php - Is it a good idea to create variables using references? -

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example:

function create_pets(&$cats, &$dogs){  $dogs = get_dogs();  $cats = get_cats(); }

so call like:

function foo(){   create_pets($cats, $dogs);    // here use $cats , $dogs variables }

i know assign new varible return value of 1 of getter functions, example. in situation there's more getter...

the answer says "it depends". in specific example, "create" function, code less obvious work , maintain, , it's idea avoid pattern.

but here's news, there's way of doing trying keeps things simple , compact while using no references:

function create_pets(){     return array(get_dogs(), get_cats()); }   function foo(){     list($dogs, $cats) = create_pets();     //here use $cats , $dogs variables }

as can see can return array , use the list language construct individual variables in single line. it's easier tell what's going on here, create_pets() returning new $cats , $dogs; previous method using references didn't make clear unless 1 inspected create_pets() directly.

you not find performance difference of using either method though, both work. you'll find writing code easy follow , work on goes long way.


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