oci_bind_by_name 和 to_date PHP/OCI/Oracle

Question

我有以下內容：

    $ARTIFACT_NAME = $_POST['ArtifactName'];
    $ARTIFACT_TYPE = $_POST['ArtifactType'];
    $ARTIFACT_LOCATION = $_POST['ArtifactLocation'];
    $ARTIFACT_DOMAIN = $_POST['ArtifactDomain'];
    $ARTIFACT_AUTHOR = $_POST['ArtifactAuthor'];
    $ARTIFACT_LABEL = 'DB_'.$ARTIFACT_LOCATION.'_'.$ARTIFACT_DOMAIN.'_'.$ARTIFACT_NAME;
    $AUDIT_CONSTRAINTS = $_POST['AuditConstraints'];
    $SECURITY_CONSTRAINTS = $_POST['SecurityConstraints'];
    $REGISTERED_EMAIL = $_SERVER['HTTP_REMOTE_USER'];
    $REGISTERED_TIMESTAMP = "to_date('15-08-2011 14:32:37', 'DD-MM-YYYY HH24:MI:SS')";

    $query =    "INSERT INTO ".$db_schema.".ARTIFACTS (ARTIFACT_ID, ARTIFACT_NAME, ARTIFACT_TYPE, ARTIFACT_LOCATION, ARTIFACT_DOMAIN, ARTIFACT_AUTHOR, ARTIFACT_LABEL, AUDIT_CONSTRAINTS, SECURITY_CONSTRAINTS, REGISTERED_EMAIL, REGISTERED_TIMESTAMP)
                VALUES (:bind1, :bind2, :bind3, :bind4, :bind5, :bind6, :bind7, :bind8, :bind9, :bind10, :bind11)";
    $statement = oci_parse($connection, $query);

    oci_bind_by_name($statement, ":bind1", $ARTIFACT_ID);
    oci_bind_by_name($statement, ":bind2", $ARTIFACT_NAME);
    oci_bind_by_name($statement, ":bind3", $ARTIFACT_TYPE);
    oci_bind_by_name($statement, ":bind4", $ARTIFACT_LOCATION);
    oci_bind_by_name($statement, ":bind5", $ARTIFACT_DOMAIN);
    oci_bind_by_name($statement, ":bind6", $ARTIFACT_AUTHOR);
    oci_bind_by_name($statement, ":bind7", $ARTIFACT_LABEL);
    oci_bind_by_name($statement, ":bind8", $AUDIT_CONSTRAINTS);
    oci_bind_by_name($statement, ":bind9", $SECURITY_CONSTRAINTS);
    oci_bind_by_name($statement, ":bind10", $REGISTERED_EMAIL);
    oci_bind_by_name($statement, ":bind11", $REGISTERED_TIMESTAMP);

這給出了以下錯誤：

ORA-01858: a non-numeric character was found where a numeric was expected

但是，如果我只是不綁定$REGISTERED_TIMESTAMP並將to_date直接插入到$query中 - 它可以完美運行。

這是怎么回事？！ 這快把我逼瘋了！

Answer 1

您正在使用帶有綁定參數的 Oracle 語句。 這很好，因為它可以防止在 SQL 語句中插入危險代碼的 SQL 注入。 但是，在這種情況下，它會阻止執行TO_CHAR function。 相反，它嘗試將整個字符串轉換為時間戳，這當然不起作用。

解決方案相當簡單：將TO_CHAR function 從綁定參數直接移到語句中：

$REGISTERED_TIMESTAMP = "15-08-2011 14:32:37";

$query =    "INSERT INTO ".$db_schema.".ARTIFACTS (ARTIFACT_ID, ARTIFACT_NAME, ARTIFACT_TYPE, ARTIFACT_LOCATION, ARTIFACT_DOMAIN, ARTIFACT_AUTHOR, ARTIFACT_LABEL, AUDIT_CONSTRAINTS, SECURITY_CONSTRAINTS, REGISTERED_EMAIL, REGISTERED_TIMESTAMP)
            VALUES (:bind1, :bind2, :bind3, :bind4, :bind5, :bind6, :bind7, :bind8,
               :bind9, :bind10, to_date(:bind11, 'DD-MM-YYYY HH24:MI:SS'))";