Mixing
Q&A: How to get POST variables with PHP on Alibaba Cloud Function Compute service
I played around with the PHP 7.2 runtime and HTTP trigger on Alibaba Cloud Function Compute. The basic example in the documentation is the following:
<? php
use RingCentralPsr7Response;
function handler($request, $context): Response{
/*
$body = $request->getBody()->getContents();
$queries = $request->getQueryParams();
$method = $request->getMethod();
$headers = $request->getHeaders();
$path = $request->getAttribute("path");
$requestURI = $request->getAttribute("requestURI");
$clientIP = $request->getAttribute("clientIP");
*/
return new Response(
200,
array(
"custom_header1" => "v1"
),
"hello world"
);
}
This works quite well. It's easy to get the query parameters from an URL. But the body content is only available in a whole string with
$request->getBody()->getContents();
Although the documentation says that the $request parameter follows the PSR-7 HTTP Message standard, it is not possible to use $request->getParsedBody() to deliver the values submitted by POST method. It didn't work as expected - the result remains empty.
The reason is the underlying technology. Alibaba Cloud Function Compute makes use of the event-driven React PHP library to handle the requests (you can check this by analyzing the $request object). So the $_POST array is empty and there is no "easy way to get POST data".
Luckily, Alibaba's Function Compute handler provides the body content by $request->getBody()->getContents(); as a string like
"bar=lala&foo=bar"
So a solution seems easiser than thought at the beginning, you can e.g. use PHP's own parse_str() function:
$data = ;
$body = $request->getBody()->getContents();
parse_str($body,$data);
If you place this snippet in the handler function, the POST variables are stored in the $data array and ready for further processing.
Hope that this helps somebody who asked the same questions than I. :-)
Kind regards,
Ralf
php reactphp alibaba-cloud alibaba-cloud-function-compute
asked Nov 19 '18 at 20:14
Ralf GeschkeRalf Geschke
11
add a comment |
I played around with the PHP 7.2 runtime and HTTP trigger on Alibaba Cloud Function Compute. The basic example in the documentation is the following:
<? php
use RingCentralPsr7Response;
function handler($request, $context): Response{
/*
$body = $request->getBody()->getContents();
$queries = $request->getQueryParams();
$method = $request->getMethod();
$headers = $request->getHeaders();
$path = $request->getAttribute("path");
$requestURI = $request->getAttribute("requestURI");
$clientIP = $request->getAttribute("clientIP");
*/
return new Response(
200,
array(
"custom_header1" => "v1"
),
"hello world"
);
}
This works quite well. It's easy to get the query parameters from an URL. But the body content is only available in a whole string with
$request->getBody()->getContents();
Although the documentation says that the $request parameter follows the PSR-7 HTTP Message standard, it is not possible to use $request->getParsedBody() to deliver the values submitted by POST method. It didn't work as expected - the result remains empty.
The reason is the underlying technology. Alibaba Cloud Function Compute makes use of the event-driven React PHP library to handle the requests (you can check this by analyzing the $request object). So the $_POST array is empty and there is no "easy way to get POST data".
Luckily, Alibaba's Function Compute handler provides the body content by $request->getBody()->getContents(); as a string like
"bar=lala&foo=bar"
So a solution seems easiser than thought at the beginning, you can e.g. use PHP's own parse_str() function:
$data = ;
$body = $request->getBody()->getContents();
parse_str($body,$data);
If you place this snippet in the handler function, the POST variables are stored in the $data array and ready for further processing.
Hope that this helps somebody who asked the same questions than I. :-)
Kind regards,
Ralf
php reactphp alibaba-cloud alibaba-cloud-function-compute
asked Nov 19 '18 at 20:14
Ralf GeschkeRalf Geschke
11
add a comment |
I played around with the PHP 7.2 runtime and HTTP trigger on Alibaba Cloud Function Compute. The basic example in the documentation is the following:
<? php
use RingCentralPsr7Response;
function handler($request, $context): Response{
/*
$body = $request->getBody()->getContents();
$queries = $request->getQueryParams();
$method = $request->getMethod();
$headers = $request->getHeaders();
$path = $request->getAttribute("path");
$requestURI = $request->getAttribute("requestURI");
$clientIP = $request->getAttribute("clientIP");
*/
return new Response(
200,
array(
"custom_header1" => "v1"
),
"hello world"
);
}
This works quite well. It's easy to get the query parameters from an URL. But the body content is only available in a whole string with
$request->getBody()->getContents();
Although the documentation says that the $request parameter follows the PSR-7 HTTP Message standard, it is not possible to use $request->getParsedBody() to deliver the values submitted by POST method. It didn't work as expected - the result remains empty.
The reason is the underlying technology. Alibaba Cloud Function Compute makes use of the event-driven React PHP library to handle the requests (you can check this by analyzing the $request object). So the $_POST array is empty and there is no "easy way to get POST data".
Luckily, Alibaba's Function Compute handler provides the body content by $request->getBody()->getContents(); as a string like
"bar=lala&foo=bar"
So a solution seems easiser than thought at the beginning, you can e.g. use PHP's own parse_str() function:
$data = ;
$body = $request->getBody()->getContents();
parse_str($body,$data);
If you place this snippet in the handler function, the POST variables are stored in the $data array and ready for further processing.
Hope that this helps somebody who asked the same questions than I. :-)
Kind regards,
Ralf
php reactphp alibaba-cloud alibaba-cloud-function-compute
asked Nov 19 '18 at 20:14
Ralf GeschkeRalf Geschke
11
I played around with the PHP 7.2 runtime and HTTP trigger on Alibaba Cloud Function Compute. The basic example in the documentation is the following:
<? php
use RingCentralPsr7Response;
function handler($request, $context): Response{
/*
$body = $request->getBody()->getContents();
$queries = $request->getQueryParams();
$method = $request->getMethod();
$headers = $request->getHeaders();
$path = $request->getAttribute("path");
$requestURI = $request->getAttribute("requestURI");
$clientIP = $request->getAttribute("clientIP");
*/
return new Response(
200,
array(
"custom_header1" => "v1"
),
"hello world"
);
}
This works quite well. It's easy to get the query parameters from an URL. But the body content is only available in a whole string with
$request->getBody()->getContents();
Although the documentation says that the $request parameter follows the PSR-7 HTTP Message standard, it is not possible to use $request->getParsedBody() to deliver the values submitted by POST method. It didn't work as expected - the result remains empty.
The reason is the underlying technology. Alibaba Cloud Function Compute makes use of the event-driven React PHP library to handle the requests (you can check this by analyzing the $request object). So the $_POST array is empty and there is no "easy way to get POST data".
Luckily, Alibaba's Function Compute handler provides the body content by $request->getBody()->getContents(); as a string like
"bar=lala&foo=bar"
So a solution seems easiser than thought at the beginning, you can e.g. use PHP's own parse_str() function:
$data = ;
$body = $request->getBody()->getContents();
parse_str($body,$data);
If you place this snippet in the handler function, the POST variables are stored in the $data array and ready for further processing.
Hope that this helps somebody who asked the same questions than I. :-)
Kind regards,
Ralf
php reactphp alibaba-cloud alibaba-cloud-function-compute
php reactphp alibaba-cloud alibaba-cloud-function-compute
asked Nov 19 '18 at 20:14
Ralf GeschkeRalf Geschke
11
asked Nov 19 '18 at 20:14
Ralf GeschkeRalf Geschke
11
asked Nov 19 '18 at 20:14
Ralf GeschkeRalf Geschke
11
asked Nov 19 '18 at 20:14
Ralf GeschkeRalf Geschke
11
asked Nov 19 '18 at 20:14
Ralf GeschkeRalf Geschke
11
11
add a comment |
add a comment |
2 Answers
2
active
oldest
votes
As you can see in the documentation you need to add a RequestBodyParserMiddleware as middleware to get a parsed PSR-7 request. It seems you didn't do that.
