php操做達夢數據庫示例代碼（包括綁定變量，存儲過程調用，clob類型操做等）

最近花了很多時間把項目數據庫從oracle遷移到達夢8，遷移過程當中碰上了很多問題，後面有時間我整理一下心得。
今天先發一下php使用dm_pdo操做達夢數據庫的示例代碼，裏面包括了常規的綁定變量查詢，存儲過程調用，clob類型操做等。
使用的是達夢提供的pdo_dm驅動，相關配置信息請參考達夢的官方幫助文檔（達夢8安裝時自帶）

ini_set("display_errors","On");
ini_set('log_errors', 1);
ini_set("error_log", "/usr/local/apache2/logs/dm_error.log");

error_reporting(E_ALL)
    
//獲取變量值字符串
function strHt($var) 
{
	return print_r($var, true);
}

/*
function xlog(string $lv, string $format, ...$args)
{
    $log = "%s\t%s:%s\t%s" . PHP_EOL;
    $backtrace = debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS);
    return sprintf($log, $lv, trim($backtrace[0]['file']), $backtrace[0]['line'], sprintf($format, ...$args));
}
echo xlog("info", "我是一條日誌%s", ...["呀"]);
————————————————
版權聲明：本文爲CSDN博主「安木1991」的原創文章，遵循CC 4.0 BY-SA版權協議，轉載請附上原文出處連接及本聲明。
原文連接：https://blog.csdn.net/weixin_42900065/article/details/83509723
*/

function mySubFile($str)
{
	if ($str == "")
	{
		return "";
	}

	return strstr($str, "inc_chk");
}

//日誌打印函數
function dbgLogHt(string $format, ...$args)
{
    $log = "%s:%s %s";
    $backtrace = debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS);
    #$strHt = sprintf($log, '[dbg]',  trim($backtrace[1]['file']), $backtrace[1]['line'], sprintf($format, ...$args));
    #($strHt, 0);
    error_log(sprintf($log, trim($backtrace[0]['file']), $backtrace[0]['line'], sprintf($format, ...$args)));
	//輸出調用堆棧 方便調試
    error_log(sprintf("from %s:%s %s:%s %s:%s %s:%s %s:%s %s:%s %s:%s %s:%s" . PHP_EOL,
			mySubFile($backtrace[1]['file']), $backtrace[1]['line'], mySubFile($backtrace[2]['file']), $backtrace[2]['line'],
			mySubFile($backtrace[3]['file']), $backtrace[3]['line'], mySubFile($backtrace[4]['file']), $backtrace[4]['line'],
			mySubFile($backtrace[5]['file']), $backtrace[5]['line'], mySubFile($backtrace[6]['file']), $backtrace[6]['line'],
			mySubFile($backtrace[7]['file']), $backtrace[7]['line'], mySubFile($backtrace[8]['file']), $backtrace[8]['line'])
    );    
    # error_log(strHt($backtrace));

}

function testPdo()
{
	try {
		dbgLogHt("<pre>"); //dm:表明使用達夢pdo驅動
		$pdo = new PDO("dm:host=127.0.0.1", "user_hch", "pass:kingstarer");
		//設置報錯方式爲拋出異常
		$pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);


		$rs = $pdo->query("SELECT * FROM   V\$VERSION WHERE ROWNUM = 1;");

		$rs->setFetchMode(PDO::FETCH_ASSOC);

		$result_arr = $rs->fetchAll();


		error_log(strHt($result_arr));

		$arr = []; //測試綁定變量 包括入參和出參
		$arr[":iCount"] = '5';
		$arr[":rn"] = 'hhc';
		$strSql = "select  :rn rn, table_name from user_tables where rownum < :iCount";
		$stmt = $pdo->prepare($strSql);
		$stmt->bindParam(":rn", $arr[":rn"]);
		$stmt->bindParam(":iCount", $arr[":iCount"]);
		$stmt->execute();
		while ($row = $stmt->fetch(PDO::FETCH_ASSOC)) {           // $row是一行，使用while依次輸出下一行
			dbgLogHt("while");
			dbgLogHt(strHt($row));
			error_log(strHt($row));
		}
		dbgLogHt("<pre>");

        // 測試存儲過程調用 
		$strSql = "begin  :ret := f_prod_demo(:num, 'UPD', 123, :o_err_code, :o_err_msg, :o_call_stack); end;";
		$stmt = $pdo->prepare($strSql);

		/*
		//用這種 比較簡潔 但實際測試發現不行
		$arr = [];
		$arr[':num'] = '123';
		$arr[':ret'] = 'o_err_code';
		$arr[':o_err_code'] = 'o_err_code';
		$arr[':o_err_msg'] = 'o_err_msg';
		$arr[':o_err_msg'] = 'o_call_stack';
		$stmt->execute($arr);
		print_r($arr);
		*/

		$arr = [];
		$arr[':num'] = '123';
		$arr[':ret'] = 'o_err_code';
		$arr[':o_err_code'] = 'o_err_code';
		$arr[':o_err_msg'] = 'o_err_msg';
		$arr[':o_err_msg'] = 'o_call_stack';
		$stmt->bindParam(':num', $arr[':num']);
		$stmt->bindParam(':ret', $arr[':ret']);
		$stmt->bindParam(':o_err_code', $arr[':o_err_code']);
		$stmt->bindParam(':o_err_msg', $arr[':o_err_msg']);
		$stmt->bindParam(':o_call_stack', $arr[':o_call_stack']);
		$stmt->execute();
		error_log(strHt($arr));
		$stmt->closeCursor();

		//測試達夢插入clob數據
		$strSql = "INSERT into HCH_TEST values(1, '333')";
		$stmt = $pdo->prepare($strSql);
		$stmt->execute();
		error_log("insert clob ok");
		$stmt->closeCursor();

		//測試使用綁定變量插入clob類型數據
		$strSql = "INSERT into HCH_TEST values(:id, :mess)";
		error_log("<prepare>");
		$stmt = $pdo->prepare($strSql);
		error_log("<prepare ok>");
		$arr[':id'] = "123";
		$stmt->bindParam(':id', $arr[':id']);
		error_log("<bindParam ok>");
		$arr[':mess'] = "123";
		$stmt->bindParam(':mess', $arr[':mess']);
		error_log("<bindParam ok>");

		$stmt->execute();
		error_log("<execute ok>");
		$stmt->closeCursor();
		error_log("insert clob param ok");

		error_log("<pre>");

		$pdo = null;
		//更多達夢數據庫開發經驗請參考： https://www.cnblogs.com/kingstarer/
	} catch (PDOException $e) {
		error_log("Error: " . $e->getMessage());
		error_log("<pre>");
		//die();
	}

	//exit(1);
}

網上關於達夢的資料比較少，但願這篇心得能起拋磚引玉的效果。