Question

如何在以下Message: Invalid argument supplied for foreach() - Line Number: 28中修复错误foreach？

<?php
$mileage = array();
$mileage_input = $this->input->post('mileage');
foreach ($mileage_input as $idx => $name) {  //Line 28
    $mileage[] = array(
        'mileage' => $mileage_input[$idx]
    );
}
$data = array(
    'mileage' => json_encode($mileage),
    'customer_number' => $customer_number,
    'name' => $this->input->post('name')
);
$this->db->insert('customer', $data);
?>

Answer 1

$mileage_input可能不是一个数组，这就是它无法正常工作的原因。

Answer 2

很可能$ mileage_input不是数组。也许你必须错误检查$ this-＆gt; input-＆gt; post。

如果你真的不关心这个错误，但只是想不知道错误，你可以在循环之前将值转换为数组。

foreach((array)$mileage_input as $idx => $name {

为foreach（）提供的参数无效

2 个答案: