Question

如何从api url获取数据（图像）？

Api结果：

info = { "title" : "aaaaa", "image" : "bbbbb" };

Api网址：

http://www.example.com/api

代码：

<?php
$ch = curl_init();
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_URL, 'http://www.example.com/api');
$result = curl_exec($ch);
curl_close($ch);
$obj = json_decode($result);
echo $result->image;
?>

Array
(
    [curlResult] => info = { "title" : "aaaaa", "image" : "bbbbb" };
    [info] => Array
        (
            [url] => http://127.0.0.1/api.txt
            [content_type] => text/plain
            [http_code] => 200
            [header_size] => 237
            [request_size] => 55
            [filetime] => -1
            [ssl_verify_result] => 0
            [redirect_count] => 0
            [total_time] => 0
            [namelookup_time] => 0
            [connect_time] => 0
            [pretransfer_time] => 0
            [size_upload] => 0
            [size_download] => 48
            [speed_download] => 48
            [speed_upload] => 0
            [download_content_length] => 48
            [upload_content_length] => 0
            [starttransfer_time] => 0
            [redirect_time] => 0
            [certinfo] => Array
                (
                )

            [primary_ip] => 127.0.0.1
            [primary_port] => 80
            [local_ip] => 127.0.0.1
            [local_port] => 61662
            [redirect_url] => 
        )

    [errno] => 0
    [error] => 
)

Answer 1

视图像是否为实际blob内容或url链接可能会改变显示图像的方式。

如果是内容，则需要获取MIME类型才能正确显示，以便设置正确的页眉。

如果是链接，请访问该网页。

Answer 2

在你的api中：

将整个图片内容读取为字符串。（的file_get_contents）
将其编码为base64字符串。（BASE64_ENCODE）
将其添加到返回结果中。（替换“image”=“bbbbb”）

这看起来：

$result = array(
    "title" => "aaaaa",
    "image" => "bbbbb"
);
$result["image"] = file_get_contents("path/to/your/image/file");
$result["image"] = base64_encode($result["image"]);
$result = json_encode($result);
header("Content-Type: application/json");
echo $result;

在您的代码中：

$ch = curl_init();
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_URL, 'http://www.example.com/api');
$result = curl_exec($ch);
curl_close($ch);
$obj = json_decode($result);
// Do it if you encoded image string
$image_string = base64_decode($obj->image);
// Create image from base 64 decoded string
$image = imagecreatefromstring($image_string);
// And save your image as desired type (png or jpeg)
imagepng($image, "path/to/save/your/image/as/png");

编辑：你能提供服务器端代码吗？您所使用的代码按预期工作在哪里？

如何从API获取数据 - php - curl

2 个答案: