Question

我想从服务器上的文件夹中获取所有图像，我使用ajax调用

files = glob('assets/img/daily/*'); // get all file names
$imageArr;
foreach ($files as $file) {
    $imageArr[] = $file;
}
//$imageJSON = ['img01' => $imgArr[0], 'img02' => $imgArr[1], 'img02' => $imgArr[2]];
//$jsonObj = json_encode($imageArr);
$jsonObj = json_encode($imageArr);

echo $jsonObj;

我可以回显看起来像这样的json编码

["assets\/img\/daily\/163.jpg","assets\/img\/daily\/168.jpg","assets\/img\/daily\/197.jpg","assets\/img\/daily\/223.jpg","assets\/img\/daily\/232.jpg","assets\/img\/daily\/260.jpg","assets\/img\/daily\/297.jpg","assets\/img\/daily\/30.jpg","assets\/img\/daily\/310.jpg","assets\/img\/daily\/333.jpg","assets\/img\/daily\/339.jpg","assets\/img\/daily\/411.jpg","assets\/img\/daily\/421.jpeg","assets\/img\/daily\/427.jpg","assets\/img\/daily\/46.jpg","assets\/img\/daily\/52.jpg","assets\/img\/daily\/86.jpg","assets\/img\/daily\/background.jpg","assets\/img\/daily\/booby.png","assets\/img\/daily\/booty.png"]

更新

这是我的Javascript / AJAX / HTML

<p id="raw"></p>
<br><br>
<p id="json"></p>
<script>
    var raw, json;
    raw = document.getElementById("raw");
    json = document.getElementById("json");
var http = new XMLHttpRequest();
            var url = "ajax.php";
            http.open("POST", url, true);
            http.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
            http.onreadystatechange = function () {
                if (http.readyState === 4 && http.status === 200) {
//                    alert(this.responseText);
                    var jsonObj = JSON.parse(this.responseText);
                    raw.textContent = this.responseText;
                    json.textContent = jsonObj;
                }
            };
            http.send();
</script>

我如何访问数据？我不能jsonObj.name，因为没有一个输出被命名？我收到的var jsonObj = JSON.parse(this.responseText)看起来像这样

assets/img/daily/30.jpg,assets/img/daily/46.jpg,assets/img/daily/background.jpg,assets/img/daily/booby.png,assets/img/daily/booty.png,assets/img/daily/chrome.png,assets/img/daily/default.png,assets/img/daily/defaults.png

Answer 1

但我的问题是，如果我尝试从这个JSON obj获取数据，如echo $ jsonObj [0]我将收到这个作为输出＆＃34; [＆＃34;

JSON是一个字符串。它被设计为通过HTTP传输，存储在文件等中。它不被设计为在不首先被解析的情况下被处理。您需要将其转换为数组才能有效地使用它。

...除非您没有，因为数据已经可用数组;你用它作为json_encode的输入。

只需使用$imageArr变量而不是$jsonObj

Javascript / AJAX JSON编码的数组 - 如何在收到数据时使用数据？

1 个答案: