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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