Question

我的PHP代碼：

$stmt = $mysqli->prepare("INSERT INTO pages (name, content, in_nav, use_page, page, id) VALUES (?, ?, '$in_nav', '$use_page', ?, '$id'); ON DUPLICATE KEY UPDATE name=?, content=?, in_nav='$in_nav', use_page='$use_page', page=?"); 
$stmt->bind_param("ssssss", $name, $body, $page, $name, $body, $page); 
$stmt->execute(); 
$stmt->close(); 

但如果我執行它，它說：

Fatal error: Call to a member function bind_param() on a non-object in C:\xampp\htdocs\cms\admin\cms.php on line 199

當我嘗試$mysqli->error;它說：

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'ON DUPLICATE KEY UPDATE name=?, content=?, in_nav='1', use_page='0', page=?' at line 1

Answer 1

您在ON DUPLICATE KEY UPDATE之前留下了分號，您應該將其刪除。

正確的語法（見documentation）

INSERT INTO table (a,b,c) VALUES (1,2,3),(4,5,6) 
    ON DUPLICATE KEY UPDATE c=VALUES(a)+VALUES(b); 

解決您的問題

$stmt = $mysqli->prepare("INSERT INTO pages (name, content, in_nav, use_page, page, id) VALUES (?, ?, '$in_nav', '$use_page', ?, '$id') ON DUPLICATE KEY UPDATE name=?, content=?, in_nav='$in_nav', use_page='$use_page', page=?"); 

希望這有助於:-)

Answer 2

的)後刪除分號應該修復它

代碼應該是這樣的

$stmt = $mysqli->prepare("INSERT INTO pages (name, content, in_nav, use_page, page, id) VALUES (?, ?, '$in_nav', '$use_page', ?, '$id') ON DUPLICATE KEY UPDATE name=?, content=?, in_nav='$in_nav', use_page='$use_page', page=?");