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$Stmt->setCommand('select count(id) from MyUser');
echo $Stmt->FetchAsScalar()->getValue();
$result=$conn->query("select count(id) from from MyUser");
$row=$result->fetch_array();
echo $row[0];
你只要使用 php5.3及以上,就可写作echo $conn->query("select count(id) from from MyUser")->fetch_array()[0];