使用以下代码从数据库中选择数据时

Question

I have used this code to select data from table tbl_users but it is showing 1. what does it mean..

 require_once('config.php');
 $dbCon = getConnection();


 $sql = "SELECT * FROM tbl_users";
 $stmt = $dbCon->prepare($sql);


 print($stmt->execute());

can Anyone Help...????

Answer 1

If the query runs successfully, $stmt->execute() returns true, which will print as 1.

---

To return data:

//Returns first row as array
$row = $stmt->fetch();

//Returns first row as key => value array
$row = $stmt->fetch(PDO::FETCH_ASSOC);

//Returns all rows as key=>value arrays
$rows = $stmt->fetchAll(PDO::FETCH_ASSOC);

You can use this to print data like so:

$rows = $stmt->fetchAll(PDO::FETCH_ASSOC);

//Print all data
$print_r($rows);

//Print data row-by-row
foreach($rows as $row){
    print_r($row);
}