Also keep in mind that only the Content-Types: application/x-www-form-urlencoded and multipart/form-data are supported here. So make sure the client need to send these headers so the request can be parsed. If it's another Content-Type you need to use another middleware.
See: https://github.com/reactphp/http#requestbodyparsermiddleware for more information.
I hope this helps!
answered Nov 20 '18 at 14:31
legionthlegionth
363
Thanks for your answer, please have a look at my comment regarding the Alibaba Cloud runtime environment. Kind regards, Ralf
– Ralf Geschke
Nov 21 '18 at 12:47
add a comment |
@legionth: I apologize that I didn't use the comment feature here, but my answer is too long. :-)
Thanks a lot for your comments - the usage of RequestBodyParserMiddleware is a great solution if you can control the server code. But in the context of Alibaba Cloud Function Compute service this seems not possible. I tried to find out more information about the invocation process - here are my results:
Function Compute makes use of the Docker image defined in https://github.com/aliyun/fc-docker/blob/master/php7.2/run/Dockerfile .
In the build process they download a PHP runtime environment from https://my-fc-testt.oss-cn-shanghai.aliyuncs.com/php7.2.tgz . (I didn't find this on GitHub, but the code is public downloadable.)
A shell script
start_server.shstarts a PHP-CGI binary and runs a PHP scriptserver.php.
In server.php a ReactHttpServer is started by:
$server = new Server(function (ServerRequestInterface $request) {
[...]
});
[...]
$socket = new ReactSocketServer(sprintf('0.0.0.0:%s', $port), $loop);
$server->listen($socket);
$loop->run();
As seen in the Function Compute documentation (& example of FC console), I can only use two functions:
/*
if you open the initializer feature, please implement the initializer function, as below:
*/
function initializer($context) {
}
and the handler function you can find in my first post.
Maybe Alibaba will extend the PHP runtime in future to make it possible to use a custom middleware, but currently I didn't find a way to do this.
Thanks again & kind regards,
Ralf
answered Nov 21 '18 at 12:45
Ralf GeschkeRalf Geschke
11
add a comment |
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2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
As you can see in the documentation you need to add a RequestBodyParserMiddleware as middleware to get a parsed PSR-7 request. It seems you didn't do that.
Also keep in mind that only the Content-Types: application/x-www-form-urlencoded and multipart/form-data are supported here. So make sure the client need to send these headers so the request can be parsed. If it's another Content-Type you need to use another middleware.
See: https://github.com/reactphp/http#requestbodyparsermiddleware for more information.
I hope this helps!
answered Nov 20 '18 at 14:31
legionthlegionth
363
Thanks for your answer, please have a look at my comment regarding the Alibaba Cloud runtime environment. Kind regards, Ralf
– Ralf Geschke
Nov 21 '18 at 12:47
add a comment |
As you can see in the documentation you need to add a RequestBodyParserMiddleware as middleware to get a parsed PSR-7 request. It seems you didn't do that.
Also keep in mind that only the Content-Types: application/x-www-form-urlencoded and multipart/form-data are supported here. So make sure the client need to send these headers so the request can be parsed. If it's another Content-Type you need to use another middleware.
See: https://github.com/reactphp/http#requestbodyparsermiddleware for more information.
I hope this helps!
answered Nov 20 '18 at 14:31
legionthlegionth
363
Thanks for your answer, please have a look at my comment regarding the Alibaba Cloud runtime environment. Kind regards, Ralf
– Ralf Geschke
Nov 21 '18 at 12:47
add a comment |
As you can see in the documentation you need to add a RequestBodyParserMiddleware as middleware to get a parsed PSR-7 request. It seems you didn't do that.
Also keep in mind that only the Content-Types: application/x-www-form-urlencoded and multipart/form-data are supported here. So make sure the client need to send these headers so the request can be parsed. If it's another Content-Type you need to use another middleware.
