PHP: Function not returning Array [duplicate]

Question

Can someone help me out? I cannot see it. The function below is not returning the array. The print_r($list)(above the return) prints the array on the screen. But the print_r($files)returns an empty array....

function listFolderFiles($dir){
    $ffs = scandir($dir);
    $i = 0;
    $list = array();
    foreach ( $ffs as $ff ){
        if ( $ff != '.' && $ff != '..' ){
            if ( strlen($ff)>=5 ) {
                if ( substr($ff, -4) == '.mp4' ) {
                    $value = $dir.'/'.$ff;
                    $list[] = $value;
                }
            }
            if( is_dir($dir.'/'.$ff) )
                    listFolderFiles($dir.'/'.$ff);
        }
    }

    print_r($list);  // Returns the full array with values
    return $list;
}
$files = listFolderFiles($_POST['path']);
print_r($files) // Returns an empty array..... :(:(

My mistake, made a typo when I posted the question. Was written right in the PHP file though, so still not working — Erik van de Ven
– Erik van de Ven, Commented Oct 20, 2014 at 7:07
I notice that the $list returns two times an array..... One filled and one empty. Maybe it runes the listFolderFiles too many times? — Erik van de Ven
– Erik van de Ven, Commented Oct 20, 2014 at 7:09
So, when you run it like this, then both print_rs are called, and one prints out the desired output, and one does not? Is it possible, that the POST value doesn't arrive/is not correct? — Balázs Édes
– Balázs Édes, Commented Oct 20, 2014 at 7:09
My guess is that it finds something in the if( is_dir($dir.'/'.$ff) ) part. But there you are ignoring its return value. — enricog
– enricog, Commented Oct 20, 2014 at 7:11

Gerald Schneider · Accepted Answer · 2014-10-20 07:31:54Z

3

Your recursion call doesn't handle the returned array:

listFolderFiles($dir.'/'.$ff);

You need to merge the array here:

$list = array_merge($list, listFolderFiles($dir.'/'.$ff) );

edited Oct 20, 2014 at 7:31

answered Oct 20, 2014 at 7:10

Gerald Schneider

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1 Comment

Gerald Schneider Over a year ago

@ErikVandeVen I updated the answer, try it like this.

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