我正在使用多选下拉列表在我的项目中。现在我想更新我的mysql数据库中的多选下拉数组值。我成功地在数据库中添加了多选参数值,但是当我尝试更新时,我得到了错误的结果。例如,如果数组中的值是这样的数组([0] => A [1] => B)并且我运行一个循环来更新数据库中的值,然后更新值始终为数组的第二个值(例如[ 1] => B)。我不知道问题出在哪里请帮助..下面是我的代码..如何在MySQL中更新多选下拉列表php
HTML
<select name="countries[]" id="countries" multiple="multiple" placeholder="Which countries did you sell your products in *" required>
<option value="" disabled="disabled" selected>Which countries did you sell your products in *</option>
<option value="Afghanistan">Afghanistan</option>
<option value="Albania">Albania</option>
<option value="Algeria">Algeria</option>
<option value="American Samoa">American Samoa</option>
<option value="Andorra">Andorra</option>
<option value="Angola">Angola</option>
<option value="Anguilla">Anguilla</option>
PHP
$countries = $_POST['countries'];
$user_id = $_SESSION['user_session'];
$size=sizeof($countries);
for($i=0;$i<$size;){
$count = $trade_info->update_supplier_last_financial_count($user_id, $countries[$i]);
$i++;
}
功能(update_supplier_last_financial)
public function update_supplier_last_financial_count($user_id,$last_count){
$db = db::getInstance();
$pdo = $db->getConnection();
try {
$stmt = $pdo->prepare("UPDATE supplier_last_financial_countries SET countries = :last_count WHERE user_id = :user_id ");
$stmt->bindparam(":user_id", $user_id);
$stmt->bindparam(":last_count", $last_count);
$stmt->execute();
return $stmt;
}
catch(PDOException $e) {
echo $e->getMessage();
}
}
在此先感谢...
你for循环将是'for($ i = 0; $ i <$ size; $ i ++){'并且移除内部循环 – Saty
@Saty ..'谢谢你的回复,但它不起作用。相同的结果.. –
你有什么错误? – Saty