deepl-translate-multiple-texts

deep.php

<?php

use GuzzleHttp\Client as HttpClient;
use GuzzleHttp\Exception\GuzzleException;

require_once 'vendor/autoload.php';


$input = ["Hallo", "Welt"];

print_r($input);

try {
    $httpClient = new HttpClient([ 'base_uri' => 'https://api.deepl.com/v2/']);
    $response = $httpClient->request('POST', 'translate', [
        'form_params' => [
            'text' => $input,
            'source_lang' => "DE",
            'target_lang' => "EN",
            'split_sentences' => 0,
            'preserve_formatting' => 0,
            'auth_key' => "***"
        ],
    ]);

    $json = $response->getBody()->getContents();
    $result = json_decode($json, true);
    $output = array_column($result['translations'], 'text');

    print_r($output);
} catch (GuzzleException $e) {
    echo $e->getMessage();
}

Expected

Array
(
    [0] => Hallo
    [1] => Welt
)
Array
(
    [0] => Hello
    [1] => world
)

Actual

Array
(
    [0] => Hallo
    [1] => Welt
)
Client error: `POST https://api.deepl.com/v2/translate` resulted in a `400 Bad Request` response:
{"message":"Parameter 'text' not specified."}

Should be "text=Hallo&text=Welt"
look "following example illustrates how to send three texts to be translated at once:"

Its probably too late but if someone needs solution - json_encode should be used on array:
Example:

  'form_params' => [
            'auth_key' => '***',
            'text' =>  json_encode($input),
            'source_lang' => "EN",
            'target_lang' => "DE",
            'split_sentences' => 0,
            'preserve_formatting' => 0,
        ],

and to get results in format you wanted:

  $json = $response->getBody()->getContents();
  $result = json_decode($json, true);
  $output = array_column($result['translations'], 'text');
  $expectedOutput = json_decode($output[0]);

@yemanjo thank you very much - with json it works :)