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The contents of $newArray[pathToFile] is a unix dir path, like /usr/local/bin for example.while ( $newArray = mysql_fetch_array ( $result ) ){  $a = array();  $b =& $a;  foreach (explode('/', trim($newArray[pathToFile], '/')) as $seg)  {    $b[$seg] = array();    $b =& $b[$seg];  }}?>