致命錯誤：調用一個成員函數execute（）上的一個非對象在/public_html/website/index.php上線

Question

我想從數據庫中獲取數據。我得到了這個錯誤波紋管。問題是這個代碼在下一個項目中使用，它的工作很好。有人知道問題在哪裏嗎？

我得到這個錯誤：

Fatal error: Call to a member function execute() on a non-object in /public_html/website/index.php on line 

CODE：

include 'scripts/db_conn.php'; 
include 'scripts/functions.php'; 

$prep_stmt = "SELECT date FROM blocked_dates WHERE date >= CURDATE();"; 
    $stmt = $mysqli->prepare($prep_stmt); 
    $stmt->execute(); 
    if (!$stmt) { 
     die('There was an error running the query [' . $mysqli->error . ']'); 
     exit(); 
    } 
    $meta = $stmt->result_metadata(); 
    while ($field = $meta->fetch_field()) { 
     $parameters[] = & $row[$field->name]; 
    } 

    call_user_func_array(array($stmt, 'bind_result'), $parameters); 

    while ($stmt->fetch()) { 
     foreach ($row as $key => $val) { 
      $x[$key] = $val; 
     } 
     $results[] = $x; 
    } 

Answer 1

你不能對對象綁定到一個新的變量。

嘗試啓動這樣的代碼：

$stmt = new Mysqli(); 

連接到數據庫後，

$stmt->prepare($prep_stmt); 
$debug = $stmt->execute(); 

if (!$debug) { 
    die('There was an error running the query [' . $mysqli->error . ']'); 
    exit(); 
} 

$meta = $stmt->result_metadata(); 

while ($field = $meta->fetch_field()) { 
    $parameters[] = & $row[$field->name]; 
} 

call_user_func_array(array($stmt, 'bind_result'), $parameters); 

while ($stmt->fetch()) { 
    foreach ($row as $key => $val) { 
     $x[$key] = $val; 
    } 
    $results[] = $x; 
}