See: https://github.com/reactphp/http#requestbodyparsermiddleware for more information.
I hope this helps!
answered Nov 20 '18 at 14:31
legionthlegionth
363
As you can see in the documentation you need to add a RequestBodyParserMiddleware as middleware to get a parsed PSR-7 request. It seems you didn't do that.
Also keep in mind that only the Content-Types: application/x-www-form-urlencoded and multipart/form-data are supported here. So make sure the client need to send these headers so the request can be parsed. If it's another Content-Type you need to use another middleware.
See: https://github.com/reactphp/http#requestbodyparsermiddleware for more information.
I hope this helps!
answered Nov 20 '18 at 14:31
legionthlegionth
363
answered Nov 20 '18 at 14:31
legionthlegionth
363
answered Nov 20 '18 at 14:31
legionthlegionth
363
answered Nov 20 '18 at 14:31
legionthlegionth
363
363
Thanks for your answer, please have a look at my comment regarding the Alibaba Cloud runtime environment. Kind regards, Ralf
– Ralf Geschke
Nov 21 '18 at 12:47
add a comment |
Thanks for your answer, please have a look at my comment regarding the Alibaba Cloud runtime environment. Kind regards, Ralf
– Ralf Geschke
Nov 21 '18 at 12:47
Thanks for your answer, please have a look at my comment regarding the Alibaba Cloud runtime environment. Kind regards, Ralf
– Ralf Geschke
Nov 21 '18 at 12:47
Thanks for your answer, please have a look at my comment regarding the Alibaba Cloud runtime environment. Kind regards, Ralf
– Ralf Geschke
Nov 21 '18 at 12:47
add a comment |
@legionth: I apologize that I didn't use the comment feature here, but my answer is too long. :-)
Thanks a lot for your comments - the usage of RequestBodyParserMiddleware is a great solution if you can control the server code. But in the context of Alibaba Cloud Function Compute service this seems not possible. I tried to find out more information about the invocation process - here are my results:
Function Compute makes use of the Docker image defined in https://github.com/aliyun/fc-docker/blob/master/php7.2/run/Dockerfile .
In the build process they download a PHP runtime environment from https://my-fc-testt.oss-cn-shanghai.aliyuncs.com/php7.2.tgz . (I didn't find this on GitHub, but the code is public downloadable.)
A shell script
start_server.shstarts a PHP-CGI binary and runs a PHP scriptserver.php.
In server.php a ReactHttpServer is started by:
$server = new Server(function (ServerRequestInterface $request) {
[...]
});
[...]
$socket = new ReactSocketServer(sprintf('0.0.0.0:%s', $port), $loop);
$server->listen($socket);
$loop->run();
As seen in the Function Compute documentation (& example of FC console), I can only use two functions:
/*
if you open the initializer feature, please implement the initializer function, as below:
*/
function initializer($context) {
}
and the handler function you can find in my first post.
Maybe Alibaba will extend the PHP runtime in future to make it possible to use a custom middleware, but currently I didn't find a way to do this.
Thanks again & kind regards,
Ralf
answered Nov 21 '18 at 12:45
Ralf GeschkeRalf Geschke
11
add a comment |
@legionth: I apologize that I didn't use the comment feature here, but my answer is too long. :-)
Thanks a lot for your comments - the usage of RequestBodyParserMiddleware is a great solution if you can control the server code. But in the context of Alibaba Cloud Function Compute service this seems not possible. I tried to find out more information about the invocation process - here are my results:
Function Compute makes use of the Docker image defined in https://github.com/aliyun/fc-docker/blob/master/php7.2/run/Dockerfile .
In the build process they download a PHP runtime environment from https://my-fc-testt.oss-cn-shanghai.aliyuncs.com/php7.2.tgz . (I didn't find this on GitHub, but the code is public downloadable.)
A shell script
start_server.shstarts a PHP-CGI binary and runs a PHP scriptserver.php.
In server.php a ReactHttpServer is started by:
$server = new Server(function (ServerRequestInterface $request) {
[...]
