PhP MultiDimensional Array fetching

Question

I am not really familiar on how php handles array, in .NET I can access array using this method

array[x][y];

My question is:

I am retrieving records from the database and returning it to the $res_merchant_field

$res_merchant_field = $this->CI->merchantfield_model->merchantfield_list( $str_where );

and $res_merchant_field will be populated with this record:

Array
(
    [0] => stdClass Object
        (
            [MFID] => 1
            [MFName] => Bill No
            [FTID] => 1
            [DTID] => 1
            [MFRequired] => 1
            [MFDefaultValue] => 
            [MFDueDate] => 0
            [MFToBePaid] => 0
            [MFMaxLength] => 12
            [MFOrderNo] => 1
            [MFStatus] => 1
        )

    [1] => stdClass Object
        (
            [MFID] => 2
            [MFName] => Gallons Consumed
            [FTID] => 1
            [DTID] => 2
            [MFRequired] => 1
            [MFDefaultValue] => 
            [MFDueDate] => 0
            [MFToBePaid] => 0
            [MFMaxLength] => 5
            [MFOrderNo] => 2
            [MFStatus] => 1
        )

    [2] => stdClass Object
        (
            [MFID] => 3
            [MFName] => Amount Due
            [FTID] => 3
            [DTID] => 1
            [MFRequired] => 1
            [MFDefaultValue] => 
            [MFDueDate] => 0
            [MFToBePaid] => 1
            [MFMaxLength] => 15
            [MFOrderNo] => 3
            [MFStatus] => 1
        )

)

How can I access and fetch the record from that array with this condition:

it will look through all the array find specific index, lets say index 0 which is MFID,
after getting the MFID and comparing it with another variable, if it is true,
it will get the DTID for that array MFID.

example:

get MFID = 1, the DTID will be 1, if I get the MFID = 3, the DTID will be 1.

or how can I access the array like $array[x][y]?

Thanks in advance.

Orangepill · Accepted Answer · 2013-06-17 02:26:25Z

1

The problem is that the second level is not an array but instead an object, to access a property you will have to use this format.

 $array[$x]->$y;

Unfortunately you cannot access a property by an index do o get the MFID of the 0th Item you will need to say

 $array[0]->MFID;

answered Jun 17, 2013 at 2:26

Orangepill

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5 Comments

rfpdl Over a year ago

Hi again Orangepill, this is a follow up question though, nearly the same question as above, I have managed to solve the initial problem, now I am producing this kind of array: Array ( [0] => Array ( [0] => 11 [1] => 123 [2] => 232.22 ) [1] => Array ( [0] => 1 [1] => 2 [2] => 3 ) ) I tried the method $validate_field[0]->0; but it doesnt work. thanks again.

Orangepill Over a year ago

now it is an array of arrays and you can use the [$x][$y] notation. The tell here is in the original question the stdClass Object in the var dump

rfpdl Over a year ago

hm.. I seem to have solve the question, I can access the array using $validate_field[0][0]. That is weird though, how come I can access and get the value from that array using $array[$x][$y] compare to my first question that must use $validate_field[0]->MFID?

Orangepill Over a year ago

the first problem was an array or objects, the follow up was an array of arrays.

rfpdl Over a year ago

how can I determine whether an array of arrays or if it is an array of objects? so php treats these kind of data seperately? interesting..

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