PHP 从 SimpleXMLElement 数组中获取值
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PHP get values from SimpleXMLElement array
提问by seanp2k
I have this:
我有这个：
[1]=>
object(SimpleXMLElement)#6 (1) {
["@attributes"]=>
array(14) {
["name"]=>
string(5) "MySQL"
["acknowledged"]=>
string(1) "1"
["comments"]=>
string(1) "1"
["current_check_attempt"]=>
string(1) "1"
["downtime"]=>
string(1) "0"
["last_check"]=>
string(19) "2010-05-01 17:57:00"
["markdown_filter"]=>
string(1) "0"
["max_check_attempts"]=>
string(1) "3"
["output"]=>
string(42) "CRITICAL - Socket timeout after 10 seconds"
["perfdata_available"]=>
string(1) "1"
["service_object_id"]=>
string(3) "580"
["state"]=>
string(8) "critical"
["state_duration"]=>
string(6) "759439"
["unhandled"]=>
string(1) "0"
}
}
(I used var_dump($child) to generate that)
（我使用 var_dump($child) 来生成）
How do I get the 'name' attribute out of there as a string?
如何将 'name' 属性作为字符串取出？
Here is my code:
这是我的代码：
$xml = simplexml_load_string($results);
foreach($xml->data->list as $child) {
var_dump($child);
echo $child->getName() . ": " . $child->name . "<br />";
}
回答by JW.
While you can do:
虽然你可以这样做：
echo $child['name'];
to see the value, you should note that $child['name']is an object, not a string. Echoing it casts it to a string, so it works in that situation. But if you're storing it somewhere, it's better to cast it to a string yourself:
要查看该值，您应该注意它$child['name']是一个对象，而不是一个字符串。回显它会将其转换为字符串，因此它可以在这种情况下工作。但是如果你将它存储在某个地方，最好自己将它转换为字符串：
$name = (string) $child['name'];
回答by Pascal MARTIN
With SimpleXML, you can get :
使用 SimpleXML，您可以获得：
- sub-elements, using object notation :
$element->subElement - and attributes, using array notation :
$element['attribute']
- 子元素，使用对象表示法：
$element->subElement - 和属性，使用数组表示法：
$element['attribute']
So, here, I'd say you'd have to use :
所以，在这里，我想说你必须使用：
echo $child['name'];
As a reference, and for a couple of examples, see the Basic usagesection of simplexml's manual.
作为参考和一些示例，请参阅simplexml 手册的基本用法部分。
Example #6should be the interesting one, about attributes.
Example #6应该是有趣的一个，关于属性。
回答by seanp2k
Kind of messy, but I used this successfully
有点乱，但我成功地使用了这个
foreach($xml->data->children() as $child) {
//var_dump($child);
foreach ($child->attributes() as $a => $b) {
echo $a . '=' . $b . '<br />';
}
}
Not sure why, but the OpsView API returns a two-dimensional array instead of just having one value per XML node :(
不知道为什么，但 OpsView API 返回一个二维数组，而不是每个 XML 节点只有一个值:(
echo $child['name'];
works and is much more elegant, thank you.
有效并且更优雅，谢谢。
回答by CE_REAL
I had a similar problem, I needed to get the string out of my SimpleXMLElement, I couldn't find the name to call it. Found the solution, by using (string) to get the string text:
我遇到了类似的问题，我需要从 SimpleXMLElement 中取出字符串，但找不到名称来调用它。找到解决方案，通过使用 (string) 获取字符串文本：
foreach ($lines as $line) {
array_push($result, new line(**(string)**$line));
}
array
0 =>
object(line)[190]
private '_line' =>
object(SimpleXMLElement)[128]
public '@attributes' =>
array
...
string ' ' (length=1)
1 =>
object(line)[191]
private '_line' =>
object(SimpleXMLElement)[131]
public '@attributes' =>
array
...
string ' ' (length=1)
2 =>
object(line)[192]
private '_line' =>
object(SimpleXMLElement)[132]
public '@attributes' =>
array
...
string ' ~54**** I N V O I C E ****' (length=27)
