如何在yii2中选择表用户？

Question

i have a trouble, when select table user in yii2 , data no show up

 $sqlGetuser = "select * from user ";
                            $sqlquery = Yii::$app->db->createCommand($sqlGetuser)->query();
                            foreach($sqlquery as $row){
                                // echo $row;
                                // echo "saya";
                                echo $row['username'];
                            }

Answer 1

The error is in this line:

$sqlquery = Yii::$app->db->createCommand($sqlGetuser)->query();

query() returns yii\\db\\DataReader . To return array of rows use queryAll() :

$rows = Yii::$app->db->createCommand($sqlGetuser)->queryAll();

If you want to use query() , you need to read data differently:

$command = $connection->createCommand('SELECT * FROM "user"');
$reader = $command->query();

while ($row = $reader->read()) {
    $rows[] = $row;
}

// equivalent to:
foreach ($reader as $row) {
    $rows[] = $row;
}

// equivalent to:
$rows = $reader->readAll();

See more in official docs .

Also quote table name as adviced since it's reserved word.