实例介绍
【实例简介】利用thinkphp中的upload类可以获取上传的文件,可带预览效果
【实例截图】
【核心代码】
<?php namespace Home\Controller; use Think\Controller; class IndexController extends Controller { public function upload() { 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"); 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(5 * 60); $targetDir = './Public/Home/uploads'.DIRECTORY_SEPARATOR.'file_material_tmp'; $uploadDir = './Public/Home/uploads'.DIRECTORY_SEPARATOR.'file_material'.DIRECTORY_SEPARATOR.date('Ymd'); $cleanupTargetDir = true; // Remove old files $maxFileAge = 5 * 3600; // Temp file age in seconds // Create target dir if (!file_exists($targetDir)) { @mkdir($targetDir); } // Create target dir if (!file_exists($uploadDir)) { @mkdir($uploadDir); } // Get a file name if (isset($_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($targetDir)) { die('{"jsonrpc" : "2.0", "error" : {"code": 100, "message": "Failed to open temp directory."}, "id" : "id"}'); } while (($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")) { die('{"jsonrpc" : "2.0", "error" : {"code": 102, "message": "Failed to open output stream."}, "id" : "id"}'); } if (!empty($_FILES)) { if ($_FILES["file"]["error"] || !is_uploaded_file($_FILES["file"]["tmp_name"])) { die('{"jsonrpc" : "2.0", "error" : {"code": 103, "message": "Failed to move uploaded file."}, "id" : "id"}'); } // Read binary input stream and append it to temp file if (!$in = @fopen($_FILES["file"]["tmp_name"], "rb")) { die('{"jsonrpc" : "2.0", "error" : {"code": 101, "message": "Failed to open input stream."}, "id" : "id"}'); } } else { if (!$in = @fopen("php://input", "rb")) { die('{"jsonrpc" : "2.0", "error" : {"code": 101, "message": "Failed to open input stream."}, "id" : "id"}'); } } 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")) { die('{"jsonrpc" : "2.0", "error" : {"code": 102, "message": "Failed to open output stream."}, "id" : "id"}'); } 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'=>$uploadPath, //'fileSize'=>$data['size'], 'fileSuffixes'=>$pathInfo['extension'] //'file_id'=>$data['id'], ]; die(json_encode($response)); } // Return Success JSON-RPC response die('{"jsonrpc" : "2.0", "result" : null, "id" : "id"}'); //echo $uploadPath = $uploadDir . DIRECTORY_SEPARATOR .$hashName; } public function preview() { $DIR = 'preview'; // Create target dir if (!file_exists($DIR)) { @mkdir($DIR); } $cleanupTargetDir = true; // Remove old files $maxFileAge = 5 * 3600; // Temp file age in seconds if ($cleanupTargetDir) { if (!is_dir($DIR) || !$dir = opendir($DIR)) { die('{"jsonrpc" : "2.0", "error" : {"code": 100, "message": "Failed to open temp directory."}, "id" : "id"}'); } while (($file = readdir($dir)) !== false) { $tmpfilePath = $DIR . DIRECTORY_SEPARATOR . $file; // Remove temp file if it is older than the max age and is not the current file if (@filemtime($tmpfilePath) < time() - $maxFileAge) { @unlink($tmpfilePath); } } closedir($dir); } $src = file_get_contents('php://input'); if (preg_match("#^data:image/(\w );base64,(.*)$#", $src, $matches)) { $previewUrl = sprintf( "%s://%s%s", isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] != 'off' ? 'https' : 'http', $_SERVER['HTTP_HOST'], $_SERVER['REQUEST_URI'] ); $previewUrl = str_replace("__URL__/preview", "", $previewUrl); $base64 = $matches[2]; $type = $matches[1]; if ($type === 'jpeg') { $type = 'jpg'; } $filename = md5($base64).".$type"; $filePath = $DIR.DIRECTORY_SEPARATOR.$filename; if (file_exists($filePath)) { die('{"jsonrpc" : "2.0", "result" : "'.$previewUrl.'preview/'.$filename.'", "id" : "id"}'); } else { $data = base64_decode($base64); file_put_contents($filePath, $data); die('{"jsonrpc" : "2.0", "result" : "'.$previewUrl.'preview/'.$filename.'", "id" : "id"}'); } } else { die('{"jsonrpc" : "2.0", "error" : {"code": 100, "message": "un recoginized source"}}'); } } //首页面 public function index() { if (isset($_POST['subd'])) { print_r($_POST); } $this->display(); } } ?>
标签: 上传 图片 thinkPHP webuploader
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