Files driver rare bug

[arnaspet]

Configuration

• PhpFastCache version: 7.0.5
• PhpFastCache API version: 2.0.4
• PHP version: PHP 7.2.19-1+0~20190531112637.22+stretch~1.gbp75765b (cli) (built: May 31 2019 11:26:38) ( NTS )
• Operating system: Debian 9

Describe the bug

Return value of Phpfastcache\Drivers\Files\Driver::readfile() must be of the type string, boolean returned

vendor/phpfastcache/phpfastcache/lib/Phpfastcache/Core/Pool/IO/IOHelperTrait.php in readfile at line 259

    {
        if (\function_exists('file_get_contents')) {
            return \file_get_contents($file);
        }

To Reproduce
Happens really rarely ( 0.01...% percent )

Expected behavior

well it should throw at least an exception with why it couldnt read file content.

Also config for Files driver

     CacheManager::setDefaultConfig(new FilesConfig([
                'path' => <doesnt-matter>,
                'securityKey' => <doesnt_matter>,
                'secureFileManipulation' => true,
                'preventCacheSlams' => true,
            ]));

Oh and i tried printing out what was the error with error_get_last. it returns that failed to open stream: No such file or directory

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[Geolim4]

Hello,

I'll push a fix ASAP since this could be caused by the fact that php is "caching" file stats and returning "false" while the file currently exists.

Cheers,
Georges