【图床】58同城客服

API接口：https://upload.58cdn.com.cn/json
上传参数：
Pic-Data => 图片Base64值
Pic-Encoding => base64
Pic-Path => /nowater/webim/big/
Pic-Size => 0*0
请求头：
Content-Type: application/json
Referer: https://ai.58.com/pc/
需要对返回的数据进行拼接处理，详见代码示例
图床无水印，定期删除

<?php

// 58同城图床接口
// By: Linuors

if ($_SERVER['REQUEST_METHOD'] === 'POST' && isset($_FILES['file'])) {
    $apiUrl = 'https://upload.58cdn.com.cn/json';
    $referer = 'https://ai.58.com/pc/';
    $file = $_FILES['file'];
    
    if ($file['error'] !== UPLOAD_ERR_OK) {
        http_response_code(400);
        echo json_encode(['error' => 'File upload error.']);
        exit;
    }

    $imgdata = base64_encode(file_get_contents($file['tmp_name']));
    $params = [
        'Pic-Data' => $imgdata,
        'Pic-Encoding' => 'base64',
        'Pic-Path' => '/nowater/webim/big/',
        'Pic-Size' => '0*0'
    ];

    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, $apiUrl);
    curl_setopt($ch, CURLOPT_POST, 1);
    curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($params));
    curl_setopt($ch, CURLOPT_HTTPHEADER, [
        'Content-Type: application/json',
        'Referer: ' . $referer,
    ]);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    $response = curl_exec($ch);
    curl_close($ch);

    if (strpos($response, 'n_v2') !== false) {
        $imgurl = 'https://pic' . rand(1, 8) . '.58cdn.com.cn/nowater/webim/big/' . $response;
        echo $imgurl;
    } else {
        http_response_code(500);
    }

} else {
    http_response_code(400);
    echo json_encode(['error' => 'No file uploaded.']);
}
?>