php 如何循环遍历 JSON 数组
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时间：2020-08-25 10:52:07 来源:igfitidea点击:
How do I loop through JSON array
提问by Anthony
How do I traverse and display the names in the following JSON using CodeIgniter?
如何使用 CodeIgniter 在以下 JSON 中遍历和显示名称？
<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
class Search extends CI_Controller {
public function index()
{
$json = '[{"name": "John Doe",
"address": "115 Dell Avenue, Somewhere",
"tel": "999-3000",
"occupation" : "Clerk"},
{"name": "Jane Doe",
"address": "19 Some Road, Somecity",
"tel": "332-3449",
"occupation": "Student"}]';
for (int $i = 0; $i < $json.length; $i++){
???
}
//$obj = json_decode($json);
//$this->load->view('search_page');
}
}
/* End of file search.php */
/* Location: ./application/controllers/search.php */
回答by Josh
1) $jsonis a string you need to decode it first.
1)$json是一个需要先解码的字符串。
$json = json_decode($json);
2) you need to loop through the object and get its members
2）您需要遍历对象并获取其成员
foreach($json as $obj){
echo $obj->name;
.....
}
回答by Mike Q
another example:
另一个例子：
<?php
//lets make up some data:
$udata['user'] = "mitch";
$udata['date'] = "2006-10-19";
$udata['accnt'] = "EDGERS";
$udata['data'] = $udata; //array inside
var_dump($udata); //show what we made
//lets put that in a file
$json = file_get_contents('file.json');
$data = json_decode($json);
$data[] = $udata;
file_put_contents('file.json', json_encode($data));
//lets get our json data
$json = file_get_contents('file.json');
$data = json_decode($json);
foreach ($data as $obj) {
var_dump($obj->user);
}
