[PHP] WAHT is my error???

[Andre]

Inside of one ARRAY can I make one WHILE

      function tabelas($tabela_tipo){
      $sql = mysql_query("SELECT * FROM ".$tabela_tipo."_credito ORDER BY
".$tabela_tipo."_ordenar");
          $return =  "<select name=\"tabelas\" class=\"textblack\">\n"; 
      $tabela_array = array("".
           while($registo = mysql_fetch_array($sql)){
           array ("".$registo[0]."",
"".$registo[0]."&nbsp;".$registo[0]."");
          }.""
       foreach($tabela_array as $subarray) { 
           list($num, $text) = $subarray; 
               $return .= "<option value=\"$num\"
selected>$text</option>\n"; 
       } 
       $return .= "</select>\n"; 
       return $return;
    }