我已经使用此代码从表tbl_users中选择数据,但它显示的是1.它是什么意思..
require_once('config.php');
$dbCon = getConnection();
$sql = "SELECT * FROM tbl_users";
$stmt = $dbCon->prepare($sql);
print($stmt->execute());
任何人都可以帮忙...... ????
答案 0 :(得分:0)
如果查询成功运行,$stmt->execute()
会返回true
,其将打印为1
。
要返回数据:
//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);
您可以使用它来打印如下数据:
$rows = $stmt->fetchAll(PDO::FETCH_ASSOC);
//Print all data
$print_r($rows);
//Print data row-by-row
foreach($rows as $row){
print_r($row);
}
答案 1 :(得分:0)
此时您正在打印查询的响应,而不是结果。
要打印结果,您应该执行以下操作:
foreach ($stmt as $row) {
print $row['name'] . "\t";
print $row['first_name'] . "\t";
print $row['birth_date'] . "\n";
}
答案 2 :(得分:0)
成功执行query
execute()
返回True
。
$sql = "SELECT * FROM tbl_users";
$stmt = $dbCon->prepare($sql);
$result = $stmt->fetchAll();
print_r($result);