php loop in attempt to add array values to an objects method / property

Question

If i hand code each array value like this:

$paymentDetailsType->setPaymentDetailsItem(
    array (
        'PaymentDetailsItem00' => $paymentDetailsItem,
        'PaymentDetailsItem01' => $paymentDetailsItem1,
    )
);

it works, however the number of array items can vary so i tried this with horrible results not sure what else to try

for ($i=0; $i<$_POST['cartcount']; $i++) {
    if ($i==0) {
        $paymentDetailsType->setPaymentDetailsItem(
            array (                     
                'PaymentDetailsItem00' => $paymentDetailsItem,
            )
        );
    } else {
        $paymentDetailsType =& $paymentDetailsType->setPaymentDetailsItem(
            array (
                'PaymentDetailsItem0'.$i.'' => ${'paymentDetailsItem'.$i},
            )
        );
    }
}

What I believe I am trying to do is add an array value to an object method.

Can you create an array first, and then pass that array as a parameter to your method? — robonerd
– robonerd, Commented Jun 20, 2012 at 21:45
@robonerd what a simple solution! yes that did the trick just created an array then add keys and values with a for loop then added the object property as the full array — kqlambert
– kqlambert, Commented Jun 20, 2012 at 22:04

kqlambert · Accepted Answer · 2012-06-20 22:06:36Z

2

$thenewarray = array (
    'PaymentDetailsItem00' => $paymentDetailsItem,
);

if ($_POST['cartcount']>1) {
    for ($i=1; $i<$_POST['cartcount']; $i++) {
        $thenewarray['PaymentDetailsItem0'.$i.''] = ${'paymentDetailsItem'.$i};
    }
    $i=0;
}

$paymentDetailsType->setPaymentDetailsItem($thenewarray);

created the array beforehand then loop through added the keys and values finally after the array has been completed add it to the object

answered Jun 20, 2012 at 22:06

kqlambert

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Comments

CodeCaster · Accepted Answer · 2012-06-20 22:33:35Z

$paymentDetailsType =& $paymentDetailsType->setPaymentDetailsItem(
            array (
                'PaymentDetailsItem0'.$i.'' => ${'paymentDetailsItem'.$i},
            )
        );

This part won't work, because you can't expect two objects to be merged when using =&. When you want to add arrays, you can call array_merge(). You could for example change your paymentDetailsType to this:

class paymentDetailsType
{
    private $_items = array();

    function addPaymentDetailsItem($items)
    {
        $_items = array_merge($_items, $items);
    }
}

Besides that, when you change ${'paymentDetailsItem'.$i} to being an array, you can simply address the items as $paymentDetailsItem[$i] and simply use $i as the key.

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