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首页 / 网页编程 / PHP / php+ajax实现带进度条的上传图片功能【附demo源码下载】

本文实例讲述了php+ajax实现带进度条的上传图片功能。分享给大家供大家参考,具体如下:
运行效果图如下:

代码如下:
<?phpif(isset($_FILES["FileInput"]) && $_FILES["FileInput"]["error"]== UPLOAD_ERR_OK){############ Edit settings ##############$UploadDirectory= "F:/Websites/file_upload/uploads/"; //specify upload directory ends with / (slash)##########################################/*Note : You will run into errors or blank page if "memory_limit" or "upload_max_filesize" is set to low in "php.ini".Open "php.ini" file, and search for "memory_limit" or "upload_max_filesize" limitand set them adequately, also check "post_max_size".*///check if this is an ajax requestif (!isset($_SERVER["HTTP_X_REQUESTED_WITH"])){die();}//Is file size is less than allowed size.if ($_FILES["FileInput"]["size"] > 5242880) {die("File size is too big!");}//allowed file type Server side checkswitch(strtolower($_FILES["FileInput"]["type"])){//allowed file typescase "image/png":case "image/gif":case "image/jpeg":case "image/pjpeg":case "text/plain":case "text/html": //html filecase "application/x-zip-compressed":case "application/pdf":case "application/msword":case "application/vnd.ms-excel":case "video/mp4":break;default:die("Unsupported File!"); //output error}$File_Name = strtolower($_FILES["FileInput"]["name"]);$File_Ext= substr($File_Name, strrpos($File_Name, ".")); //get file extention$Random_Number = rand(0, 9999999999); //Random number to be added to name.$NewFileName= $Random_Number.$File_Ext; //new file nameif(move_uploaded_file($_FILES["FileInput"]["tmp_name"], $UploadDirectory.$NewFileName )){die("Success! File Uploaded.");}else{die("error uploading File!");}}else{die("Something wrong with upload! Is "upload_max_filesize" set correctly?");}
完整实例代码点击此处本站下载。
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