Why is Guzzle POST showing this foreach error? - php

Question

I am using
"guzzlehttp/guzzle": "^6.3"
and I am running
$client = new \GuzzleHttp\Client([
'base_uri' => 'http://myapp.loc',
'headers' => [
'Content-Type' => 'application/json',
'Accept' => 'application/json',
]
]);
Then
$response = $client->post('/api/books', [
'json' => [
'bookId' => '123',
'title' => 'My Random Test Book',
'author' => 'Test Author'
]
]);
But I get
GuzzleHttp\Exception\ClientException : Client error: POST http://myapp.loc/api/books resulted in a 404 Not Found response:
Invalid argument supplied for foreach()
If I use the same route and data in Postman everything works, so the route and method is ok.
I have tried also
$response = $client->post('/api/books', [
'headers' => [
'Content-Type' => 'application/json',
'Accept' => 'application/json',
],
'body' => json_encode([
'bookId' => '123',
'title' => 'My Random Test Book',
'author' => 'Test Author'
])
]);
but it returns the same foreach error.
Any ideas on why Guzzle is showing this foreach error?
Digging a bit into this with Xdebug, the error arises from \GuzzleHttp\Psr7\Stream at the fread point
public function read($length)
{
...
$string = fread($this->stream, $length);

Answer 1

So the solution was to form the request like:
$response = $client->request('POST', 'http://myapp.loc/api/books', [
'form_params' => [
'parameters' => json_encode([[
'bookId' => '123',
'title' => 'My Random Test Book',
'author' => 'Test Author'
]])
]
]);