Your hoster(s) seem to have disabled some function calls, in this case popen(), "for security reasons". You can check on the command line with

php -r "var_dump(function_exists('popen'));"

which then should return "bool(false)". Ask to have that enabled.

@plg:
it might be worth for a set of functions that enable calls to executables (exec, passthru, shell_exec, system, proc_open, popen) to check whether these are indeed callable.

erAck wrote:

@plg:
it might be worth for a set of functions that enable calls to executables (exec, passthru, shell_exec, system, proc_open, popen) to check whether these are indeed callable.

I'm searching a pure PHP alternative to calculate the size of a directory, instead of relying on call to external commands (sometimes it's appropriate like ImageMagick, but here, only to calculate the filsize of _data directory, we can do another way). For now, I have:

function GetDirectorySize($path){
    $bytestotal = 0;
    $path = realpath($path);
    if($path!==false && $path!='' && file_exists($path)){
        foreach(new RecursiveIteratorIterator(new RecursiveDirectoryIterator($path, FilesystemIterator::SKIP_DOTS)) as $object){
            $bytestotal += $object->getSize();
        }
    }
    return $bytestotal;
}

Needs to be checked on PHP 5.3 (or I can simply call it only if PHP > 5.6, since I know it works in 5.6)

erAck wrote:

Your hoster(s) seem to have disabled some function calls, in this case popen(), "for security reasons".

I opened a support ticket with my host provider about enabling popen().

Meanwhile I'd like to understand about the other 3 Wanings:

Warning: fgets() expects parameter 1 to be resource, null given in /web/htdocs/www.sinapsi.org/home/piwigo/admin/intro.php on line 396

Warning: pclose() expects parameter 1 to be resource, null given in /web/htdocs/www.sinapsi.org/home/piwigo/admin/intro.php on line 398

Warning: A non-numeric value encountered in /web/htdocs/www.sinapsi.org/home/piwigo/admin/intro.php on line 406

Thanks

Last edited by passegua (2021-01-20 15:17:36)

Also my host provider told me the same:
"I inform you that for security reasons some PHP functions have been disabled. The functions in question are the following:


     system
     popen
     dl
     passthru
     proc_open
     shell_exec

These functions cannot be enabled in Shared Hosting; if your application requires these instructions, I invite you to review your code so that you do not use it"

So? Should I downgrade? Or what?

Thanks.

passegua wrote:

Meanwhile I'd like to understand about the other 3 Wanings:

They are follow-up warnings because popen() failed.

Oh, it means an issue has been created in the issue tracker. I fixed it, see [Github] Piwigo commit ab81e770

This fix will be included in Piwigo 11.1.0, coming tomorrow.