mysql_fetch_array (MYSQL)

Question

我是个初学者，我犯了一个错误

Warning: mysql_fetch_array(): supplied argument is not a valid MySQL result resource in C:\Program Files\VertrigoServ\www\index.php on line 35

还有代码..。

$sresult = mysql_query("SELECT code, location FROM banners");
while ($row_s = mysql_fetch_array($sresult))
{
    $banner[$row_s["location"]]=$row_s["code"];
}

Answer 1

尝尝这个

$sresult = mysql_query("SELECT code, location FROM banners");
if (!$result) {
    die('Invalid query: ' . mysql_error());
}
while ($row_s = mysql_fetch_array($sresult))
{
    $banner[$row_s["location"]]=$row_s["code"];
}

并检查错误是什么。

Answer 2

查询有问题。尝试：

$result = mysql_query("..");
if(!$result){
  echo "Query error: " . mysql_error();
}