PHP Get File Upload progress

There are many ways to get the file upload progress, this article is about using session.upload_progress, based on the PHP 5.4 version of the method.

"1" File php.ini configuration

Set according to the actual situation

Session.upload_progress.enabled[=1]: Whether to enable upload progress report (default on)
Session.upload_progress.cleanup[=1]: Whether to delete the progress data in time after the upload is complete (default on, recommended to open).
Session.upload_progress.prefix[=upload_progress_]: Progress data will be stored in _session[session.upload_progress.prefix. _POST[ Session.upload_progress.name]]
Session.upload_progress.name[=php_session_upload_progress]: If _post[session.upload_progress.name] is not set, progress will not be reported.
session.upload_progress.freq[=1%]: The frequency of the update progress (number of bytes already processed), and the percent '% ' is also supported.
SESSION.UPLOAD_PROGRESS.MIN_FREQ[=1.0]: Time interval for update progress (seconds)

Allows the client to send a single post request with the maximum data M
post_max_size=2048m

; Accept all data to the maximum time to start executing the script S
Max_input_time=60

The maximum execution time of the script S
Max_execution_time=0

, whether to turn on file upload function
File_uploads = On

; temp directory for file uploads
Upload_tmp_dir= "C:\xampp\tmp"

Allow a single request to upload the maximum file size M
Upload_max_filesize = 2048M

Allow a single post request to upload the maximum number of files simultaneously
Max_file_uploads = 20

Introduction to the "2" _files variable

$_files["File" ["Name"]-the name of the uploaded file $_files["file" ["type"]-the type of the file being uploaded $_files["file" ["Size"]-the size of the uploaded file, in bytes $_files[" File "[" Tmp_name "]-the name of the temporary copy of the file stored on the server $_files[" file "[" Error "]-error code caused by file upload

"3" code

File Upload Form

Set the value of Session.upload_progress.name key

<?phpif (Version_compare (Phpversion (), ' 5.4.0 ', ' < ') exit (' Error:your PHP version is '. Phpversion (). ' But this script requires PHP 5.4.0 or higher. '); if (!intval (Ini_get (' session.upload_progress.enabled '))) exit (' session.upload_progress.enabled is not enabled, Please activate it in the Your PHP config file to use the this script. Require_once ("upload.class.php");? ><!doctype html>
File Upload processing class
<?phpclass cupload{Const Upload_progress_prefix = ' Progress_bar ';    Private $_smsg, $_suploaddir, $_sprogresskey; The short array syntax (only for PHP 5.4.0 and higher) private $_aerrfile = [UPLOAD_ERR_OK = ' T Here are no error, the file uploaded with success. ', Upload_err_ini_size = ' The uploaded file exceeds the UPL oad_max_filesize directive in php.ini. ', upload_err_form_size = ' The uploaded file exceeds the Max_file_size  directive that is specified in the HTML form. ', upload_err_partial = ' The uploaded file was only partially Uploaded. ', Upload_err_no_file = ' NO FILE was uploaded. ', Upload_err_no_tmp_dir = ' Missing a t Emporary folder. ', Upload_err_cant_write = ' Failed to WRITE file to disk. ', Upload_err_extension =&gt ;    ' A PHP extension stopped the file upload. '    ]; Public Function __construct () {//Session initialization if (' = = = = session_id ()) session_start ();        $this->_suploaddir = ' uploads/';    $this->_sprogresskey = Strtolower (Ini_get (' Session.upload_progress.prefix '). Static::upload_progress_prefix);               Public Function __destruct () {if ('!== session_id ()) {$_session = array ();        Session_destroy ();            }}/** * @return Object this */Public function AddFile () {if (!empty ($_files)) {            $this->_smsg = "; foreach ($_files as $sKey + $aFiles) {for ($i = 0, $iNumFiles = count ($aFiles [' tmp_name ']); $ i < $iNumFiles; $i + +) {/** * Get parameters for uploading files */$i                    Errcode = $aFiles [' ERROR '] [$i];                    $iSize = $aFiles [' Size '] [$i];                    $sFileName = $aFiles [' name '] [$i];                   $sTmpFile = $aFiles [' Tmp_name '] [$i]; $sFileDest = $this->_suploaddir.                    $sFileName;                    $sTypeFile = $aFiles [' type '] [$i]; /** * Detection File type *//$bIsImgExt = (Strtolower (substr (STRRCHR ($sFil ename, '. '), 1)); Get the file extension//if (($bIsImgExt = = ' jpeg ' | | $bIsImgExt = = ' jpg ' | | $bIsImgExt = = ' png ' | | Bisimgext = = ' gif ') && (strstr ($sTypeFile, '/', true) = = = ' Image ') {if                        ($iErrCode = = UPLOAD_ERR_OK)                                                        {Move_uploaded_file ($sTmpFile, $sFileDest); $this->_smsg. = ' <p style= ' color:green; Font-weight:bold; Text-align:center ">successful". $sFileName.                            ' File Upload!</p> '; $this->_smsg. = ' <p style= ' text-align:center ' >image type: '. Str_replace (' image/', ', $sTypeFile).                ' <br/> ';            $this->_smsg. = ' Size: '. Round ($iSize/1024).                            ' Kb<br/> '; $this->_smsg. = ' <a href= '. $sFileDest. ' Title= ' Click here for see the original file "target=" _blank "></a></p>"; } else {$this->_smsg. = ' <p style= ' color:r Ed Font-weight:bold; Text-align:center ">error while downloading the file" '. $sFileName.                            ' <br/> '; $this->_smsg. = ' Error code: '. $iErrCode.                            ' <br/> '; $this->_smsg. = ' Error message: '. $this->_aerrfile[$iErrCode].                        ' </p> '; }}//else {//$this->_smsg. = ' <p s TYle= "color:red; Font-weight:bold; Text-align:center ">file type incompatible.                    Please save the image in. jpg,. jpeg,. png or .gif</p> '; }}}}} else {$this->_smsg = ' <p style= ' color:red; font-w Eight:bold;        Text-align:center ">you must select at least one file before submitting the form.</p> ';    } return $this; }/** * Interrupt file Upload * * @return Object this */Public function cancel () {if (!empty ($_sessi        on[$this->_sprogresskey])) $_session[$this->_sprogresskey][' cancel_upload '] = true;    return $this; }/** * @return upload progress */Public Function progress () {if (!empty ($_session[$this->_sprogress            Key]) {$aData = $_session[$this->_sprogresskey];            $iProcessed = $aData [' bytes_processed '];            $iLength = $aData [' content_length ']; $iProgress = ceil (100* $iProcessed/$iLength);        } else {$iProgress = 100;    } return $iProgress;         }/** * @return Object this */Public function Show () {Ob_start ();         Echo ' <p><strong>$_files result:</strong></p><pre> ';         Var_dump ($_files);         Echo ' </pre> ';         Echo ' <p><strong>$_session result:</strong></p><pre> ';         Var_dump ($_session);         Echo ' </pre> ';         $this->_smsg = Ob_get_clean ();     return $this;     }/** * Get the JSON informational message.     * * @param integer $iStatus, 1 = success, 0 = error * @param string $sTxt * @return string JSON Format. */public static function Jsonmsg ($iStatus, $sTxt) {return ' {' status ': '. $iStatus. ', ' txt ': '. $sTxt.     '"}';     }/** * Get the informational message. * * @return String */Public Function __ToString () {return $this->_smsg; }}
Perform file upload operations
<?phprequire_once ("upload.class.php"); $upload = new Cupload; $upload->addfile (); Echo $upload;/*$_session["  Upload_progress_testupload "] = Array (" start_time "= 1234567890,//Request Time" content_length "= 57343257,//upload total file size "Bytes_processed" = 453489,//the size that has been processed "done" = = false,//when all upload processing is completed is true "files" = = Array (0 = > Array ("field_name" = "file1",//The name of the upload box in the form//the following 3 elements equals those in $_files "name "= =" Foo.avi "," tmp_name "="/tmp/phpxxxxxx "," error "= 0," Done "= true,//When this file is processed Tighten will become true "start_time" = 1234567890,//This file starts processing time "bytes_processed" = 57343250,//The size of this file has been processed),//an Other file, not finished uploading, in the same request 1 = = Array ("Field_name" and "File2", "name" = "Bar". Avi "," tmp_name "= NULL," error "= 0," done "and" = False, "start_time" = 1234567899, "Bytes_processe D "= 54554,),);*/?>
get File Upload Progress
<?phpsession_start (); Require_once ("upload.class.php"); Echo (new Cupload ())->progress ();? >

 
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PHP Get File Upload progress