PHP, google-api-vision and CURL

[gc75]

HI,

My script for API VISION no longer works for me. Everything worked until last week.
I use PHP and CURL, and I get error Status Code 400.

This is my code:

$url="https://vision.googleapis.com/v1/images:annotate?key=$apikey";
                        $detection_type="WEB_DETECTION";
                        
                             // base64 encode image
                             //   $image=file_get_contents($url_immagine);
                             //   $image_base64=base64_encode($image);
                        
                                $json_request='{
                                          "requests": [
                                            {
                                            "image": {
                                                "content":"'.$url_jpg.'"
                                              },
                                              "features": [
                                                  {
                                                      "type": "'.$detection_type.'",
                                                      "maxResults": 400
                                                  }
                                              ]
                                            }
                                        ]
                                    }';
                        
                                $curl=curl_init();
                                curl_setopt($curl, CURLOPT_URL, $url);
                                curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
                                curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);
                                curl_setopt($curl, CURLOPT_HTTPHEADER, array("Content-type: application/json"));
                                curl_setopt($curl, CURLOPT_POST, true);
                                curl_setopt($curl, CURLOPT_POSTFIELDS, $json_request);
                                $json_response=curl_exec($curl);
                                $status=curl_getinfo($curl, CURLINFO_HTTP_CODE);
                                $curl_errno= curl_errno($curl);
                                curl_close($curl);
                        
                                if ( $status!=200 ) {
                                    die("Status code: $status <br> $curl_errno" );
                                }

Is the API url still valid? What has changed?