PHP MySQL：如何從預準備語句中獲得結果？

Question

$conn = new mysqli(.....); 
$param = $_GET['manf']; 

$stmt = $conn->prepare('select manf from manf where manf = ?'); 
$stmt->bind_param('s', $param); 
$stmt->execute(); 
$stmt->store_result(); 

echo $stmt->num_rows; 

$result = $stmt->get_result(); 

if(!$result){ 
    die(mysql_error()); 
} 
while($row = $result->fetch_assoc()){ 
    echo $row['manf']; 
} 

echo $stmt->num_rows打印右鍵但是我無法從while語句中獲得結果。我也試過mysqli::bind_result，但沒有奏效。
我該如何解決這個問題？爲獲取你需要使用$stmt->fetch()

$conn = new mysqli(.....); 
$param = $_GET['manf']; 

$stmt = $conn->prepare('select manf from manf where manf = ?'); 
$stmt->bind_param('s', $param); 
$stmt->execute(); 
$stmt->bind_result($result); 

echo $stmt->num_rows; 

while($stmt->fetch()){ 
    echo $result; 
} 
$stmt->close(); 

：

Answer 1

試試這個。