PHP解析XML数据并绘制HTML表格答案

【问题标题】：PHP parsing XML data and draw HTML TablePHP解析XML数据并绘制HTML表格
【发布时间】：2021-11-15 16:33:09
【问题描述】：

我有一个案例，我需要解析如下所示的“产品规范”XML 样式文档（数据）：

    <Message>
    <EntityType>Document</EntityType>
    <ProductSETS>
      <Entity>
       <id>1</id>
       <Specification1>Human readable title 1</Specification1>
       <Specification2>Human readable title 2</Specification2>
       <Price>Product Price</Price>
       [...more elements of same row amount...]
      </Entity>
    
      <Entity>
       <id>100</id>
       <Specification1>Red</Specification1>
       <Specification2>Square</Specification2>
       <Price>8888</Price>
       [...more elements of same row amount...]
      </Entity>
    
      <Entity>
       <id>101</id>
       <Specification1>Blue</Specification1>
       <Specification2>Round</Specification2>
       <Price>9999</Price>
       [...more elements of same row amount...]
      </Entity>
    
    </ProductSETS>
    </Message>

简而言之，我需要在值得信赖的 PHP 的帮助下，打印一个包含 XML 数据的表格，例如：

_____________________________________________________________________
| ProductSET for ID 100                                             |
---------------------------------------------------------------------
| Human readable title 1                 |  Red                     |
| Human readable title 2                 |  Square                  |
| Product Price                          |  8888                    |
| Next element in human readable form    |  ID. 100 ELEMENT [...]   |
[   .... and loop until end of <Entity> <id>100</id>  ............. |
_____________________________________________________________________
| ProductSET for ID 101                                             |
---------------------------------------------------------------------
| Human readable title 1                 |  Blue                    |
| Human readable title 2                 |  Round                   |
| Product Price                          |  9999                    |
| Next element in human readable form    |  ID. 101 ELEMENT [...]   |
[   .... and loop until end of <Entity> <id>101</id>  ............. |
_____________________________________________________________________

请注意，xml 始终将第一个实体作为类似“标题”的条目，其中 1 用于映射产品规范标题的“人类可读”值并在“标题”实体之后显示实际的产品规格值（颜色、尺寸、价格等）

问题是我需要两种方法来显示带有来自 XML 数据的值的 HTML 表格：

列出所有（没有实体为 1，但仍然使用它的值）

foreach ($feed->ProductSETS->Entity) :
if(ProductSETS->Entity->id != "1"){
  <tr><th><? echo ProductSETS->Entity->[1]->Specification1 ?>:</th>
<td><? echo ProductSETS->Entity->[100]->Title->Value ?> (Red)</td> </tr>
  <tr><th><? echo ProductSETS->Entity->[1]->Specification2 ?>:</th>
<td><? echo ProductSETS->Entity->[100]->Title->Value ?> (Square)</td> </tr>

  <tr><th><? echo ProductSETS->Entity->[1]->Specification1 ?>:</th>
<td><? echo ProductSETS->Entity->[101]->Title->Value ?> (Blue)</td>
</tr>
  <tr><th><? echo ProductSETS->Entity->[1]->Specification2 ?>:</th>
<td><? echo ProductSETS->Entity->[101]->Title->Value ?> (Round)</td> </tr>
}
endforeach;

如果 $filter = "101" 仅针对产品 ID 101 绘制表格但仍使用来自 id 的数据的选择性列表。 1 显示单个 ID 101 产品的人类可读产品规格：

foreach ($feed->ProductSETS->Entity) :
  if(ProductSETS->Entity->id == "101"){
  <tr><th><? echo ProductSETS->Entity->[1]->Specification1 ?>:</th>
<td><? echo ProductSETS->Entity->[101]->Title->Value ?> (Blue)</td> </tr>
  <tr><th><? echo ProductSETS->Entity->[1]->Specification2 ?>:</th>
<td><? echo ProductSETS->Entity->[101]->Title->Value ?> (Round)</td> </tr>
  }else{ echo "No matching product search criteria"; }
endforeach;

我认为我的“解释技巧”是最好的，对于“故事”的长度感到抱歉，希望有人可以帮助我。

【问题讨论】：

标签： php html-table xml-parsing

【解决方案1】：

找到了解决方案。代码由Barand 编写，脚本执行以下操作：

解析具有多个实体条目的 XML 数据
使用第一个条目作为“标题”列（条目 ID 1）
在“可比较样式”水平 html 表中的列中相互输出条目
具有“过滤”模式，可以“比较”某些条目
仅修改第一个条目的值（以删除默认的“1”值）

