Question

我正在尝试为多个插入值编写代码，但无法正常工作。错误是这个警告：为foreach（）提供的参数无效。任何帮助都会受到欢迎。

if (isset($_POST['mul_pr'])) {
$counter = $mysqli->real_escape_string($_POST["counter"]);
$pr = $mysqli->real_escape_string($_POST["pr"]);
$pr_qty = $mysqli->real_escape_string($_POST["pr_qty"]);
$unit = $mysqli->real_escape_string($_POST["unit"]);
$pr_date = $mysqli->real_escape_string($_POST["pr_date"]);
$gss_date = $mysqli->real_escape_string($_POST["gss_date"]);
$request = $mysqli->real_escape_string($_POST["requested"]);
$approve = $mysqli->real_escape_string($_POST["approved"]);
$desig_r = $mysqli->real_escape_string($_POST["designation_r"]);
$desig_a = $mysqli->real_escape_string($_POST["designation_a"]);
$year = $mysqli->real_escape_string($_POST["year"]);
$pr_id = $mysqli->real_escape_string($_POST["pr_id"]);

    if (count($counter > 0))
    {
        $new = array();
        foreach ($counter as $key => $value)
        {
            $new[] = "('" . $counter . "', '" . $pr . "', '" . $pr_qty . "', '" . $unit . "','" . $pr_date . "', '" . $gss_date . "', '" . $request . "', '" . $approve . "'
            , '" . $desig_r . "', '" . $desig_a . "', '" . $year . "', '" . $pr_id . "')";
        }
        if (count($new) > 0)
        {
            $result = $mysqli->query("INSERT INTO purchase_request (counter, pr, total_quantity, unit, pr_date, gss_date, requested, designation_r, approved, designation_a,year,pr_id)
            VALUES " . implode(', ', $new)); 
        }
    }
}

Answer 1

首先是错误：

if (count($counter > 0))

应该是

if (count($counter) > 0)

您可能会收到警告，因为count($counter)可能为0并且由于伪造的if条件，它可能会在非数组或空数组上执行for循环，因此错误

Answer 2

1. foreach失败的原因是你的案例中的“$ counter”不是一个数组或一个迭代的对象......

我只是建议硬编码你的sql语句，因为你已经在那里

了

$ result = $ mysqli-＆gt; query（“INSERT INTO purchase_request（counter，pr，total_quantity，unit，pr_date，gss_date，requested，designation_r，approved，designation_a，year，pr_id）

VALUES（'$ counter'，'$ pr'，''）;

2。或者，如果你想“自动化”你的名字值对进入sql，你将不得不准备一个更完整的“$ new = array（）”..像这样的东西

$new["counter"] = $mysqli->real_escape_string($_POST["counter"]);
$new["pr"] = $mysqli->real_escape_string($_POST["pr"]);
//and so on...

然后你不再需要使用“array_keys（$ new）”

来循环

$result = $mysqli->query("INSERT INTO purchase_request (".implode(",", array_keys).")
        VALUES ('" . implode("','" , array_values($new))) . "');";

Answer 3

Use this , it work for u 

if (isset($_POST['mul_pr'])) {
$counter = $mysqli->real_escape_string($_POST["counter"]);
$pr = $mysqli->real_escape_string($_POST["pr"]);
$pr_qty = $mysqli->real_escape_string($_POST["pr_qty"]);
$unit = $mysqli->real_escape_string($_POST["unit"]);
$pr_date = $mysqli->real_escape_string($_POST["pr_date"]);
$gss_date = $mysqli->real_escape_string($_POST["gss_date"]);
$request = $mysqli->real_escape_string($_POST["requested"]);
$approve = $mysqli->real_escape_string($_POST["approved"]);
$desig_r = $mysqli->real_escape_string($_POST["designation_r"]);
$desig_a = $mysqli->real_escape_string($_POST["designation_a"]);
$year = $mysqli->real_escape_string($_POST["year"]);
$pr_id = $mysqli->real_escape_string($_POST["pr_id"]);

    if (count($counter) > 0))
    {
        $new = array();
        for($i=0;$i<count($counter);$i++)
        {
            $new[] = "('" . $counter . "', '" . $pr . "', '" . $pr_qty . "', '" . $unit . "','" . $pr_date . "', '" . $gss_date . "', '" . $request . "', '" . $approve . "'
            , '" . $desig_r . "', '" . $desig_a . "', '" . $year . "', '" . $pr_id . "')";

          if (count($new) > 0)
          {
            $result = $mysqli->query("INSERT INTO purchase_request (counter, pr, total_quantity, unit, pr_date, gss_date, requested, designation_r, approved, designation_a,year,pr_id)
            VALUES " . implode(', ', $new)); 
            $new="";
          }
       }




    }
}

插入多个值不起作用

3 个答案: