API response header

[Villiamjit]

Hi,

I am using the CURL get request to get the link header for CURL response.

MY CURL Request

$curls = "https://{$shopdomain}/admin/api/2019-07/products.json?limit=1&access_token=".$access_token."";
$ch = curl_init();
curl_setopt($ch ,CURLOPT_URL, $curls);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_VERBOSE, 1);
curl_setopt($ch, CURLOPT_HEADER, 1);
$response = curl_exec($ch);
// Then, after your curl_exec call:
$header_size = curl_getinfo($ch, CURLINFO_HEADER_SIZE);
$header = substr($response, 0, $header_size);
$body = substr($response, $header_size);

But the URL in Response header is missing

Here is the header response

HTTP/1.1 200 OK
Date: Fri, 13 Sep 2019 06:26:21 GMT
Content-Type: application/json; charset=utf-8
Transfer-Encoding: chunked
Connection: keep-alive
Set-Cookie: __cfduid=df139750299ebfe8e7f405e7e209408e01568355981; expires=Sat, 12-Sep-20 06:26:21 GMT; path=/; domain=.myshopify.com; HttpOnly
X-Sorting-Hat-PodId: 88
X-Sorting-Hat-ShopId: 2031747161
Vary: Accept-Encoding
Referrer-Policy: origin-when-cross-origin
X-Frame-Options: DENY
X-ShopId: 2031747161
X-ShardId: 88
X-Stats-UserId: 
X-Stats-ApiClientId: 3084691
X-Stats-ApiPermissionId: 102802980953
HTTP_X_SHOPIFY_SHOP_API_CALL_LIMIT: 1/40
X-Shopify-Shop-Api-Call-Limit: 1/40
X-Shopify-API-Version: 2019-07
Link: ; rel="next"
Strict-Transport-Security: max-age=7889238
X-Request-Id: 119d8ce4-fd14-4f57-9b0e-9cd235c68cb2
X-Shopify-Stage: production
Content-Security-Policy: default-src 'self' data: blob: 'unsafe-inline' 'unsafe-eval' https://* shopify-pos://*; block-all-mixed-content; child-src 'self' https://* shopify-pos://*; connect-src 'self' wss://* https://*; frame-ancestors 'none'; img-src 'self' data: blob: https:; script-src https://cdn.shopify.com https://cdn.shopify.cn https://checkout.shopifycs.com https://js-agent.newrelic.com https://bam.nr-data.net https://dme0ih8comzn4.cloudfront.net https://api.stripe.com https://mpsnare.iesnare.com https://appcenter.intuit.com https://www.paypal.com https://js.braintreegateway.com https://c.paypal.com https://maps.googleapis.com https://www.google-analytics.com https://v.shopify.com https://widget.intercom.io https://js.intercomcdn.com 'self' 'unsafe-inline' 'unsafe-eval'; upgrade-insecure-requests; report-uri /csp-report?source%5Baction%5D=index&source%5Bapp%5D=Shopify&source%5Bcontroller%5D=admin%2Fproducts&source%5Bsection%5D=admin_api&source%5Buuid%5D=119d8ce4-fd14-4f57-9b0e-9cd235c68cb2
X-Content-Type-Options: nosniff
X-Download-Options: noopen
X-Permitted-Cross-Domain-Policies: none
X-XSS-Protection: 1; mode=block; report=/xss-report?source%5Baction%5D=index&source%5Bapp%5D=Shopify&source%5Bcontroller%5D=admin%2Fproducts&source%5Bsection%5D=admin_api&source%5Buuid%5D=119d8ce4-fd14-4f57-9b0e-9cd235c68cb2
X-Dc: gcp-us-central1,gcp-us-central1
NEL: {"report_to":"network-errors","max_age":2592000,"failure_fraction":0.01,"success_fraction":0.0001}
Report-To: {"group":"network-errors","max_age":2592000,"endpoints":[{"url":"https://monorail-edge.shopifycloud.com/v1/reports/nel/20190325/shopify"}]}
Expect-CT: max-age=604800, report-uri="https://report-uri.cloudflare.com/cdn-cgi/beacon/expect-ct"
Server: cloudflare
CF-RAY: 51580c918f12dbdf-LHR

Can anyone help me on this what I am doing wrong. How I get the link.

Thanks,
Villiam

[Busfox]

Hi @Villiamjit,

The response does indeed have a link header, but it looks like the actual url is not being parsed properly. How exactly are you logging the response headers? Can you try making the same request in the console and outputting the headers with '-i' appended to the end of the cURL request?

Let me know if that helps you see the next page url.

Cheers

[Jivan_Suhagiya]

Hi,
I've same issue, not getting Link in header. did you managed it?

[Villiamjit]

Hi Busfox,

I am just printing the result from the CURL on the page using print_r();.

Can you please help me own this how Can I add '-i' in my CURL PHP code that I posted above.

Thanks,
Villiam

[Jivan_Suhagiya]

Hi Villiamjit,
Actually I realized that its sending header link. Its not visible in browser front end due to <https element. 
If you inspect that Link you will find result.

[Villiamjit]

Hi Jivan,

Thanks for your help I can see the link in inspect.

I am getting this

<https://vsd22.myshopify.com/admin/api/2019-07/products.json?limit=1&page_info=eyJsYXN0X2lkIjoxMzkxOT...>; rel="next"

Can you please let me know how Can I represent this link in a graphic view in php. Like

<a href ="https://vsd22.myshopify.com/admin/api/2019-07/products.json?limit=1&page_info=eyJsYXN0X2lkIjoxMzkxOT...>

Regards,
Villiam

[Busfox]

Hey @Villiamjit,

You'll need to escape the angle brackets so that they don't become interpreted as html tags. Also, I highly recommend not including your access token as a url parameter unless it is a storefront access token. Instead, you should pass the access token in the X-Shopify-Request-Id request header value.

Cheers,

[Alex]

@Villiamjit I answered a similar question elsewhere today, try preg_match():

preg_match("/<(.*)>; rel={next}/", $link_str, $matches);

$matches[1] will in the above case be the next link. There's probably a better expression to use, but that works for me in PHP.

[Villiamjit]

Hi Alex,

It's not working for me maybe I got this in URL 'rel="next"' not rel={next}.

here is my Link <https://shopname/admin/api/2019-07/products.json?limit=1&page_info=pageinfokey>; rel="next".

Can you please check once. Its also not working if we have 

<https://shopname/admin/api/2019-07/products.json?limit=1&page_info=pagekey>; rel="previous", <https://shopname/admin/api/2019-07/products.json?limit=1&page_info=pageinfokey>; rel="next"

How we get previous and next link separate.

Thanks,
Villiam

[Busfox]

Hey @Villiamjit,

You're right! You'll need to change the regex @Alex shared to look for quotations instead of the curly brackets.