如何给php-xml总计数id - how to give php-xml total count id

how to give php-xml total count id

本文关键字：id php-xml | 更新日期: 2023-09-27

我对xml有问题，我正在使用php。对我来说需要总id。用这个代码获得所有产品的总id。

$xmlArray = array();
foreach($xml->Product as $product) { $xmlArray[] = array("productID" => (string)$product->Book); }
$total = count($xmlArray);

但对我来说，只需要php图书总id，我的php图书代码总id

$xmlArray2 = array();
foreach($xml->Product as $product2) { $xmlArray2[] = array("PHP" => (string)$product->Book); }
$total = count($xmlArray2);

但要给出所有产品的总id。所有代码：

$inPage = 10;
$currentRecord = 10;
$xml = new SimpleXMLElement('http://examplesite.com/xmlinfo.xml', 0, true);
$xmlArray = array();
foreach($xml->Product as $product) { $xmlArray[] = array("prouctID" => (string) $product->Book); }
$total = count($xmlArray);
$toplamPage = ceil($total / $inPage);
foreach($xml->Product as $value) {
        if($value->Book == "PHP") {
            $currentRecord += 1;
            if($currentRecord > ($page * $inPage) && $currentRecord < ($page * $inPage + $inPage)) {
                echo '<div class="BrandTab">';
                echo '<a href="product.php?productID=' . $value->UrunID . '"><img src="' . $value->ImageName . '" style="width:130px;height:200px;/></a>';
                echo '<article>';
                echo '<div class="ok"></div>';
                echo '<p>' . $value->ProductName . '</p>';
                echo '</article>';
                echo '</div>';
            }
        }
    }

使用DOM和XPath，可以直接使用DOMXpath:：evaluatate（）获取值。您还可以获取经过筛选的产品列表。与使用API函数相比，您可以避免许多循环和条件。

$xml = <<<'XML'
<Products>
  <Product>
    <Book>PHP</Book>
  <Product>
  </Product>
    <Book>JavaScript</Book>
  </Product>
</Products> 
XML;
$document = new DOMDocument();
$document->loadXml($xml);
$xpath = new DOMXpath($document);
var_dump($xpath->evaluate('count(//Product[normalize-space(Book) = "PHP"])'));
var_dump($xpath->evaluate('//Product[normalize-space(Book) = "PHP"]')->length);

输出

float(1)
int(1)

Xpath表达式

正在获取所有Product元素
//Product
。。。其中CCD_ 3元素等于CCD_
//Product[Book = 'PHP']
。。。在规范化空白之后
//Product[normalize-space(Book) = 'PHP']
。。。并以数字形式返回节点计数：
count(//Product[normalize-space(Book) = 'PHP'])

试试这个：

$xmlArray2 = array();
foreach($xml->Product as $product2) {
    if( (string)$product->Book == 'PHP' ) {
        $xmlArray2[] = array("PHP" => (string)$product->Book);
    }
}
$total = count($xmlArray2);