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E_K
Asked:2020-10-18 22:15:39 +0000 UTC2020-10-18 22:15:39 +0000 UTC

如何从 SimpleXMLElement 获取标签值？

  • 772

如何获取标签的值<category>并将其写入数组？

问题是我无法以任何方式获取标签<category>（家用灯echo）的内容，除了返回对象（SimpleXMLElement）之外的任何尝试。

<?php

$file = <<<XML
<yml_catalog date="2019-10-18 16:00">
    <shop>
        <categories>
            <category id="41" parentId="38">Лампы бытовые</category>
            <category id="42" parentId="41">A60</category>
        </categories>
    </shop>
</yml_catalog>
XML;

$value = new SimpleXMLElement($file);

$categories = [];

foreach ($value->shop->categories->category as $c) {

    $categories[(int)$c->attributes()['id']] =
    [
        'id' => (int)$c->attributes()['id'],
        'parentId' => (int)$c->attributes()['parentId'],
        'name' => $c[0]                                   // object(SimpleXMLElement)
    ];

    echo '<pre>';
    var_dump($categories[(int)$c->attributes()['id']]);
    echo '</pre>';
    echo '<hr>';
}

导致var_dump循环

array(3) {
["id"]=>
int(41)
["parentId"]=>
int(38)
["name"]=>
object(SimpleXMLElement)#6 (2) {
    ["@attributes"]=>
    array(2) {
    ["id"]=>
    string(2) "41"
    ["parentId"]=>
    string(2) "38"
    }
    [0]=>
    string(25) "Лампы бытовые"
}
}
php

3 个回答

  1. Best Answer

    要获取对象的字符串值，SimpleXMLElement您需要将此对象转换为类型string（这实际上是在调用时隐式echo完成的，但您需要显式执行）：

    'name' = (string) $c[0],
// или с небольшим оверхедом
'name' = strval($c[0]),
    • 1

  2. 我认为你可以这样做：

         <?php
     $file = '<yml_catalog date="2019-10-18 16:00">
        <shop>
            <categories>
                <category id="41" parentId="38">Лампы бытовые</category>
                <category id="42" parentId="41">A60</category>
            </categories>
        </shop>
    </yml_catalog>';

    $value = new SimpleXMLElement( $file );

    $categories = [];
    $data = [];

    foreach ( $value->shop->categories->category as $key => $c ) {
        $data[ 'id' ] = ( int )$c->attributes()[ 'id' ];
        $data[ 'parentId' ] = ( int )$c->attributes()[ 'parentId' ];
        $data[ 'name' ] = ( string )$c[ 0 ];

        array_push( $categories, $data );
    }

    print_r( $categories );

/*
Результат

(
    [0] => Array
        (
            [id] =>  41
            [parentId] =>  38
            [name] =>  Лампы бытовые
        )

    [1] =>  Array
        (
            [id] =>  42
            [parentId] =>  41
            [name] =>  A60
        )

)


*/
    • 1

  3. 这个问题并不完全清楚。标签内的内容？

    'name' => $c[0].__toString() // SimpleXMLElement::__toString — Возвращает содержимое строки

    https://www.php.net/manual/ru/simplexmlelement.tostring.php

    • 0

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