Question

我一直收到“没有收到数据”错误，我知道谷歌Chrome浏览器很常见，所以我尝试在IE浏览器中遇到连接问题错误。这是我的脚本，我真的看不出是什么导致了这个错误。

$getAlName = mysql_query("SELECT * FROM categories WHERE id=" . $cat);
$alName = mysql_feth_assoc($getAlName);

$images = mysql_query("SELECT * FROM images WHERE category=" . $alName['name']);
while($imgs = mysql_fetch_object($images)) {
    $url = $imgs->url; 
    $id = $imgs->id;
    echo ("<img src='" . $url . "'></img>\n"); 

}

Answer 1

您需要在字符串周围添加单引号：

"SELECT * FROM images WHERE category = '" . $alName['name']) . "'";

...而且你也输了一个拼写错误，使用mysql_fetch_assoc代替mysql_feth_assoc($getAlName);

Answer 2

//Make a subquery and you'll thank yourself later: 
$q = "SELECT URL, ID FROM images WHERE category IN ".
  "( SELECT * FROM categories WHERE id=" . $cat . ")";

echo $q; // just to test. no data received probably has to do with no output to 
         // the browser. This will output to the browser.

$images = mysql_query($q);
// this is the same.
while($imgs = mysql_fetch_object($images)) {
    $url = $imgs->url; 
    $id = $imgs->id;
    echo ("<img src='" . $url . "'></img>\n"); 
}

GET请求“没有收到数据”

2 个答案: