file_temp.php

См. документацию.

<?php
 
use Bitrix\Main;
use Bitrix\Main\Security;
 
class CTempFile
{
    private static $is_exit_function_registered = false;
    private static $arFiles = [];
 
    public static function GetAbsoluteRoot()
    {
        if (defined('BX_TEMPORARY_FILES_DIRECTORY'))
        {
            return rtrim(BX_TEMPORARY_FILES_DIRECTORY, '/');
        }
        else
        {
            $io = CBXVirtualIo::GetInstance();
 
            return $io->CombinePath(
                $_SERVER["DOCUMENT_ROOT"],
                COption::GetOptionString("main", "upload_dir", "upload"),
                "tmp"
            );
        }
    }
 
    public static function GetFileName($file_name = '')
    {
        $dir_name = self::GetAbsoluteRoot();
        $file_name = rel2abs("/", "/" . $file_name);
 
        while (true)
        {
            $dir_add = Security\Random::getString(32);
 
            $temp_path = $dir_name . "/" . $dir_add . $file_name;
 
            if (!file_exists($temp_path))
            {
                //Delayed unlink
                if (!self::$is_exit_function_registered)
                {
                    self::$is_exit_function_registered = true;
                    register_shutdown_function(['CTempFile', 'Cleanup']);
                }
 
                self::$arFiles[$temp_path] = $dir_name . "/" . $dir_add;
 
                //Function ends only here
                return $temp_path;
            }
        }
    }
 
    public static function GetDirectoryName($hours_to_keep_files = 0, $subdir = "")
    {
        if ($hours_to_keep_files <= 0)
        {
            return self::GetFileName();
        }
 
        $temp_path = null;
        if ($subdir === "")
        {
            $dir_name = self::GetAbsoluteRoot() . '/BXTEMP-' . date('Y-m-d/H/', time() + 3600 * $hours_to_keep_files);
            while (true)
            {
                $dir_add = Security\Random::getString(32);
                $temp_path = $dir_name . $dir_add . "/";
 
                if (!file_exists($temp_path))
                {
                    break;
                }
            }
        }
        else //Fixed name during the session
        {
            $localStorage = Main\Application::getInstance()->getLocalSession('userSessionData');
            if (!isset($localStorage['tempFileToken']))
            {
                $localStorage->set('tempFileToken', Security\Random::getString(32));
            }
            $token = $localStorage->get('tempFileToken');
 
            $subdir = implode("/", (is_array($subdir) ? $subdir : [$subdir, $token])) . "/";
            while (str_contains($subdir, "//"))
            {
                $subdir = str_replace("//", "/", $subdir);
            }
            $bFound = false;
            for ($i = $hours_to_keep_files - 1; $i > 0; $i--)
            {
                $dir_name = self::GetAbsoluteRoot() . '/BXTEMP-' . date('Y-m-d/H/', time() + 3600 * $i);
                $temp_path = $dir_name . $subdir;
                if (file_exists($temp_path) && is_dir($temp_path))
                {
                    $bFound = true;
                    break;
                }
            }
 
            if (!$bFound)
            {
                $dir_name = self::GetAbsoluteRoot() . '/BXTEMP-' . date('Y-m-d/H/', time() + 3600 * $hours_to_keep_files);
                $temp_path = $dir_name . $subdir;
            }
        }
 
        //Delayed unlink
        if (!self::$is_exit_function_registered)
        {
            self::$is_exit_function_registered = true;
            register_shutdown_function(['CTempFile', 'Cleanup']);
        }
 
        //Function ends only here
        return $temp_path;
    }
 
    //PHP shutdown cleanup
    public static function Cleanup()
    {
        foreach (self::$arFiles as $temp_path => $temp_dir)
        {
            if (file_exists($temp_path))
            {
                //Clean a file from CTempFile::GetFileName('some.jpg');
                if (is_file($temp_path))
                {
                    unlink($temp_path);
                    @rmdir($temp_dir);
                }
                //Clean whole temporary directory from CTempFile::GetFileName('');
                elseif (
                    str_ends_with($temp_path, '/')
                    && !str_contains($temp_path, "BXTEMP")
                    && is_dir($temp_path)
                )
                {
                    CTempFile::_absolute_path_recursive_delete($temp_path);
                }
            }
            elseif (file_exists($temp_dir))
            {
                @rmdir($temp_dir);
            }
        }
 
        //Clean directories with $hours_to_keep_files > 0
        $dir_name = self::GetAbsoluteRoot() . "/";
        if (file_exists($dir_name))
        {
            if ($handle = opendir($dir_name))
            {
                while (($day_files_dir = readdir($handle)) !== false)
                {
                    if ($day_files_dir == '.' || $day_files_dir == '..')
                    {
                        continue;
                    }
                    if (preg_match("/^BXTEMP-(.*?)\$/", $day_files_dir) && is_dir($dir_name . $day_files_dir))
                    {
                        CTempFile::_process_directory($dir_name, $day_files_dir);
                    }
                }
                closedir($handle);
            }
        }
    }
 
    private static function _process_directory($dir_name, $day_files_dir)
    {
        $this_day_name = 'BXTEMP-' . date('Y-m-d');
        if ($day_files_dir < $this_day_name)
        {
            CTempFile::_absolute_path_recursive_delete($dir_name . $day_files_dir);
        }
        elseif ($day_files_dir == $this_day_name)
        {
            if ($hour_handle = opendir($dir_name . $day_files_dir))
            {
                $this_hour_name = date('H');
                while (($hour_files_dir = readdir($hour_handle)) !== false)
                {
                    if ($hour_files_dir == '.' || $hour_files_dir == '..')
                    {
                        continue;
                    }
                    if ($hour_files_dir < $this_hour_name)
                    {
                        CTempFile::_absolute_path_recursive_delete($dir_name . $day_files_dir . '/' . $hour_files_dir);
                    }
                }
            }
        }
    }
 
    private static function _absolute_path_recursive_delete($path)
    {
        if ($path == '' || $path == '/')
        {
            return false;
        }
 
        $f = true;
        if (is_file($path) || is_link($path))
        {
            if (@unlink($path))
            {
                return true;
            }
            return false;
        }
        elseif (is_dir($path))
        {
            if ($handle = opendir($path))
            {
                while (($file = readdir($handle)) !== false)
                {
                    if ($file == "." || $file == "..")
                    {
                        continue;
                    }
 
                    if (!CTempFile::_absolute_path_recursive_delete($path . "/" . $file))
                    {
                        $f = false;
                    }
                }
                closedir($handle);
            }
            $r = @rmdir($path);
            if (!$r)
            {
                return false;
            }
            return $f;
        }
        return false;
    }
}