public static function GetID($length, $table)
{
$id = Util_String::GenRandomStr($length, Util_String::CHAR_NUM);
while (self::$idArray[$id]) {
if ($length <= 5) {
//保证程序健壮性 防止死循环
return false;
}
$id = Util_String::GenRandomStr($length, Util_String::CHAR_NUM);
}
if (DB::Exists($table, array('id' => $id))) {
return false;
}
self::$idArray[$id] = 1;
return $id;
}
/**
* 文件上传
*
*/
public static function Save($uploadFileKey, $prefix = '', $saveFolder = '', $savePath = '')
{
$file = $_FILES[$uploadFileKey];
if (!$file) {
System::AddError("文件上传失败,没有文件", System::MESSAGE_SYS);
return false;
}
$error = $file['error'];
$tmpName = $file['tmp_name'];
if ($error != UPLOAD_ERR_OK) {
System::AddError("文件上传失败,错误码:" . $error, System::MESSAGE_SYS);
return false;
}
$maxSize = self::$max_upload_size;
if ($file['size'] > self::$max_upload_size * 1024 * 1024) {
System::AddError("文件过大,最大不得超过{$maxSize}M:", System::MESSAGE_SYS);
return false;
}
if (!$savePath) {
$fileNames = explode('.', $file['name']);
$fileName = md5($fileNames[0]);
$fileName = $prefix . $fileName . Util_String::GenRandomStr(6);
$countNamesCount = count($fileNames);
if ($countNamesCount > 1) {
$fileName .= ".{$fileNames[$countNamesCount - 1]}";
}
$fileName = strtolower($fileName);
$folder = self::GetDefaultFolder($file['type'], $saveFolder);
if (!$folder) {
return false;
}
$savePath = $folder . '/' . $fileName;
}
$result = move_uploaded_file($tmpName, $savePath);
if (!$result) {
System::AddError("文件保存失败~");
return false;
}
$count = strlen(ROOT_PATH);
$savePath = substr($savePath, $count);
return $savePath;
}
public static function dbRandomId($pkName = 'id')
{
$pkName = $pkName ? $pkName : 'id';
$randomId = Util_String::GenRandomStr(8, Util_String::CHAR_NUM);
$db = self::dbObject();
if ($db->exsits(array($pkName => $randomId), $pkName)) {
return null;
} else {
return $randomId;
}
}
