoom) - clienttop,

  left = box.left/zoom + (window.pagexoffset|| docelem && docelem.scrollleft/zoom || body.scrollleft/zoom) - clientleft;



  return {

   top: top,

   left: left

  };

}



} else {

// get offset adding all offsets

var getoffset = function(el){

  if (w.jquery){

   return jquery(el).offset();

  }



  var top = 0, left = 0;

  do {

   top += el.offsettop || 0;

   left += el.offsetleft || 0;

  }

  while (el = el.offsetparent);



  return {

   left: left,

   top: top

  };

}

}

function getbox(el){

var left, right, top, bottom;

var offset = getoffset(el);

left = offset.left;

top = offset.top;



right = left + el.offsetwidth;

bottom = top + el.offsetheight;



return {

  left: left,

  right: right,

  top: top,

  bottom: bottom

};

}

/**

* crossbrowser mouse coordinates

*/

function getmousecoords(e){

// pagex/y is not supported in ie

// http://www.quirksmode.org/dom/w3c_css教程om.html

if (!e.pagex && e.clientx){

  // in internet explorer 7 some properties (mouse coordinates) are treated as physical,

  // while others are logical (offset).

  var zoom = 1;

  var body = document.body;



  if (body.getboundingclientrect) {

   var bound = body.getboundingclientrect();

   zoom = (bound.right - bound.left)/body.clientwidth;

  }

  return {

   x: e.clientx / zoom + d.body.scrollleft + d.documentelement.scrollleft,

   y: e.clienty / zoom + d.body.scrolltop + d.documentelement.scrolltop

  };

}



return {

  x: e.pagex,

  y: e.pagey

};

}

/**

* function generates unique id

*/

var getuid = function(){

var id = 0;

return function(){

  return 'valumsajaxupload' + id++;

}

}();

function filefrompath(file){

return file.replace(/.*(/|)/, "");

}

function getext(file){

return (/[.]/.exec(file)) ? /[^.]+$/.exec(file.tolowercase()) : '';

}

/**

* cross-browser way to get xhr object

*/

var getxhr = function(){

var xhr;



return function(){

  if (xhr) return xhr;



  if (typeof xmlhttprequest !== 'undefined') {

   xhr = new xmlhttprequest();

  } else {

   var v = [

    "microsoft.xmlhttp",

    "msxml2.xmlhttp.5.0",

    "msxml2.xmlhttp.4.0",

    "msxml2.xmlhttp.3.0",

    "msxml2.xmlhttp.2.0"

   ];



   for (var i=0; i < v.length; i++){

    try {

     xhr = new activexobject(v[i]);

     break;

    } catch (e){}

   }

  }

  return xhr;

}

}();

// please use ajaxupload , ajax_upload will be removed in the next version

ajax_upload = ajaxupload = function(button, options){

if (button.jquery){

  // jquery object was passed

  button = button[0];

} else if (typeof button == "string" && /^#.*/.test(button)){

  button = button.slice(1);

}

button = get(button);



this._input = null;

this._button = button;

this._disabled = false;

this._submitting = false;

// variable changes to true if the button was clicked

// 3 seconds ago (requred to fix safari on mac error)

this._justclicked = false;

this._parentdialog = d.body;



if (window.jquery && jquery.ui && jquery.ui.dialog){

  var parentdialog = jquery(this._button).parents('.ui-dialog');

  if (parentdialog.length){

   this._parentdialog = parentdialog[0];

  }

}



this._settings = {

  // location of the server-side upload script

  action: 'upload.php',

  // file upload name

  name: 'userfile',

  // additional data to send

  data: {},

  // submit file as soon as it's selected

  autosubmit: true,

  // the type of data that you're expecting back from the server.

  // html and xml are detected automatically.

  // only useful when you are using json data as a response.

  // set to "json" in that case.

  responsetype: false,

  // location of the server-side script that fixes safari

  // hanging problem returning "connection: close" header

  closeconnection: '',

  // class applied to button when mouse is hovered

  hoverclass: 'hover',

  // when user selects a file, useful with autosubmit disabled

  onchange: function(file, extension){},

  // callback to fire before file is uploaded

  // you can return false to cancel upload

  onsubmit: function(file, extension){},

  // fired when file upload is completed

  // warning! do not use "false" string as a response!

  oncomplete: function(file, response) {}

};

// merge the users options with our defaults

for (var i in options) {

  this._settings[i] = options[i];

}



this._createinput();

this._rerouteclicks();

}



// assigning methods to our class

ajaxupload.prototype = {

setdata : function(data){

  this._settings.data = data;

},

disable : function(){

  this._disabled = true;

},

enable : function(){

  this._disabled = false;

},

// removes instance

destroy : function(){

  if(this._input){

   if(this._input.parentnode){

    this._input.parentnode.removechild(this._input);

   }

   this._input = null;

  }

},

/**

  * creates invisible file input above the button

  */

_createinput : function(){

  var self = this;

  var input = d.createelement("input");

  input.setattribute('type', 'file');

  input.setattribute('name', this._settings.name);

  var styles = {

   'position' : 'absolute'

   ,'margin': '-5px 0 0 -175px'

   ,'padding': 0

   ,'width': '220px'

   ,'height': '30px'

   ,'fontsize': '14px'

   ,'opacity': 0

   ,'cursor': 'pointer'

   ,'display' : 'none'

   ,'zindex' :  2147483583 //max zindex supported by opera 9.0-9.2x

   // strange, i expected 2147483647

   // doesn't work in ie :(

   //,'direction' : 'ltr'

  };

  for (var i in styles){

   input.style[i] = styles[i];

  }



  // make sure that element opacity exists

  // (ie uses filter instead)

  if ( ! (input.style.opacity === "0")){

   input.style.filter = "alpha(opacity=0)";

  }



  this._parentdialog.appendchild(input);

  addevent(input, 'change', function(){

   // get filename from input

   var file = filefrompath(this.value);

   if(self._settings.onchange.call(self, file, getext(file)) == false ){

    return;

   }

   // submit form when value is changed

   if (self._settings.autosubmit){

    self.submit();

   }

  });



  // fixing problem with safari

  // the problem is that if you leave input before the file select dialog opens

  // it does not upload the file.

  // as dialog opens slowly (it is a sheet dialog which takes some time to open)

  // there is some time while you can leave the button.

  // so we should not change display to none immediately

  addevent(input, 'click', function(){

   self.justclicked = true;

   settimeout(function(){

    // we will wait 3 seconds for dialog to open

    self.justclicked = false;

   }, 2500);

  });



  this._input = input;

},

_rerouteclicks : function (){

  var self = this;



  // ie displays 'access denied' error when using this method

  // other browsers just ignore click()

  // addevent(this._button, 'click', function(e){

  //   self._input.click();

  // });



  var box, dialogoffset = {top:0, left:0}, over = false;



  addevent(self._button, 'mouseo教程ver', function(e){

   if (!self._input || over) return;



   over = true;

   box = getbox(self._button);



   if (self._parentdialog != d.body){

    dialogoffset = getoffset(self._parentdialog);

   }

  });





  // we can't use mouseout on the button,

  // because invisible input is over it

  addevent(document, 'mousemove', function(e){

   var input = self._input;

   if (!input || !over) return;



   if (self._disabled){

    removeclass(self._button, self._settings.hoverclass);

    input.style.display = 'none';

    return;

   }



   var c = getmousecoords(e);

   if ((c.x >= box.left) && (c.x <= box.right) &&

   (c.y >= box.top) && (c.y <= box.bottom)){



    input.style.top = c.y - dialogoffset.top + 'px';

    input.style.left = c.x - dialogoffset.left + 'px';

    input.style.display = 'block';

    addclass(self._button, self._settings.hoverclass);



   } else {

    // mouse left the button

    over = false;



    var check = setinterval(function(){

     // if input was just clicked do not hide it

     // to prevent safari bug



     if (self.justclicked){

      return;

     }



     if ( !over ){

      input.style.display = 'none';

     }



     clearinterval(check);



    }, 25);



    removeclass(self._button, self._settings.hoverclass);

   }

  });



},

/**

  * creates iframe with unique name

  */

_createiframe : function(){

  // unique name

  // we cannot use gettime, because it sometimes return

  // same value in safari :(

  var id = getuid();



  // remove ie6 "this page contains both secure and nonsecure items" prompt

  // http://tinyurl.com/77w9wh

  var iframe = toelement('<iframe src="网页特效:false;" name="' + id + '" />');

  iframe.id = id;

  iframe.style.display = 'none';

  d.body.appendchild(iframe);

  return iframe;

},

/**

  * upload file without refreshing the page

  */

submit : function(){

  var self = this, settings = this._settings;



  if (this._input.value === ''){

   // there is no file

   return;

  }



  // get filename from input

  var file = filefrompath(this._input.value);

  // execute user event

  if (! (settings.onsubmit.call(this, file, getext(file)) == false)) {

   // create new iframe for this submission

   var iframe = this._createiframe();



   // do not submit if user function returns false

   var form = this._createform(iframe);

   form.appendchild(this._input);

   // a pretty little hack to make uploads not hang in safari. just call this

   // immediately before the upload is submitted. this does an ajax call to

   // the server, which returns an empty document with the "connection: close"

   // header, telling safari to close the active connection.

   // http://blog.airbladesoftware.com/2007/8/17/note-to-self-prevent-uploads-hanging-in-safari

   if (settings.closeconnection && /applewebkit|msie/.test(navigator.useragent)){

    var xhr = getxhr();

    // open synhronous connection

    xhr.open('get', settings.closeconnection, false);

    xhr.send('');

   }



   form.submit();



   d.body.removechild(form);

   form = null;

   this._input = null;



   // create new input

   this._createinput();



   var todeleteflag = false;



   addevent(iframe, 'load', function(e){



    if (// for safari

     iframe.src == "javascript：'%3chtml%3e%3c/html%3e';" ||

     // for ff, ie

     iframe.src == "javascript：'<html></html>';"){



     // first time around, do not delete.

     if( todeleteflag ){

      // fix busy state in ff3

      settimeout( function() {

       d.body.removechild(iframe);

      }, 0);

     }

     return;

    }



    var doc = iframe.contentdocument ? iframe.contentdocument : frames[iframe.id].document;

    // fixing opera 9.26

    if (doc.readystate && doc.readystate != 'complete'){

     // opera fires load event multiple times

     // even when the dom is not ready yet

     // this fix should not affect other browsers

     return;

    }



    // fixing opera 9.64

    if (doc.body && doc.body.innerhtml == "false"){

     // in opera 9.64 event was fired second time

     // when body.innerhtml changed from false

     // to server response approx. after 1 sec

     return;

    }



    var response;



    if (doc.xmldocument){

     // response is a xml document ie property

     response = doc.xmldocument;

    } else if (doc.body){

     // response is html document or plain text

     response = doc.body.innerhtml;

     if (settings.responsetype && settings.responsetype.tolowercase() == 'json'){

      // if the document was sent as 'application/javascript' or

      // 'text/javascript', then the browser wraps教程 the text in a <pre>

      // tag and performs html encoding on the contents.  in this case,

      // we need to pull the original text content from the text node's

      // nodevalue property to retrieve the unmangled content.

      // note that ie6 only understands text/html

      if (doc.body.firstchild && doc.body.firstchild.nodename.touppercase() == 'pre'){

       response = doc.body.firstchild.firstchild.nodevalue;

      }

      if (response) {

       response = window["eval"]("(" + response + ")");

      } else {

       response = {};

      }

     }

    } else {

     // response is a xml document

     var response = doc;

    }



    settings.oncomplete.call(self, file, response);



    // reload blank page, so that reloading main page

    // does not re-submit the post. also, remember to

    // delete the frame

    todeleteflag = true;



    // fix ie mixed content issue

    iframe.src = "javascript：'<html></html>';";

   });



  } else {

   // clear input to allow user to select same file

   // doesn't work in ie6

   // this._input.value = '';

   d.body.removechild(this._input);

   this._input = null;



   // create new input

   this._createinput();

  }

},

/**

  * creates form, that will be submitted to iframe

  */

_createform : function(iframe){

  var settings = this._settings;



  // method, enctype must be specified here

  // because changing this attr on the fly is not allowed in ie 6/7

  var form = toelement('<form method="post" enctype="multipart/form-data"></form>');

  form.style.display = 'none';

  form.action = settings.action;

  form.target = iframe.name;

  d.body.appendchild(form);



  // create hidden input element for each data key

  for (var prop in settings.data){

   var el = d.createelement("input");

   el.type = 'hidden';

   el.name = prop;

   el.value = settings.data[prop];

   form.appendchild(el);

  }

  return form;

}

};

})();

</script>

</head>

<body>

<p id="errorremind"></p>

<input id="unloadpic" type="button" value="上传图片" />

<ol id="uploadedname"></ol>

<script type="text/javascript" src="../js/ajaxupload.js"></script>

<script type="text/javascript">

window.onload = function(){

var obtn = document.getelementbyid("unloadpic");

var oshow = document.getelementbyid("uploadedname");

var oremind = document.getelementbyid("errorremind");

new ajaxupload(obtn,{

  action:"file_upload.php",

  name:"upload",

  onsubmit:function(file,ext){

   if(ext && /^(jpg|jpeg|png|gif)$/.test(ext)){

    //ext是后缀名

    obtn.value = "正在上传…";

    obtn.disabled = "disabled";

   }else{

    oremind.style.color = "#ff3300";

    oremind.innerhtml = "不支持非图片格式！";

    return false;

   }

  },

  oncomplete:function(file,response){

   obtn.disabled = "";

   obtn.value = "再上传一张图片";

   oremind.innerhtml = "";

   var newchild =  document.createelement("li");

   newchild.innerhtml = file;

   oshow.appendchild(newchild);

  }

});

};

</script>

</body>

</html>

<?php #file_upload.php 2009-11-06

//开源代码Vevb.com

$file_path = '../../../uploads/';

$file_up = $file_path.basename($_files['upload']['name']);

if(move_uploaded_file($_files['upload']['tmp_name'],$file_up)){

  echo 'success';

}else{

  echo 'fail';

}

?>