如何将字典样式值添加到PHP数组？

I'm using PHP 5.4 and trying to add dictionary-style complex values to an array thusly:

array_push($qbProductsArray, $qbProduct => $authNetAmount);

I get this error:

Parse error: syntax error, unexpected '=>'

My desired result is to have a series of $qbProduct and $authNetAmount that are related together. I don't want to add them separately like this:

array_push($qbProductsArray, $qbProduct, $authNetAmount);

...because those 2 values are related to each other, and I don't want them just all thrown in together, even though they are adjacent. I want a firmer link between them. How can this be done?

try adding them as array:

array_push($qbProductsArray, array($qbProduct => $authNetAmount));

using the => syntax outside of the context of array is not possible in PHP.