PHP only printing last element of returned array -

i'm trying populate array file names ending in "mp4" recursive function looking through list of sub-directories.

when print elements in array foreach loop before return statement, array displays of elements correctly. however, when create variable return of method , try iterate through again, receive last entry in array.

could caused recursion in loop?

my code follows:

<?php function listfolderfiles($dir){     $array = array();     $ffs = scandir($dir);     foreach($ffs $ff){         if($ff != '.' && $ff != '..'){             // adds array.             if(substr($ff, -3) == "mp4"){                 $array[] = $ff;             }              // steps next subdirectory.             if(is_dir($dir.'/'.$ff)){                 listfolderfiles($dir.'/'.$ff);             }         }     }      // @ point if insert foreach loop,      //   of elements display      return $array; }  // new '$array' variable includes //   last entry in array in function $array = listfolderfiles("./ads/");  foreach($array $item){     echo $item."<p>"; } ?> 

any appreciated! apologize sloppiness. i'm new php.

thanks in advance!

when recurse subdirectory, need merge results array. otherwise, array contains matching files original directory, matches subdirectories discarded.

function listfolderfiles($dir){     $array = array();     $ffs = scandir($dir);     foreach($ffs $ff){         if($ff != '.' && $ff != '..'){             // adds array.             if(substr($ff, -3) == "mp4"){                 $array[] = $ff;             }              // steps next subdirectory.             if(is_dir($dir.'/'.$ff)){                 $array = array_merge($array, listfolderfiles($dir.'/'.$ff));             }         }     }      // @ point if insert foreach loop,      //   of elements display      return $array; }