...已經(jīng)不推薦使用) PDO 擴展包含哪三個類 PDO PDOStatement PDOException PDO 與 Mysqli 區(qū)別 PDO 可以支持多種數(shù)據(jù)庫,而且操作方法一致 Mysqli 只支持Mysql數(shù)據(jù)庫 如何使用PDO連接數(shù)據(jù)庫?什么是DSN?如何關閉連接? 通過new PDO()來連接數(shù)...
...->_prepare_sql); // 執(zhí)行 $pdoSt->execute(); } catch (PDOException $e) { throw $e; } return $pdoSt->fetchAll(PDO::FETCH_ASSOC); // 獲取一個以鍵值數(shù)組形式的結果集 } 測試 修改 test/tes...
...debug 只在當此訪問有效,打印完就關閉 } } catch (PDOException $e) { // when time out, reconnect if($this->_isTimeout($e)) { $this->_closeConnection(); $this->_co...
...); $this->_pdoSt->execute(); $this->_reset(); } catch (PDOException $e) { if($this->_isTimeout($e)) { $this->_closeConnection(); $this->_connec...
...reign key (`branch_id`) references `branches` (`id`) on delete cascade) [PDOException] SQLSTATE[HY000]: General error: 1215 Cannot add ...
...); $this->_pdoSt->execute(); $this->_reset(); } catch (PDOException $e) { if($this->_isTimeout($e)) { $this->_closeConnection(); $this->_connec...
...) { try { return $this->_pdo->beginTransaction(); } catch (PDOException $e) { // 斷線重連 if ($this->_isTimeout($e)) { $this->_closeConnection(); ...
...onnection before we use ycdatabase. try{ $ycdb->initialize(); } catch (PDOException $e) { echo find PDOException when initialize ; var_dump($e); exit; } Native SQL query We can dire...
...onnection before we use ycdatabase. try{ $ycdb->initialize(); } catch (PDOException $e) { echo find PDOException when initialize ; var_dump($e); exit; } Native SQL query We can dire...
... $result = @$sth->fetchAll(); echo ; print_r($result); } catch(PDOException $E){ echo connection failed:.$E->getMessage(); $dbh = null; } unset($dbh); 2.獲取error message sqlite_las...
ChatGPT和Sora等AI大模型應用,將AI大模型和算力需求的熱度不斷帶上新的臺階。哪里可以獲得...
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大模型的訓練用4090是不合適的,但推理(inference/serving)用4090不能說合適,...