Problem with curl for PHP runtime #584
Description
Bug report
- Vercel CLI Version:
39.0.4 - NodeJS Version:
18.x - vercel-php:
0.7.3 - URL: https://pln-api.vercel.app
- PHP info: https://pln-api.vercel.app/debug
- Repository:
No
Description
At the beginning of the deployment, using curl had no problems at all. But 1 day later, the API suddenly responded to an error with a message: “Call to undefined function curl_init()”. I tried several solutions in the problem report history of this repository with the same problem, but all of them did not work at all.
I tried the following:
- Changing the NodeJS version to
18.x,20.x,22.x - Changed the version of
vercel-phpinvercel.jsonwith several versions:0.7.3,0.6.2 - Changed the use of
curl_*tofile_get_contentswithstream_context_createcustomization using the same flow
From all the experiments above, the API now does not provide any response, only a blank page with HTTP 200 status code. Actually this is a simple project to create a RESTFull API by calling the API from another server, then returning the response back to the client. Here are some code on my project:
project-structure
├─ api
│ ├─ debug.php
│ └─ handler.php
├─ index.min.html
├─ openapi.min.json
└─ vercel.jsonvercel.json :
{
"functions": {
"api/**/*.php": {
"runtime": "vercel-php@0.6.2"
}
},
"routes": [
{ "src": "/", "dest": "/index.min.html" },
{ "src": "/oas", "dest": "/api/handler.php" },
{ "src": "/debug", "dest": "/api/debug.php" },
{ "src": "/api/(.*)", "dest": "/api/handler.php" }
]
}api/debug.php :
<?php phpinfo();api/handler.php:
<?php
// error_reporting(0);
// ...some code
try {
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_CUSTOMREQUEST, $method);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HEADER, false);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
$body = file_get_contents('php://input');
if (
$method === 'GET' &&
!empty($operation['requestBody']) &&
empty($body)
) {
$body = json_encode($_GET);
}
curl_setopt($ch, CURLOPT_POSTFIELDS, $body);
curl_setopt($ch, CURLOPT_HTTPHEADER, $forwardedHeaders);
$response = curl_exec($ch);
$httpCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
curl_close($ch);
$contentType = 'text/plain';
try {
json_decode($response, false, 512, JSON_THROW_ON_ERROR);
$contentType = 'application/json';
} catch (JsonException $e) {
$contentType = 'text/plain';
}
http_response_code($httpCode);
header("Content-Type: $contentType");
echo $response;
} catch (\Throwable $th) {
echo json_encode([
"code" => "500",
"message" => "There is a gateway server error, please try again in a while.",
"data" => $th->getMessage()
]);
}
Activity
f3l1x commentedon Jun 9, 2025
Hi, thank you for report, I will take a look.
qkqpttgf commentedon Jul 10, 2025
same.
a blank page with HTTP 200 status code.
nadar commentedon Jul 16, 2025
i would say its a duplication of #582
f3l1x commentedon Jul 18, 2025
Hi @decryptable and others. Please take a look at #582 (comment)
qkqpttgf commentedon Jul 28, 2025
@f3l1x I am sorry, but, 18/20/22 all blank page now.
f3l1x commentedon Jul 28, 2025
What do you mean? I have deployed many services and examples and they are OK. I need more info.
decryptable commentedon Jul 28, 2025
@f3l1x sorry for the late reply. after doing some experiments, I have another conclusion to the problem I am facing.
the third-party API server seems to reject API calls from certain country IPs, and only allow IP requests from servers with certain country providers.
In my case, this might be the main problem. Because after I tried to create an API server with another programming language with the same flow —like in the previous PHP code, this problem still occurred.
In conclusion, the API server that I called in fact always refused to provide a response if it was called from an IP that was not from a certain country.
Can I close this issue?
qkqpttgf commentedon Jul 29, 2025
my project url:
https://github.com/qkqpttgf/OneManager-php ,
deploy to vercel use:
https://scfonedrive.github.io/Vercel/Deploy.html , they works well for years.
but now, it is a blank page after deploy, nothing changed .
f3l1x commentedon Jul 29, 2025
@qkqpttgf This https://scfonedrive.github.io/Vercel/Deploy.html is some custom deployment? Do you have any vercel.json example for https://github.com/qkqpttgf/OneManager-php?
qkqpttgf commentedon Aug 1, 2025
sorry, out for work 2 days.
these 2 page written by me, and vercel.json is line 410 and 701 in Deploy.html,
after deploy, in vercel it like this: