PHP Ajax上传文件实例[ajaxfileupload.js]_PHP教程

讲过利用jquery ajax与php实现图片上传，下面我介绍利用php ajax实现各种文件无刷新上传，直接放实例希望给各位同学有帮助。

可以批量进行添加上传，简单方便

代码如下

复制代码

jQuery.extend({           createUploadIframe: function(id, uri)     {            //create frame             var frameId = 'jUploadFrame' + id;             var iframeHtml = '            if(window.ActiveXObject)            {                 if(typeof uri== 'boolean'){                   iframeHtml += ' src="' + 'javascript:false' + '"';                   }                 else if(typeof uri== 'string'){                   iframeHtml += ' src="' + uri + '"';                   }            }            iframeHtml += ' />';            jQuery(iframeHtml).appendTo(document.body);               return jQuery('#' + frameId).get(0);            },     createUploadForm: function(id, fileElementId, data)     {        //create form        var formId = 'jUploadForm' + id;        var fileId = 'jUploadFile' + id;        var form = jQuery(' ');          if(data)        {            for(var i in data)            {               jQuery('').appendTo(form);            }                 }             var oldElement = jQuery('#' + fileElementId);        var newElement = jQuery(oldElement).clone();        jQuery(oldElement).attr('id', fileId);        jQuery(oldElement).before(newElement);        jQuery(oldElement).appendTo(form);                   //set attributes        jQuery(form).css('position', 'absolute');        jQuery(form).css('top', '-1200px');        jQuery(form).css('left', '-1200px');        jQuery(form).appendTo('body');            return form;     },       ajaxFileUpload: function(s) {         // TODO introduce global settings, allowing the client to modify them for all requests, not only timeout              s = jQuery.extend({}, jQuery.ajaxSettings, s);         var id = new Date().getTime()               var form = jQuery.createUploadForm(id, s.fileElementId, (typeof(s.data)=='undefined'?false:s.data));        var io = jQuery.createUploadIframe(id, s.secureuri);        var frameId = 'jUploadFrame' + id;        var formId = 'jUploadForm' + id;               // Watch for a new set of requests         if ( s.global && ! jQuery.active++ )        {            jQuery.event.trigger( "ajaxStart" );        }                    var requestDone = false;         // Create the request object         var xml = {}           if ( s.global )             jQuery.event.trigger("ajaxSend", [xml, s]);         // Wait for a response to come back         var uploadCallback = function(isTimeout)        {                     var io = document.getElementById(frameId);             try            {                           if(io.contentWindow)               {                    xml.responseText = io.contentWindow.document.body?io.contentWindow.document.body.innerHTML:null;                    xml.responseXML = io.contentWindow.document.XMLDocument?io.contentWindow.document.XMLDocument:io.contentWindow.document;                                  }else if(io.contentDocument)               {                    xml.responseText = io.contentDocument.document.body?io.contentDocument.document.body.innerHTML:null;                   xml.responseXML = io.contentDocument.document.XMLDocument?io.contentDocument.document.XMLDocument:io.contentDocument.document;               }                                }catch(e)            {               jQuery.handleError(s, xml, null, e);            }             if ( xml || isTimeout == "timeout")            {                             requestDone = true;                 var status;                 try {                     status = isTimeout != "timeout" ? "success" : "error";                     // Make sure that the request was successful or notmodified                     if ( status != "error" )                   {                         // process the data (runs the xml through httpData regardless of callback)                         var data = jQuery.uploadHttpData( xml, s.dataType );                            // If a local callback was specified, fire it and pass it the data                         if ( s.success )                             s.success( data, status );                             // Fire the global callback                         if( s.global )                             jQuery.event.trigger( "ajaxSuccess", [xml, s] );                     } else                         jQuery.handleError(s, xml, status);                 } catch(e)               {                     status = "error";                     jQuery.handleError(s, xml, status, e);                 }                   // The request was completed                 if( s.global )                     jQuery.event.trigger( "ajaxComplete", [xml, s] );                   // Handle the global AJAX counter                 if ( s.global && ! --jQuery.active )                     jQuery.event.trigger( "ajaxStop" );                   // Process result                 if ( s.complete )                     s.complete(xml, status);                   jQuery(io).unbind()                   setTimeout(function()                                 {   try                                    {                                        jQuery(io).remove();                                        jQuery(form).remove();                                                                             } catch(e)                                    {                                        jQuery.handleError(s, xml, null, e);                                    }                                                                 }, 100)                   xml = null               }         }         // Timeout checker         if ( s.timeout > 0 )        {             setTimeout(function(){                 // Check to see if the request is still happening                 if( !requestDone ) uploadCallback( "timeout" );             }, s.timeout);         }         try        {              var form = jQuery('#' + formId);            jQuery(form).attr('action', s.url);            jQuery(form).attr('method', 'POST');            jQuery(form).attr('target', frameId);             if(form.encoding)            {               jQuery(form).attr('encoding', 'multipart/form-data');                           }             else            {                 jQuery(form).attr('enctype', 'multipart/form-data');                    }                    jQuery(form).submit();           } catch(e)        {                      jQuery.handleError(s, xml, null, e);         }               jQuery('#' + frameId).load(uploadCallback );         return {abort: function () {}};        },       uploadHttpData: function( r, type ) {         var data = !type;         data = type == "xml" || data ? r.responseXML : r.responseText;         // If the type is "script", eval it in global context         if ( type == "script" )             jQuery.globalEval( data );         // Get the JavaScript object, if JSON is used.         if ( type == "json" )             eval( "data = " + data );         // evaluate scripts within html         if ( type == "html" )             jQuery(" ").html(data).evalScripts();           return data;     } })              id="file1" size="30" />        onclick="return ajaxFileUpload();" />        style="display: none">UpLoading...

 
up_deal.php

代码如下

复制代码

if ((($_FILES["file1"]["type"] == "image/gif") || ($_FILES["file1"]["type"] == "image/jpeg") || ($_FILES["file1"]["type"] == "image/bmp") || ($_FILES["file1"]["type"] == "image/pjpeg")) && ($_FILES["file1"]["size"]     $extend = explode(".",$_FILES["file1"]["name"]);     $key = count($extend)-1;     $ext = ".".$extend[$key];     $newfile = time().$ext;       if(!file_exists('upload')){mkdir('upload');}     move_uploaded_file($_FILES["file1"]["tmp_name"],"upload/" . $newfile);     @unlink($_FILES['file1']);     echo $newfile; }else {     echo 'error'; } ?>

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