使用json和php从子数组中获取数据答案

【问题标题】：Get data from a sub-array with json and php使用json和php从子数组中获取数据
【发布时间】：2022-01-10 17:09:32
【问题描述】：

我想获取子数组中的“single_img”的值，但是找不到方法

$video ='{"msg":"OK","server_time":"2021-12-04 20:33:26","status":200,"result":[{"single_img":"8eybbqf5nnta6vcw.jpg","file_code":"vg1fkuag1tsa","splash_img":"8eybbqf5nnta6vcw.jpg","canplay":1,"views":"0","length":"2370","uploaded":"2021-12-04 13:28:35","title":"(Hands On Ed Class \/ 12.04.2021)"}]}';

$do = json_decode($video);

echo json_encode($do);
 
$result= json_encode($do->result);

echo json_encode($result->single_img);

感谢您的回答

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标签： php arrays json

【解决方案1】：

您可以将字符串解码为关联数组并访问您的密钥：

$video ='{"msg":"OK","server_time":"2021-12-04 20:33:26","status":200,"result":[{"single_img":"8eybbqf5nnta6vcw.jpg","file_code":"vg1fkuag1tsa","splash_img":"8eybbqf5nnta6vcw.jpg","canplay":1,"views":"0","length":"2370","uploaded":"2021-12-04 13:28:35","title":"(Hands On Ed Class \/ 12.04.2021)"}]}';

$do = json_decode($video, true);

var_dump($do['result'][0]['single_img']);

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【解决方案2】：

这也可以正常工作：

$video = '{"msg":"OK","server_time":"2021-12-04 20:33:26","status":200,"result":[{"single_img":"8eybbqf5nnta6vcw.jpg","file_code":"vg1fkuag1tsa","splash_img":"8eybbqf5nnta6vcw.jpg","canplay":1,"views":"0","length":"2370","uploaded":"2021-12-04 13:28:35","title":"(Hands On Ed Class \/ 12.04.2021)"}]}';

$do = json_decode($video);
$result = $do->result;
echo json_encode($result[0]->single_img);

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