Die Methode oci_parse() gibt eine Null-Parsing-Methode zurück

Question

Ich möchte eine Klasse erstellen, die mithilfe einiger OCI-Methoden eine Verbindung zu einer ORACLE-Datenbank herstellt.

Aber wenn ich die Parse()-Methode aufrufe, ist sie null und meine FetchArray()-Methode gibt nichts zurück

Datenbank-PHP-Klasse:

class Database
{
    /**
     * @var string
     */
    private string $login;
    /**
     * @var string
     */
    private string $password;
    /**
     * @var string
     */
    private string $description;
    /**
     * @var
     */
    private $connection;
    /**
     * @var
     */
    private $stmt;

    public function __construct(string $login, string $password, string $description)
    {
        $this->login = $login;
        $this->password = $password;
        $this->description = $description;
    }


    public function Connection($character_set = null, $session_mode = null)
    {
        $this->connection = oci_connect($this->login, $this->password, $this->description, $character_set,    $session_mode);
    }

   
    public function Parse(string $sql)
    {
        $this->stmt = oci_parse($this->connection, $sql);
    }


    public function Execute()
    {
        oci_execute($this->stmt);
    }

Testseite.php:

$database = new Database($login, $pass, $descr);
        $database->Connection();
        if ($database->IsConnected()) {
            $database->Parse($sql);
            $database->Execute();
            while ($row = $database->FetchArray(OCI_BOTH) != false) {
                // Use the uppercase column names for the associative array indices
                echo $row[0] . " and " . $row['EMAIL']   . " are the same<br>\n";
                echo $row[1] . " and " . $row['NAME'] . " are the same<br>\n";
            }
            $database->Disconnection();
        } else {
            echo 'Error';
        }

Die Datenbankverbindung ist derzeit erfolgreich.

Array-Methode abrufen:

public function FetchArray($mode = null)
    {
        oci_fetch_array($this->stmt, $mode);
    }

Answer 1

我想我发现了一个问题。在您的 while 条件下，您可能错过了几个括号，以使其将获取行数据的结果与布尔值 false 进行比较。

$database = new Database($login, $pass, $descr);
        $database->Connection();
        if ($database->IsConnected()) {
            $database->Parse($sql);
            $database->Execute();
            while (($row = $database->FetchArray(OCI_BOTH)) != false) {
                // Use the uppercase column names for the associative array indices
                echo $row[0] . " and " . $row['EMAIL']   . " are the same<br>\n";
                echo $row[1] . " and " . $row['NAME'] . " are the same<br>\n";
            }
            $database->Disconnection();
        } else {
            echo 'Error';
        }

此行已更新：

while (($row = $database->FetchArray(OCI_BOTH)) != false) {

我认为从获取函数中删除类型转换也是安全的

public function FetchArray($mode = null):