mysql中的链接资源正在被处理

同一个mysql资源可以用于多个查询吗？

 $queries=array($q1, $q2);
 $link=mysql_connect(...);
 mysql_select_db(...);
 for($i = 0; $i < count($queries); $i++) {
      echo "Link is of type " . gettype($link) . "<br />";
      if(is_resource($link)) {
           mysql_query($queries[$i], $link);
      } else {
           echo "Did not execute query. <br/>";
      }
 }
 disconnect($link);

输出：

link is of type resource
Successfully executed query
link is of type resource
Did not execute query.

EDIT：我想从输出中指出，第一个查询执行，但第二个不执行。在两者之间，链接没有更改。查询的执行方式也不重要（IMHO）。

编辑2：我下面的确切代码：

$link = mysql_connect("localhost", ........);
mysql_select_db(....);
for ($row = 0; $row < $numRows; $row++) {
    if (($query = buildQuery($mainArr, $rowArr, $row)) === null) {
        echo "Error - could not build query. <br />";
        return;
    }
    echo "Link is of type " . gettype($link) . "<br />"; 
    if (is_resource($link)) {
        if ((mysql_query($query, $link))) {
            if($debug) {
                echo "Successfully executed query <br />";
            }
        } else {
            if ($debug) {
                echo "This comes up when row is " . $row . "<br />";
                echo "Link is of type " . gettype($link) . "<br />";
                echo "Datawrite failed - " . $query . "<br />";
                echo "the official line is " . mysql_error($link) . "<br />";
            }
        }
    } else {
        echo "Did not execute query <br />";
    }
}
disconnect($link);