});
[...]
$socket = new ReactSocketServer(sprintf('0.0.0.0:%s', $port), $loop);
$server->listen($socket);
$loop->run();
As seen in the Function Compute documentation (& example of FC console), I can only use two functions:
/*
if you open the initializer feature, please implement the initializer function, as below:
*/
function initializer($context) {
}
and the handler function you can find in my first post.
Maybe Alibaba will extend the PHP runtime in future to make it possible to use a custom middleware, but currently I didn't find a way to do this.
Thanks again & kind regards,
Ralf
answered Nov 21 '18 at 12:45
Ralf GeschkeRalf Geschke
11
add a comment |
@legionth: I apologize that I didn't use the comment feature here, but my answer is too long. :-)
Thanks a lot for your comments - the usage of RequestBodyParserMiddleware is a great solution if you can control the server code. But in the context of Alibaba Cloud Function Compute service this seems not possible. I tried to find out more information about the invocation process - here are my results:
Function Compute makes use of the Docker image defined in https://github.com/aliyun/fc-docker/blob/master/php7.2/run/Dockerfile .
In the build process they download a PHP runtime environment from https://my-fc-testt.oss-cn-shanghai.aliyuncs.com/php7.2.tgz . (I didn't find this on GitHub, but the code is public downloadable.)
A shell script
start_server.shstarts a PHP-CGI binary and runs a PHP scriptserver.php.
In server.php a ReactHttpServer is started by:
$server = new Server(function (ServerRequestInterface $request) {
[...]
});
[...]
$socket = new ReactSocketServer(sprintf('0.0.0.0:%s', $port), $loop);
$server->listen($socket);
$loop->run();
As seen in the Function Compute documentation (& example of FC console), I can only use two functions:
/*
if you open the initializer feature, please implement the initializer function, as below:
*/
function initializer($context) {
}
and the handler function you can find in my first post.
Maybe Alibaba will extend the PHP runtime in future to make it possible to use a custom middleware, but currently I didn't find a way to do this.
Thanks again & kind regards,
Ralf
answered Nov 21 '18 at 12:45
Ralf GeschkeRalf Geschke
11
@legionth: I apologize that I didn't use the comment feature here, but my answer is too long. :-)
Thanks a lot for your comments - the usage of RequestBodyParserMiddleware is a great solution if you can control the server code. But in the context of Alibaba Cloud Function Compute service this seems not possible. I tried to find out more information about the invocation process - here are my results:
Function Compute makes use of the Docker image defined in https://github.com/aliyun/fc-docker/blob/master/php7.2/run/Dockerfile .
In the build process they download a PHP runtime environment from https://my-fc-testt.oss-cn-shanghai.aliyuncs.com/php7.2.tgz . (I didn't find this on GitHub, but the code is public downloadable.)
A shell script
start_server.shstarts a PHP-CGI binary and runs a PHP scriptserver.php.
In server.php a ReactHttpServer is started by:
$server = new Server(function (ServerRequestInterface $request) {
[...]
});
[...]
$socket = new ReactSocketServer(sprintf('0.0.0.0:%s', $port), $loop);
$server->listen($socket);
$loop->run();
As seen in the Function Compute documentation (& example of FC console), I can only use two functions:
/*
if you open the initializer feature, please implement the initializer function, as below:
*/
function initializer($context) {
}
and the handler function you can find in my first post.
Maybe Alibaba will extend the PHP runtime in future to make it possible to use a custom middleware, but currently I didn't find a way to do this.
Thanks again & kind regards,
Ralf
answered Nov 21 '18 at 12:45
Ralf GeschkeRalf Geschke
11
answered Nov 21 '18 at 12:45
Ralf GeschkeRalf Geschke
11
answered Nov 21 '18 at 12:45
Ralf GeschkeRalf Geschke
11
answered Nov 21 '18 at 12:45
Ralf GeschkeRalf Geschke
11
11
add a comment |
add a comment |
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