Question

目前，我可以按照shopify的API限制（每次调用250个产品）来获取并回显。我进行了一些研究，发现我需要对商店中的产品总数[5000产品/每页250产品= 20页]进行分页。我想在shopify中获得所有产品所以我试图解决。但我无法获得所有产品。结果始终是“错误.....”。什么是问题？

    $pages = ceil($products_cnt->count/250); // Count products / 250 
    for($i = 0; $i < $pages; $i++){
        $api_url = 'https://apikey:password@store.myshopify.com';
        $get_url = $api_url . '/admin/products.json?limit=250&page='.($i+1);
        $products_content = @file_get_contents( $get_url );
        if (!empty($products_all)) {
            print_r('ok');
        } else {
            print_r('error.....');
        }
        $products_json = json_decode( $products_content, true );
        $products = $products_json['products'];

Answer 1

我想您对Shopify API rate limit有疑问。但是要确保需要检查Shopify API的响应。对于HTTP请求，最好使用curl或某些HTTP客户端程序包，例如Guzzle。

尝试使用以下代码代替@file_get_contents($get_url)：

  $ch = curl_init();

  curl_setopt($ch,CURLOPT_URL, $url);
  curl_setopt($ch,CURLOPT_RETURNTRANSFER, 1);
  curl_setopt($ch,CURLOPT_CONNECTTIMEOUT, 30);

  $products_content = curl_exec($ch);

  if(curl_errno($ch)){ 
     print_r('Curl error.' . curl_error($ch));
  }
  
  $status_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);

  if(in_array($status_code, [200, 201])){
     print_r('ok');
  } else {
     print_r(
          'Shopify API error. ' .
          'HTTP Code: ' . curl_getinfo($ch, CURLINFO_HTTP_CODE) . '; '
          'Error:     ' . $products_content
     );
  }
  curl_close($ch);

Answer 2

您要使用的分页方法已被弃用。 Shopify从API版本2019-07引入了新的基于游标的分页。要了解有关基于游标的分页的更多信息，请前往Shopify Docs for Cursor based Pagination。最好使用一些提供速率限制等功能的PHP库。但是，使用cURL的示例实现如下所示。检查代码注释以获取详细信息。

<?php
// username and password for API
$username = "";
$password = "";

$nextPage = NULL;

$curl = curl_init();

// set result limit and Basic auth

curl_setopt_array(
    $curl,
    array(
        CURLOPT_URL => "https://store-name.myshopify.com/admin/api/2020-07/products.json?limit=50",
        CURLOPT_RETURNTRANSFER => true,
        CURLOPT_ENCODING => "",
        CURLOPT_MAXREDIRS => 10,
        CURLOPT_TIMEOUT => 0,
        CURLOPT_FOLLOWLOCATION => true,
        CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
        CURLOPT_CUSTOMREQUEST => "GET",
        CURLOPT_USERPWD => $username . ":" . $password

    )
);

// call back function to parse Headers and get Next Page Link
curl_setopt(
    $curl,
    CURLOPT_HEADERFUNCTION,
    function($curl, $header) use (&$nextPage) {
        $len = strlen($header);
        $header = explode(':', $header, 2);

        if (count($header) < 2) // ignore invalid headers
        return $len;

        if (trim($header[0]) === "Link" && strpos($header[1], 'next') !== false) {
            $links = explode(',', $header[1], 2);

            $link = count($links) === 2 ? $links[1] : $links[0];
            if (preg_match('/<(.*?)>/', $link, $match) === 1) $nextPage = $match[1];
        }

        return $len;
    }
);

// First request

$response = curl_exec($curl);

if (curl_errno($curl)) {
    $error_msg = curl_error($curl);
    print_r($error_msg);
}
$parsedResponse = json_decode($response);
$result = $parsedResponse->products;

// generate new requests till next page is available

while ($nextPage !== NULL) {
    curl_setopt($curl, CURLOPT_URL, $nextPage);
    $parsedResponse->products = [];
    $nextPage = NULL;

    $response = curl_exec($curl);
    $parsedResponse = json_decode($response);

    if (curl_errno($curl)) {
        $error_msg = curl_error($curl);
    } else {
        $result = array_merge($result, $parsedResponse->products);
        sleep(2);
    }
};
echo "Products Count: ";
echo count($result);
curl_close($curl);

Geoffrey的响应标头解析功能

使用shopify的API和PHP在shopify商店中获取所有产品

2 个答案: