Question

我正在编写用户定义的函数来执行sql查询。通常我必须编写try catch块，无论我在编写sql语句。我想写一个函数并将查询传递给该函数并编写try catch块并从该函数返回结果，而不是这样做。我想在该功能中做的只是

如果查询成功执行，则

一个。对非选择查询返回true

湾如果是选择查询，则返回已提取的行
如果查询失败，则执行return fasle

我能够返回成功或查询执行失败但是在使用select传递给函数时我被困住了。有人可以为此建议解决方法。

这是伪代码

function oxeDbQueryExecute($query, $dbObject){
    $returnValue = false;
    try{
        $resultSetObject = $dbObject->query($query);
        if($resultSetObject){ //  query executed successfully
            $returnValue = true;
            if(selectquery){ // if pdo statement contains any rows because of the executed query is a select query
                $returnValue = an array containg all the rows
            }               
        }
    }catch(PDOException $exception){
        error_log($exception->getMessage());
    }

    return $returnValue;
}

Answer 1

// defining function
function oxeDbQueryExecute($query, $dbObject){
    $returnValue = false;
    try{
        $resultSetObject = $dbObject->query($query);
        if($resultSetObject){ //  checking query executed successfully or not
            $returnValue = true;
            /*
                **  checking result set is having any records or not.
                **  Result set will have rows if the query is "select" type query.
                **  In this case return array consisting rows in the format of objects
            */
            $rowOfObjects = $resultSetObject->fetchAll(PDO::FETCH_OBJ);
            if(count($rowOfObjects)){
                $returnValue = $rowOfObjects;
            }
        }
    }catch(PDOException $exception){
        error_log($exception->getMessage()."    Query : ".$query."");
    }       
    return $returnValue;
}

 // creating databse connection
 $db = new PDO("sqlite:D:/****/****/300/******_*_En/Query_ImageAnno.data");
 $db->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION); // to make thorw exceptions instead of fatal error

$queryResult = oxeDbQueryExecute("insert into chapter('tfoken')values('dfdf')", $db);
if($queryResult){
    if(count($queryResult)){ // if executed query is select type query
        print_r($queryResult);
    }
}else{
    echo "failed";
}

如何区分php中的select和nonselect查询

1 个答案: