PHP read first item in object array

Question

I have my code in PHP which is returning this Array of data:

GoCardlessPro\Core\ListResponse Object
(
    [records] => Array
        (
            [0] => GoCardlessPro\Resources\Mandate Object
                (
                    [model_name:protected] => Mandate
                    [created_at:protected] => 2017-04-01T16:49:09.642Z
                    [id:protected] => ID001
                    [links:protected] => stdClass Object
                        (
                            [customer_bank_account] => CB001
                            [creditor] => CR001
                            [customer] => CU001
                        )

                    [metadata:protected] => stdClass Object
                        (
                        )

                    [next_possible_charge_date:protected] => 2017-04-06
                    [payments_require_approval:protected] => 
                    [reference:protected] => RE001
                    [scheme:protected] => bacs
                    [status:protected] => active
                    [data:GoCardlessPro\Resources\BaseResource:private] => stdClass Object
                        (
                            [id] => 123
                            [created_at] => 2017-04-01T16:49:09.642Z
                            [reference] => RE001
                            [status] => active
                            [scheme] => bacs
                            [next_possible_charge_date] => 2017-04-06
                            [payments_require_approval] => 
                            [metadata] => stdClass Object
                                (
                                )

                            [links] => stdClass Object
                                (
                                    [customer_bank_account] => 001
                                    [creditor] => CR001
                                    [customer] => CU001
                                )

                        )

                    [api_response] => 
                )

        )
)

I want to be able to read the ID of the first item in therecords array.

This data is contained inside a variable called $GC_Mandate;

I have tried these:

echo $GC_Mandate->records->{0}->id;

echo $GC_Mandate->records->0->id;

echo $GC_Mandate->records->[0]->id;

$GC_Mandate = $GC_Mandate->records;
echo $GC_Mandate->{0}->id;

But none will return the data

Decent Dabbler · Answer 1 · 2017-04-01T20:51:46.073

1

To get the first record, the syntax you need is $GC_Mandate->records[ 0 ].

However, that object is a GoCardlessPro\Resources\Mandate object and its member id is protected¹, so we'd need to know the interface of GoCardlessPro\Resources\Mandate (its public methods¹), to know if we can somehow retrieve the value of id.

My guess would be getId(), so the full syntax would become

$GC_Mandate->records[ 0 ]->getId()

But, that's just a guess. You'd have to look into the documentation/class definition of GoCardlessPro\Resources\Mandate, to be sure if you can retrieve id.

Turns out (provided I'm linking to the correct github repository) you can do:

$GC_Mandate->records[ 0 ]->id

since GoCardlessPro\Resources\Mandate extends GoCardlessPro\Resources\BaseResource, which exposes the protected members through GoCardlessPro\Resources\BaseResource::__get()².

^{1. visibility in PHP

2. magic methods in PHP}

edited Apr 01 '17 at 20:51

answered Apr 01 '17 at 20:32

Decent Dabbler

22,532
8
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just tried your second option but thats not showing the value – charlie Apr 01 '17 at 20:58
@charlie Then I'm afraid you might have to look a little further into their documentation. Meanwhile, I've also tagged your question with [tag:gocardless]. Perhaps that garners the appropriate attention to you question. – Decent Dabbler Apr 01 '17 at 21:10
@charlie Also, have you enabled the [reporting of errors](https://secure.php.net/manual/en/function.error-reporting.php) on your development server? Look into the errors log (or display them directly with `ini_set('display_errors', '1');`, while on the development server (don't enable displaying of errors on a live server though)). That should give you more clues about what's going on. – Decent Dabbler Apr 01 '17 at 21:24
i can loop through `$GC_Mandate->records` and echo the `ID` - not sure if that helps with trying to get the first item directly or should i just loop once and then break the loop? – charlie Apr 01 '17 at 21:38
@charlie If you can loop and access the `id` (or is it `ID`? Case is important here, as variables are case-sensitive), then `$GC_Mandate->records[ 0 ]->id` (or `->ID`) should also work, provided all the information (the array dump, array indexes, case-sensitivity, etc.) you posted so far is accurate. Please update your question with the exact (case-sensitive, etc) relevant code of your loop as well. – Decent Dabbler Apr 01 '17 at 22:01

score 0 · Answer 2 · answered Apr 01 '17 at 20:24

0

I can't comment so I guess I'll have to post.

You should try to print_r($GC_Mandate); and see what it gives out and then go from there.

answered Apr 01 '17 at 20:24

Marc Alexander

761
11
24

Thats how I am retrieving the array in my question – charlie Apr 01 '17 at 20:25

score 0 · Answer 3 · answered Apr 01 '17 at 20:37

0

Try $GC_Mandate->records[0]->__get('id')

answered Apr 01 '17 at 20:37

gmc

3,910
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score 0 · Answer 4 · answered Apr 01 '17 at 21:07

0

it will return all data ..for perticulat data put this in foreach loop

 print_r($GC_Mandate['records']);

answered Apr 01 '17 at 21:07

Manthan Patel

1,784
19
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PHP read first item in object array

4 Answers4