PHP OCI錯誤oci_bind_by_name

Question

我一直在嘗試使此功能正常工作，因為上下文意味着它是我的在線商店的會話提取程序。 它會在oci_bind_by_name行上不斷出錯。 我想知道為什么會這樣，並且可能解決此問題。

function getSessionID($customerID)
{
    global $conn;

    $query = "SELECT SESSIONID FROM \"StrSession\" WHERE EMAIL = ':cid'";
    $sessInfo = oci_parse($conn, $query);

    oci_bind_by_name($sessInfo, ":cid", $customerID, 64);
    oci_execute($sessInfo);

    $row = oci_fetch_array($sessInfo);
    if ($row)
        return $row["SESSIONID"];
    else
        return null;
}

這是我記錄會話的方式：

function logSession($customerID)
{
    global $conn;

    // Is the customer already logged in? If so, log them out then log back in again.
    if (isLoggedIn($customerID))
        unlogSession($customerID);

    $sessionID = session_id();

    $bindVars = array(
        array("varname" => "sessionID", "bindname" => ":sid", "length" => 64),
        array("varname" => "customerID", "bindname" => ":cid", "length" => 64)
    );

    // Insert a new row into the session table with the session ID and customer ID
    $query = oci_parse($conn, "INSERT INTO \"StrSession\" VALUES(':sid', ':cid')");

    foreach ($bindVars as $field)
        oci_bind_by_name($query, $field["bindname"], ${$field["varname"]}, $field["length"]);

    if (DEBUG) echo "Query: $query\n";

    oci_execute($query);
}

最后，這是檢查登錄的方式：

    function checkLogin($username, $pass)
{
    global $conn;

    $passhash = md5($pass);

    $query = "SELECT \"EMAIL\" FROM \"StrCustomer\""
     . " WHERE \"USERNAME\" = '$username' AND \"PASSWORD\" = '$passhash'";
    $loginInfo = oci_parse($conn, $query);
    oci_execute($loginInfo);

    $row = oci_fetch_array($loginInfo);
    if ($row)
        return $row["EMAIL"];
    else
        return null;
}

Answer 1

不要在綁定變量周圍加上單引號。 只需刪除它們。 這是您要為選擇查詢執行的操作：

$query = "SELECT SESSIONID FROM \"StrSession\" WHERE EMAIL = :cid";

對於您的插入查詢：

$query = oci_parse($conn, "INSERT INTO \"StrSession\" VALUES(:sid, :cid)");