PHP实现大文件分片上传源码可上传几G的文件.rar

<?php 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"); function show_json($status = 1, $return = NULL) { $ret = array('status' => $status, 'result' => array()); if (!is_array($return)) { if ($return) { $ret['result']['message'] = $return; } exit(json_encode($ret)); } else { $ret['result'] = $return; } exit(json_encode($ret)); } if ($_SERVER['REQUEST_METHOD'] == 'OPTIONS') { exit; // finish preflight CORS requests here } if ( !empty($_REQUEST['debug']) ) { $random = rand(0, intval($_REQUEST['debug']) ); if ( $random === 0 ) { header("HTTP/1.0 500 Internal Server Error"); exit; } } @set_time_limit(0); $targetDir = 'uploads/file_material_tmp'; $uploadDir = 'uploads/file_material/'.date('Ymd'); $cleanupTargetDir = true; // Remove old files $maxFileAge = 5 * 3600; // Temp file age in seconds $mode = 0777; // 0777 权限 // Create target dir if (!file_exists($targetDir)) { @mkdir($targetDir, $mode,true); @chmod($targetDir, $mode); } // Create target dir if (!file_exists($uploadDir)) { @mkdir($uploadDir, $mode, true); @chmod($uploadDir, $mode); } // Get a file name if (isset($_REQUEST["name"])) { $fileName = $_REQUEST["name"]; } elseif (!empty($_FILES)) { $fileName = $_FILES["file"]["name"]; } else { $fileName = uniqid("file_"); } $oldName = $fileName; $filePath = $targetDir . DIRECTORY_SEPARATOR . $fileName; // $uploadPath = $uploadDir . DIRECTORY_SEPARATOR . $fileName; // Chunking might be enabled $chunk = isset($_REQUEST["chunk"]) ? intval($_REQUEST["chunk"]) : 0; $chunks = isset($_REQUEST["chunks"]) ? intval($_REQUEST["chunks"]) : 1; // Remove old temp files if ($cleanupTargetDir) { if (!is_dir($targetDir) || !$dir = opendir($targetDir)) { show_json(100, 'Failed to open temp directory.'); } while (($file = readdir($dir)) !== false) { $tmpfilePath = $targetDir . DIRECTORY_SEPARATOR . $file; // If temp file is current file proceed to the next if ($tmpfilePath == "{$filePath}_{$chunk}.part" || $tmpfilePath == "{$filePath}_{$chunk}.parttmp") { continue; } // Remove temp file if it is older than the max age and is not the current file if (preg_match('/\.(part|parttmp)$/', $file) && (@filemtime($tmpfilePath) < time() - $maxFileAge)) { @unlink($tmpfilePath); } } closedir($dir); } // Open temp file if (!$out = @fopen("{$filePath}_{$chunk}.parttmp", "wb")) { show_json(102, 'Failed to open output stream.'); } if (!empty($_FILES)) { if ($_FILES["file"]["error"] || !is_uploaded_file($_FILES["file"]["tmp_name"])) { show_json(103, 'Failed to move uploaded file.'); } // Read binary input stream and append it to temp file if (!$in = @fopen($_FILES["file"]["tmp_name"], "rb")) { show_json(101, 'Failed to open input stream.'); } } else { if (!$in = @fopen("php://input", "rb")) { show_json(101, 'Failed to open input stream.'); } } while ($buff = fread($in, 4096)) { fwrite($out, $buff); } @fclose($out); @fclose($in); rename("{$filePath}_{$chunk}.parttmp", "{$filePath}_{$chunk}.part"); $index = 0; $done = true; for( $index = 0; $index < $chunks; $index++ ) { if ( !file_exists("{$filePath}_{$index}.part") ) { $done = false; break; } } if ( $done ) { $pathInfo = pathinfo($fileName); $hashStr = substr(md5($pathInfo['basename']),8,16); $hashName = time() . $hashStr . '.' .$pathInfo['extension']; $uploadPath = $uploadDir . DIRECTORY_SEPARATOR .$hashName; if (!$out = @fopen($uploadPath, "wb")) { show_json(102, 'Failed to open output stream.'); } if ( flock($out, LOCK_EX) ) { for( $index = 0; $index < $chunks; $index++ ) { if (!$in = @fopen("{$filePath}_{$index}.part", "rb")) { break; } while ($buff = fread($in, 4096)) { fwrite($out, $buff); } @fclose($in); @unlink("{$filePath}_{$index}.part"); } flock($out, LOCK_UN); } @fclose($out); $response = [ 'success'=>true, 'oldName'=>$oldName, 'filePaht'=>$uploadPath, 'fileSuffixes'=>$pathInfo['extension'], 'hashName' => $hashName ]; // 当status返回1时，为上传成功，其他则失败 show_json(1, array('message' => '上传成功', 'info' => $response)); } show_json(200, array('message' => '上传成功中')); ?>