这是我的json php代码
include("connect.php");
$id = $_GET['lid'];
function countRec($fname,$tname) {
$sql = "SELECT * FROM `mail` WHERE confirmed = 'no' AND label_id = '". $id ."'";
$result = mysql_query($sql) or die ('test');
$num = mysql_num_rows($result);
return $num;
}
$page = $_POST['page'];
$rp = $_POST['rp'];
$sortname = $_POST['sortname'];
$sortorder = $_POST['sortorder'];
if (!$sortname) $sortname = 'ID';
if (!$sortorder) $sortorder = 'desc';
$sort = "ORDER BY $sortname $sortorder";
if (!$page) $page = 1;
if (!$rp) $rp = 10;
$start = (($page-1) * $rp);
$limit = "LIMIT $start, $rp";
$sql = "SELECT * FROM `mail` WHERE confirmed = 'no' AND label_id = '". $id ."' $sort $limit";
$result = mysql_query($sql) or die ('test');
$total = countRec();
header("Expires: Mon, 26 Jul 1997 05:00:00 GMT" );
header("Last-Modified: " . gmdate( "D, d M Y H:i:s" ) . "GMT" );
header("Cache-Control: no-cache, must-revalidate" );
header("Pragma: no-cache" );
header("Content-type: text/x-json");
$json = "";
$json .= "{\n";
$json .= "page: $page,\n";
$json .= "total: $total,\n";
$json .= "rows: [";
$rc = false;
while ($row = mysql_fetch_array($result)) {
if ($rc) $json .= ",";
$json .= "\n{";
$json .= "id:'".$row['ID']."',";
$json .= "cell:['".$row['email']."'";
$json .= ",'".addslashes($row['name'])."'";
$json .= ",'".addslashes($row['country'])."'";
$json .= ",'".addslashes($row['bus'])."'";
$json .= ",'".addslashes($row['website'])."'";
$json .= ",'".addslashes($row['music'])."'";
$json .= ",'".addslashes($row['radio'])."']";
$json .= "}";
$rc = true;
}
$json .= "]\n";
$json .= "}";
echo $json;
我发布数据到这个php就像“req.php?lid = 3434”
并像$id = $_GET['lid'];
一样获得“盖子”,如你所见
但是在我的mysql中,当我写WHERE label_id = '$id'
时它不起作用
有什么建议吗?
由于
答案 0 :(得分:3)
您正在引用函数内的全局$id
。您需要将其标记为全局:
function countRec($fname,$tname) {
global $id;
//etc
}
或者你可以将它作为第三个参数传递给函数,这可能是一个更好的解决方案。
请注意,此代码容易受到SQL注入攻击。你应该引用$id
(例如使用mysql_real_escape_string()
),或者如果它总是一个整数你可以投射它,例如$id = (int) $id
。更好的是,您可以使用PDO并使用prepared statments and bound parameters,这可以解决此问题。