Searching for a specific value in XML-File using PHP

Question

I have a little problem:

I have this XML-File:

<response>
    <game_count>768</game_count>
    <games>
        <message>
            <appid>730</appid>
            <playtime_forever>549</playtime_forever>
        </message>
        <message>
            <appid>1300</appid>
            <playtime_forever>0</playtime_forever>
        </message>
        <message>
            <appid>1309</appid>
....

I tried to search for the value appid == '730' but unfortunately nothing helped.

E.G i tried this:

$game = new SimpleXMLElement($account_game_data);
$res = $game->xpath("games/message/appid[. = 730]");
print_r($res);

My result should be <appid>730</appid><playtime_forever>549</playtime_forever></message> as SimpleXMLElement.

If there is any code required, I will post it.

in your final result the sibling tag is also captured, should it be so? — RomanPerekhrest
– RomanPerekhrest, Commented Mar 16, 2017 at 21:16
@RomanPerekhres It works very fine. At least i had one fault, which isn't regarding to your code. It causes, that the game-var was empty. Thanks for help — SacrumDeus
– SacrumDeus, Commented Mar 18, 2017 at 23:08

RomanPerekhrest · Accepted Answer · 2017-03-16 22:11:07Z

2

Use the following approach:

$game = new \SimpleXMLElement($account_game_data);
$res = $game->xpath('games/message[appid="730"]');
print_r($res[0]->asXML());

The output:

<message>
            <appid>730</appid>
            <playtime_forever>549</playtime_forever>
        </message>

message[appid="730"] - matches the message element which has child appid with value 730

edited Mar 16, 2017 at 22:11

answered Mar 16, 2017 at 21:32

RomanPerekhrest

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4 Comments

Casimir et Hippolyte Over a year ago

instead of selecting the parent with .., you can put the end of the path in the predicate: games/message[appid="730"]. You can even select the children of the first "message" that matches: games/message[appid="730"][1]/* ( then you have to loop over them to display them with SimpleXMLElement::asXML())

Casimir et Hippolyte Over a year ago

Strange, I don't have this problem: eval.in/755883 (perhaps take care of the quotes I used).

Casimir et Hippolyte Over a year ago

You need to remove the slash before the predicate.

RomanPerekhrest Over a year ago

@CasimiretHippolyte, that's enough for me today(GMT +02:00. late night). Your suggestion is correct. I've updated to your expression. Thanks

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