Question

我想将数组中的多个项目插入到foreach的数据库中。我收到一个错误 Message: Undefined offset。有人可以帮我找出导致它的原因吗？

错误：

A PHP Error was encountered
Severity: Notice
Message: Undefined offset: 0
Line Number: 127

A PHP Error was encountered
Severity: Notice
Message: Undefined offset: 0
Line Number: 128

A PHP Error was encountered
Severity: Notice
Message: Undefined offset: 0
Line Number: 129

PHP：

<?php

$guide_input = $this->input->post('guide');
$airline_input = $this->input->post('airline');

$name_r_input = $this->input->post('name_r');
$units_input = $this->input->post('units');
$price_change_input = $this->input->post('price_change');

$guide = array();
$airline = array();
$date_go = array();
$date_back = array();
$residence = array();
foreach ($guide_input as $idx => $name) {
    $guide[] = array(
        'name_guide' => $guide_input[$idx], //Line Number: 121
    );
    $airline[] = array(
        'name_airline' => $airline_input[$idx], //Line Number: 124
    );
    $residence[] = array(
        'name_r' => $name_r_input[$idx], //Line Number: 127
        'units' => $units_input[$idx], //Line Number: 128
        'price_change' => $price_change_input[$idx], //Line Number: 128
    );
};
$data = array(
    'json1' => json_encode($residence),
    'json2' => json_encode($airline),
    'json3' => json_encode($guide),
);

$this->db->insert(tableName, $data);

Answer 1

上面的代码假设所有输入数组（如$ airline_input，$ date_go_input等等）将具有与$ guide_input相同数量的元素。我的猜测是他们不这样做。

为了使代码正确并且运行没有错误，你应该检查：

count($guide_input) == count($airline_input)
&& count($guide_input) == count($date_go_input)
// ... and so on... //

Answer 2

我认为您应该检查guide_input，airline_input，依此类推。每个阵列都有相同的键？

使用`foreach`将数组中的几个项插入数据库

2 个答案: