PHP微信上传图片处理

<span style="font-family: Arial, Helvetica, sans-serif;"> /**</span>

* 微信端图片上传
* * */
public function uploadSafeWeixinImage($name) {
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;
}

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 = './data/mobile/safe/';
$uploadDir = './data/mobile/safeUpload/';

$cleanupTargetDir = true; // Remove old files
$maxFileAge = 5 * 3600; // Temp file age in seconds
if (!file_exists($targetDir)) {
@mkdir($targetDir);
}

if (!file_exists($uploadDir)) {
@mkdir($uploadDir);
}

$fileName = uniqid("file_");

$fileName = iconv('UTF-8', 'GB2312', $fileName); //转编码
$filePath = $targetDir . DIRECTORY_SEPARATOR . $fileName;
$uploadPath = $uploadDir . DIRECTORY_SEPARATOR . $fileName;

$chunk = isset($_REQUEST["chunk"]) ? intval($_REQUEST["chunk"]) : 0;
$chunks = isset($_REQUEST["chunks"]) ? intval($_REQUEST["chunks"]) : 1;

if ($cleanupTargetDir) {
if (!is_dir($targetDir) || !$dir = opendir($targetDir)) {
$error["code"] = 1;
$error["msg"] = "文件目录不存在-1";
return $error;
}

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);
}

if (!$out = @fopen("{$filePath}_{$chunk}.parttmp", "wb")) {
$error["code"] = 1;
$error["msg"] = "文件目录不存在-2";
return $error;
}

if (!empty($_FILES)) {
if ($_FILES[$name]["error"] || !is_uploaded_file($_FILES[$name]["tmp_name"])) {
$error["code"] = 1;
$error["msg"] = "文件上传失败";
return $error;
}

// Read binary input stream and append it to temp file
if (!$in = @fopen($_FILES[$name]["tmp_name"], "rb")) {
$error["code"] = 1;
$error["msg"] = "文件目录不存在-3";
return $error;
}
} else {
if (!$in = @fopen("php://input", "rb")) {
$error["code"] = 1;
$error["msg"] = "文件目录不存在-4";
return $error;
}
}

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) {
if (!$out = @fopen($uploadPath, "wb")) {
$error["code"] = 1;
$error["msg"] = "文件目录不存在-5";
return $error;
}

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);
}

$error["code"] = 0;
$error["msg"] = "文件上传成功";
return $error;
}