允许用户在输入中输入逗号分隔值并返回唯一项

Question

我正在将 PHP 与亚马逊的产品广告 API 结合使用，让用户在搜索表单中输入 ISBN 号并让它返回产品信息。

有没有办法让用户输入多个 ISBN 号码，用逗号分隔，并返回每个输入号码的产品信息？

这是我目前所拥有的：

//allow users to enter multiple ISBN, separated by a comma
$myValue = $_POST['isbnNum'];
$arrs = explode(", ", $myValue);

$similar = array(
    'Operation'     => 'ItemLookup',
    'IdType'        => 'ISBN',
    'ItemId'        => $myValue,
    'SearchIndex'   => 'Books',
    'ResponseGroup' => 'Medium'
    );

$result = $amazon->queryAmazon($similar);
$similar_products = $result->Items->Item;

//arrays
$aws_items = array();

//array counter
$i = 0;

foreach($similar_products as $si){
    $item_url = $si->DetailPageURL; //get its amazon url
    $img = $si->MediumImage->URL; //get the image url

    $title  = $si->ItemAttributes->Title;    //product title
    $isbn   = $si->ItemAttributes->ISBN;    //product title
    $price  = $si->OfferSummary->LowestNewPrice->FormattedPrice;     //product price
    $weight = $si->ItemAttributes->ItemDimensions->Weight;      //product weight

    //item array
    $item = [];
    $item['title']  = $title;
    $item['price']  = $price;
    $item['weight'] = $weight;
    $item['isbn']   = $isbn;

    //add decimal point two spaces from right of product dimensions
    $length = number_format(($si->ItemAttributes->ItemDimensions->Length/100),2);  //item length
    $width  = number_format(($si->ItemAttributes->ItemDimensions->Width/100),2);    //item width
    $height = number_format(($si->ItemAttributes->ItemDimensions->Height/100),2);  //item height

    //print HTML
    echo '<div class="isbn-item">';
        echo '<img src="' . $img . '" />';
        echo '<h2>' . $title . '</h2>';
        echo '<p>' . $item['isbn'] . '</p>';   //isbn
        /*echo '<p>' . $si->ItemAttributes->ListPrice->FormattedPrice . '</p>'; //item price*/
        echo '<p>' . $item['price'] . '</p>';
        echo '<p>' . $length . ' x ' . $width . ' x ' . $height . ' inches</p>';
        echo '<p>' . $weight . ' ounces</p>';
        echo '<input name="submit" type="submit" value="Add to Cart">';
    echo '</div>';

    //Increment the counter by 1
    $i++;
}

编辑：所以我在顶部添加了爆炸部分，现在我返回了多个项目。但是，在 HTML 中，由于我输出的是 $myValue，因此每个项目都输入了所有 ISBN 值，而不是与它们关联的值。我知道我需要访问 $arrs 数组（对吗？），但我不确定在哪里/如何。

编辑 2：为什么echo '<p>' . $arrs[$myValue] . '</p>'; 不起作用？

编辑 3：使用工作代码更新代码，将每本书的 ISBN 添加到相应的书。

Answer 1

$myValue 是一串 ISBN 对吗？

因此，$arrs[$myValue] 将不起作用，因为您需要访问具有整数索引的元素。

如果您将 for 循环更改为使用 $key=>$val 语法，您可以这样做：

foreach($similar_products as $index=>$si){   
   ...
        echo '<p>' . $arrs[$index] . '</p>';    //isbn
   ...
}

Answer 2

这是工作代码：

//allow users to enter multiple ISBN, separated by a comma
$myValue = $_POST['isbnNum'];
$arrs = explode(", ", $myValue);

$similar = array(
    'Operation'     => 'ItemLookup',
    'IdType'        => 'ISBN',
    'ItemId'        => $myValue,
    'SearchIndex'   => 'Books',
    'ResponseGroup' => 'Medium'
    );

$result = $amazon->queryAmazon($similar);
$similar_products = $result->Items->Item;

//arrays
$aws_items = array();

//array counter
$i = 0;

foreach($similar_products as $si){
    $item_url = $si->DetailPageURL; //get its amazon url
    $img = $si->MediumImage->URL; //get the image url

    $title  = $si->ItemAttributes->Title;    //product title
    $isbn   = $si->ItemAttributes->ISBN;    //product title
    $price  = $si->OfferSummary->LowestNewPrice->FormattedPrice;     //product price
    $weight = $si->ItemAttributes->ItemDimensions->Weight;      //product weight

    //item array
    $item = [];
    $item['title']  = $title;
    $item['price']  = $price;
    $item['weight'] = $weight;
    $item['isbn']   = $isbn;

    //add decimal point two spaces from right of product dimensions
    $length = number_format(($si->ItemAttributes->ItemDimensions->Length/100),2);  //item length
    $width  = number_format(($si->ItemAttributes->ItemDimensions->Width/100),2);    //item width
    $height = number_format(($si->ItemAttributes->ItemDimensions->Height/100),2);  //item height

    //print HTML
    echo '<div class="isbn-item">';
        echo '<img src="' . $img . '" />';
        echo '<h2>' . $title . '</h2>';
        echo '<p>' . $item['isbn'] . '</p>';   //isbn
        /*echo '<p>' . $si->ItemAttributes->ListPrice->FormattedPrice . '</p>'; //item price*/
        echo '<p>' . $item['price'] . '</p>';
        echo '<p>' . $length . ' x ' . $width . ' x ' . $height . ' inches</p>';
        echo '<p>' . $weight . ' ounces</p>';
        echo '<input name="submit" type="submit" value="Add to Cart">';
    echo '</div>';

    //Increment the counter by 1
    $i++;
}