我正在尝试使用我的PHP应用程序中的plupload（http://www.plupload.com/）。任何小于1mb的东西都上传得很好。分块设置为1mb。因此，如果我尝试在网络检查器中上传一些3.5mb的内容，我会看到4次调用upload.php，第一次总是没问题，所有后续调用错误：SQLSTATE [HY000]：一般错误：2006 MySQL服务器已经消失。错误行号是136，我正在进行插入。如何摆脱这个错误，以便我可以上传带有分块的大文件？
以下是plupload ...的前端设置片段。
$(function() {
$("#uploader").pluploadQueue({
// General settings
//runtimes : 'gears,flash,silverlight,browserplus,html5,html4',
runtimes : 'html5,html4',
url : 'upload.php',
max_file_size : '5mb',
chunk_size : '1mb',
unique_names : false,
multiple_queues : true,
// Resize images on clientside if we can
//resize : {width : 320, height : 240, quality : 90},
multipart_params : {doc_id : "<?php echo $_GET['id'] ?>"},
// Specify what files to browse for
filters : [
{title : "Image files", extensions : "jpg,gif,png"},
{title : "Zip files", extensions : "zip"},
{title : "PDFs", extensions : "pdf"},
{title : "Word Docs", extensions : "doc,docx"}
],
这是后端upload.php文件（第136行是发生错误的地方）......
<?php
require_once("lib_protected_page_no_log.php");
/**
* upload.php
*
* Copyright 2009, Moxiecode Systems AB
* Released under GPL License.
*
* License: http://www.plupload.com/license
* Contributing: http://www.plupload.com/contributing
*/
// HTTP headers for no cache etc
header("Expires: Mon, 26 Jul 1997 05:00:00 GMT");
header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT");
header("Cache-Control: no-store, no-cache, must-revalidate");
header("Cache-Control: post-check=0, pre-check=0", false);
header("Pragma: no-cache");
// Settings
//$targetDir = ini_get("upload_tmp_dir") . DIRECTORY_SEPARATOR . "plupload";
$targetDir = ini_get("upload_tmp_dir");
//$targetDir = 'uploads';
$cleanupTargetDir = true; // Remove old files
$maxFileAge = 5 * 3600; // Temp file age in seconds
// 5 minutes execution time
@set_time_limit(5 * 60);
// Uncomment this one to fake upload time
// usleep(5000);
// Get parameters
$chunk = isset($_REQUEST["chunk"]) ? intval($_REQUEST["chunk"]) : 0;
$chunks = isset($_REQUEST["chunks"]) ? intval($_REQUEST["chunks"]) : 0;
$fileName = isset($_REQUEST["name"]) ? $_REQUEST["name"] : '';
// Clean the fileName for security reasons
$fileName = preg_replace('/[^\w\._]+/', '_', $fileName);
// Make sure the fileName is unique but only if chunking is disabled
if ($chunks < 2 && file_exists($targetDir . DIRECTORY_SEPARATOR . $fileName)) {
$ext = strrpos($fileName, '.');
$fileName_a = substr($fileName, 0, $ext);
$fileName_b = substr($fileName, $ext);
$count = 1;
while (file_exists($targetDir . DIRECTORY_SEPARATOR . $fileName_a . '_' . $count . $fileName_b))
$count++;
$fileName = $fileName_a . '_' . $count . $fileName_b;
}
$filePath = $targetDir . DIRECTORY_SEPARATOR . $fileName;
// Create target dir
if (!file_exists($targetDir))
@mkdir($targetDir);
// Remove old temp files
if ($cleanupTargetDir) {
if (is_dir($targetDir) && ($dir = opendir($targetDir))) {
while (($file = readdir($dir)) !== false) {
$tmpfilePath = $targetDir . DIRECTORY_SEPARATOR . $file;
// Remove temp file if it is older than the max age and is not the current file
if (preg_match('/\.part$/', $file) && (filemtime($tmpfilePath) < time() - $maxFileAge) && ($tmpfilePath != "{$filePath}.part")) {
@unlink($tmpfilePath);
}
}
closedir($dir);
} else {
die('{"jsonrpc" : "2.0", "error" : {"code": 100, "message": "Failed to open temp directory."}, "dir" : "'.$targetDir.'"}');
}
}
// Look for the content type header
if (isset($_SERVER["HTTP_CONTENT_TYPE"]))
$contentType = $_SERVER["HTTP_CONTENT_TYPE"];
if (isset($_SERVER["CONTENT_TYPE"]))
$contentType = $_SERVER["CONTENT_TYPE"];
// Handle non multipart uploads older WebKit versions didn't support multipart in HTML5
if (strpos($contentType, "multipart") !== false) {
if (isset($_FILES['file']['tmp_name']) && is_uploaded_file($_FILES['file']['tmp_name'])) {
// Open temp file
$out = @fopen("{$filePath}.part", $chunk == 0 ? "wb" : "ab");
if ($out) {
// Read binary input stream and append it to temp file
$in = @fopen($_FILES['file']['tmp_name'], "rb");
if ($in) {
while ($buff = fread($in, 4096))
fwrite($out, $buff);
} else
die('{"jsonrpc" : "2.0", "error" : {"code": 101, "message": "Failed to open input stream."}, "id" : "id"}');
@fclose($in);
@fclose($out);
@unlink($_FILES['file']['tmp_name']);
} else
die('{"jsonrpc" : "2.0", "error" : {"code": 102, "message": "Failed to open output stream."}, "id" : "id"}');
} else
die('{"jsonrpc" : "2.0", "error" : {"code": 103, "message": "Failed to move uploaded file."}, "id" : "id"}');
} else {
// Open temp file
$out = @fopen("{$filePath}.part", $chunk == 0 ? "wb" : "ab");
if ($out) {
// Read binary input stream and append it to temp file
$in = @fopen("php://input", "rb");
if ($in) {
while ($buff = fread($in, 4096))
fwrite($out, $buff);
} else
die('{"jsonrpc" : "2.0", "error" : {"code": 101, "message": "Failed to open input stream."}, "id" : "id"}');
@fclose($in);
@fclose($out);
} else
die('{"jsonrpc" : "2.0", "error" : {"code": 102, "message": "Failed to open output stream."}, "id" : "id"}');
}
// Check if file has been uploaded
if (!$chunks || $chunk == $chunks - 1) {
// Strip the temp .part suffix off
rename("{$filePath}.part", $filePath);
$fp = fopen($filePath, 'r');
$content = fread($fp, filesize($filePath));
//$content = addslashes($content);
fclose($fp);
$res = $dbh->prepare("INSERT INTO attachedfiles (doc_id, filename, filetype, filesize, content, uploadbyuser_id) VALUES (?, ?, ?, ?, ?, ?)");
$res->execute(array($_REQUEST['doc_id'],basename($filePath),pathinfo($filePath, PATHINFO_EXTENSION),filesize($filePath),$content,$_SESSION['user_id']));
}
die('{"jsonrpc" : "2.0", "result" : null, "dir" : "'.$targetDir.'"}');
我的数据库句柄看起来像是在upload.php ...
顶部的include中try
{
$dbh = new PDO("mysql:host=$libDBHostname;dbname=$libDBDatabase", $libDBUsername, $libDBPassword);
$dbh->setAttribute( PDO::MYSQL_ATTR_USE_BUFFERED_QUERY,true );
$dbh->setAttribute( PDO::ATTR_ERRMODE, PDO::ERRMODE_WARNING );
//echo 'Connected to database';
}
catch(PDOException $e)
{
echo $e->getMessage();
}