我想要所有属性值[关闭]

Question

my xml look like this:--->

            <?xml version="1.0"?>
            <childrens>
            <child1 entity_id="1" value="Root Catalog" parent_id="0">
                <child2 entity_id="2" value="Navigate" parent_id="1">
                    <child4 entity_id="4" value="Activities" parent_id="2">
                            </child4>
                    </child2>
            </child1>
            </childrens>

i want out put something like this:--->
Root Catalog
Navigate
Activities
this is my code:

<?php
$str = '<childrens>
<child1 entity_id="1" value="Root Catalog" parent_id="0">
    <child2 entity_id="2" value="Navigate" parent_id="1">
        <child4 entity_id="4" value="Activities" parent_id="2">
                </child4>
        </child2>
</child1>
</childrens>';
$pattern = '/<(.*)="(.*)">/';
preg_match_all($pattern, $str, $matches);
print_r($matches[1]);
?>

Answer 1

How's this:

<?php
$str = '<childrens>
<child1 entity_id="1" value="Root Catalog" parent_id="0">
    <child2 entity_id="2" value="Navigate" parent_id="1">
        <child4 entity_id="4" value="Activities" parent_id="2">
                </child4>
        </child2>
</child1>
</childrens>';
$xml = simplexml_load_string($str);

$values = $xml->xpath('//@value');

foreach($values as $value) {
   echo $value."
";
}
?>