脚本不会重新组织 HTML 表中的条目（行）（它们与 XML 数据的顺序相同）。

<?php
// Code writen by Barand - https://forums.phpfreaks.com/profile/3105-barand/
// Donate to Barand - https://www.paypal.me/baandrew - if you found this script usefull !
$xml = "
<Message>
    <EntityType>Document</EntityType>
    <ProductSETS>
      <Entity>
       <id>1</id>
       <sku>1</sku>
       <ean>1</ean>
       <Specification1>Name</Specification1>
       <Specification2>Color</Specification2>
       <Specification3>Type</Specification3>
       <Specification4>Manufacturer</Specification4>
       <Price>Product Price</Price>
      </Entity>
    
      <Entity>
       <id>100</id>
       <sku>prod-0001</sku>
       <ean>5901234123456</ean>
       <Specification1>Lorem ipsum</Specification1>
       <Specification2>Red</Specification2>
       <Specification3>Hybrid car</Specification3>
       <Specification4>Tesla</Specification4>
       <Price>10000</Price>
       </Entity>
    
      <Entity>
       <id>101</id>
       <sku>prod-0002</sku>
       <ean>5907171819916</ean>
       <Specification1>Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia</Specification1>
       <Specification2>Blue</Specification2>
       <Specification3>Diesel car</Specification3>
       <Specification4>Trabant</Specification4>
       <Price>5000</Price>
       </Entity>

      <Entity>
       <id>102</id>
       <sku>prod-0003</sku>
       <ean>6189192737718</ean>
       <Specification1>Ut enim ad minim veniam quis nostrud exercitation</Specification1>
       <Specification2>Black</Specification2>
       <Specification3>SUV</Specification3>
       <Specification4>Hummer</Specification4>
       <Price>1</Price>
       </Entity>
       
       
    </ProductSETS>
</Message>
";
$chosen = $_GET['choice'] ?? [];

$feed = simplexml_load_string($xml);
$heads = $prods = [];
$tdata = '';

if ($chosen) {
    $h = $feed->xpath('//Entity[id = 1]')[0];         // headings from entity #1
    $p = $feed->xpath('//Entity[id > 1]');            // products from rest of entities
    foreach ($h as $k=>$v) {
        $heads[$k] = (in_array($k, ['id','sku','ean'])) ? '' : (string)$h->$k;
        if (!isset($prods[$k])) {
            $prods[$k] = [ 'heading' => $heads[$k],
                           'specs'   => []
                         ];
        }
    }
    foreach ($p as $spec) {
        if (!in_array((string)$spec->id, $chosen)) continue;
        foreach ($spec as $k=>$s) {
            $prods[$k]['specs'][] = trim((string)$s);
        }
    }

    foreach ($prods as $k => $row) {
        if ($k=='id') continue;
        $tdata .= "<tr><th>{$row['heading']}</th>";
        $tdata .= '<td>' . join('</td><td>', $row['specs']) . "</td></tr>\n";
    }
}
/**
* build list of checkbox options for product selection
* 
* @param simplexmlobj $feed
*/
function productOptions($feed) 
{
    $prods = $feed->xpath('//Entity[id > 1]');
    $opts = '';
    foreach ($prods as $p) {
        $opts .= "&emsp;<label><input type='checkbox' name='choice[]' value='{$p->id}'> {$p->sku}</label>\n";
    }
    return $opts;
}
?>
<!DOCTYPE html>
<html lang='en'>
<head>
<title>Example</title>
<meta charset='utf-8'>
<link rel="stylesheet" href="https://www.w3schools.com/w3css/4/w3.css">
<style type='text/css'>
    td {
        width: 20%;
        padding: 8px;
    }
    th {
        width: 20%;
        padding: 8px;
        text-align: left;
        background-color: black;
        color: white;
    }
</style>
</head>
<body>
<div class="w3-container w3-blue-gray w3=padding">
    <h1>Product Comparison</h1>
</div>
<form class="w3-container w3-light-gray w3-padding-24">
    Select products to compare &emsp; <?=productOptions($feed)?>
    &emsp;
    <button class='w3-button w3-blue w3-round'>Compare</button>
</form>   
<div class="w3-continer w3-responsive w3-padding w3-margin-top">
    <table class="w3-table-all">
        <?= $tdata ?>
    </table>
</div>
</body>
</html>

结果是：

【讨论】：