php获取xml内部标记内容

我需要执行一个API，它的响应是XML。 但是XML值在XML标记中

比如说

<example>
 <item productid = "1" productname = "xxx" cost = "5.3"/>
 <item productid = "2" productname = "yyy" cost = "4.0"/>
 <item productid = "3" productname = "zzz" cost = "1.75"/>
</example>

Thanx

XPath:

不是强制性的，您可以只获取所有子节点并循环遍历它们，但是XPath在现实场景中（您有多个级别的XML节点）更通用，并且可读性更高

<?php
$xmlStr = <<<END
<example>
 <item productid = "1" productname = "xxx" cost = "5.3"/>
 <item productid = "2" productname = "yyy" cost = "4.0"/>
 <item productid = "3" productname = "zzz" cost = "1.75"/>
</example>
END;
$xml = new SimpleXMLElement($xmlStr); 

$items = $xml->xpath("//example/item");

$out = array();
foreach($items as $x) {
    $out [] = $x->attributes();
} 

---

或者您可以使用DomeElement

$doc = new DOMDocument();
$doc->load('domexample.xml');
$elements = $doc->getElementsByTagName('item');

$x = 0;
foreach($elements as $element)
{
    $results[$x]['productid'] = $element->getAttribute('productid');
    $results[$x]['productname'] = $element->getAttribute('productname');
    $results[$x]['cost'] = $element->getAttribute('cost');
    $x++;
}

children（）作为$item）
{
$prodidz[]=$item->attributes（）->productid；
$prodnamez[]=$item->attributes（）->productname；
$costz[]=$item->attributes（）->成本；
}
?>

$doc = new DOMDocument();
$doc->load('domexample.xml');
$elements = $doc->getElementsByTagName('item');

$x = 0;
foreach($elements as $element)
{
    $results[$x]['productid'] = $element->getAttribute('productid');
    $results[$x]['productname'] = $element->getAttribute('productname');
    $results[$x]['cost'] = $element->getAttribute('cost');
    $x++;
}

<?php

$file = "filename.xml"; 
$example = simplexml_load_file($file) or die("Error: Can't Open File");

$prodidz = array();
$prodnamez = array();
$costz = array();

foreach ($example->children() as $item)
{
 $prodidz[] = $item->attributes()->productid;
 $prodnamez[] = $item->attributes()->productname;
 $costz[] = $item->attributes()->cost;
}

?>