每个循环的OpenCart 2.3产品审阅模式JSON-LD？

Question

我不是真正的编码员，我破产了，试图在网上商店赚钱。 我正在使用OpenCart 2.3.0.2开一个在线商店，并一直在尝试SEO在启动之前对其进行优化。 这次，我试图通过结构化数据标记对其进行改进。 由于我目前没有足够的资金购买模块，因此我自己动手做并学习东西的工作原理。

我正在尝试为OpenCart 2.3创建自己的产品模块架构，但是卡在“评论”部分。 JSON-LD已完全构建并经过测试。

我正在尝试使用JSON-LD进行标记，是从此页面和OpenCart论坛中学到的， 这是有问题的代码的片段（复习部分）：

"review": [
  <?php foreach($reviewss as $review) { ?>
  {
    "@type": "Review",
    "author": "<?php echo $review['author'];?>",
    "datePublished": "<?php echo $review['date_added'];?>",
    "description": "<?php echo $review['text'];?>",
    "name": "<?php echo $review['author'];?>",
    "reviewRating": {
    "@type": "Rating",
    "bestRating": "5",
    "ratingValue": "<?php echo $review['rating'];?>",
    "worstRating": "1"
    }
  } 
  <?php } ?>
]
}

产生输出：

  "review": [
  {
    "@type": "Review",
    "author": "A Parker",
    "datePublished": "16/12/2018",
    "description": "Wow! Product arrive yesterday and it's well packed. The product is well-designed.",
    "name": "A Parker",
    "reviewRating": {
    "@type": "Rating",
    "bestRating": "5",
    "ratingValue": "5",
    "worstRating": "1"
    }
  } #there should be a comma here after "}". 
  {
    "@type": "Review",
    "author": "David Lay",
    "datePublished": "15/12/2018",
    "description": "Great product! Works as advertised.",
    "name": "David Lay",
    "reviewRating": {
    "@type": "Rating",
    "bestRating": "5",
    "ratingValue": "5",
    "worstRating": "1"
    }
  } 
  ]
}


Here's the correct one. Tested using Google Structured Data Markup.


  "review": [
  {
    "@type": "Review",
    "author": "A Parker",
    "datePublished": "16/12/2018",
    "description": "Wow! Product arrive yesterday and it's well packed. The product is well-designed.",
    "name": "A Parker",
    "reviewRating": {
    "@type": "Rating",
    "bestRating": "5",
    "ratingValue": "5",
    "worstRating": "1"
    }
  },
  {
    "@type": "Review",
    "author": "David Lay",
    "datePublished": "15/12/2018",
    "description": "Great product! Works as advertised.",
    "name": "David Lay",
    "reviewRating": {
    "@type": "Rating",
    "bestRating": "5",
    "ratingValue": "5",
    "worstRating": "1"
    }
  } 
  ]
}

我不确定它到底叫什么，我认为-LOOP问题。 对于每个评论帖子，应使用逗号分隔该评论。 如果只有1条评论，则代码工作正常。

应该有条件插入逗号，例如，如果审阅数超过一个，则插入逗号，否则，则没有逗号。 然后，当然，最后一项应该没有逗号。

我一直在努力解决这个问题。 我不了解PHP，但是我在论坛上做了很多努力，讨论了循环以及if / then条件， foreach等问题，但是几乎听不懂。

我不确定如何问这个问题，也许是如何在OpenCart 2.3中针对JSON-LD架构循环产品评论？ 任何帮助是极大的赞赏。

Answer 1

为什么不使用json_encode() ？

JSON-LD 产品架构看起来完全不同：

<script type="application/ld+json">
{
  "@context": "http://schema.org",
  "@type": "Product",
  "aggregateRating": {
    "@type": "AggregateRating",
    "ratingValue": "3.5",
    "reviewCount": "11"
  },
  "description": "0.7 cubic feet countertop microwave. Has six preset cooking categories and convenience features like Add-A-Minute and Child Lock.",
  "name": "Kenmore White 17\" Microwave",
  "image": "kenmore-microwave-17in.jpg",
  "offers": {
    "@type": "Offer",
    "availability": "http://schema.org/InStock",
    "price": "55.00",
    "priceCurrency": "USD"
  },
  "review": [{
      "@type": "Review",
      "author": "Ellie",
      "datePublished": "2011-04-01",
      "description": "The lamp burned out and now I have to replace it.",
      "name": "Not a happy camper",
      "reviewRating": {
        "@type": "Rating",
        "bestRating": "5",
        "ratingValue": "1",
        "worstRating": "1"
      }
    }, {
      "@type": "Review",
      "author": "Lucas",
      "datePublished": "2011-03-25",
      "description": "Great microwave for the price. It is small and fits in my apartment.",
      "name": "Value purchase",
      "reviewRating": {
        "@type": "Rating",
        "bestRating": "5",
        "ratingValue": "4",
        "worstRating": "1"
      }
  }]
}
</script>

例如：

$data = (object) array(
    "@context" => "http://schema.org",
    "@type" => "Product",
    "aggregateRating" => (object) array(
        "@type": "AggregateRating",
        "ratingValue" => "3.5",
        "reviewCount" => "11"
    ),
    "description" => "0.7 cubic feet countertop microwave. Has six preset cooking categories and convenience features like Add-A-Minute and Child Lock.",
    "name" => "Kenmore White 17\" Microwave",
    "image"=> "kenmore-microwave-17in.jpg",
    "offers" => (object) array(
        "@type": "Offer",
        "availability": "http://schema.org/InStock",
        "price": "55.00",
        "priceCurrency": "USD"
    ),
    "review" => array()
);

foreach($reviews as $review) {
    array_push($data->review, $review);
}

echo '<script type="application/ld+json">';
echo json_encode($data);
echo '</script>';

另请参阅结构化数据测试工具 。

Answer 2

尝试这个

"review": [

  <?php foreach($reviews as $key => $review); { ?>
  {
    "@type": "Review",
    "author": "<?php echo $review['author'];?>",
    "datePublished": "<?php echo $review['date_added'];?>",
    "description": "<?php echo $review['text'];?>",
    "name": "<?php echo $review['author'];?>",
    "reviewRating": {
    "@type": "Rating",
    "bestRating": "5",
    "ratingValue": "<?php echo $review['rating'];?>",
    "worstRating": "1"
    }
  } 
  <?php if ($key != (count($reviews) - 1)){ ?>,<?php } ?><?php } ?>
]
}