Is it possible to use a PHP operator as a callback? Suppose I want to add two
arrays elementwise, I want to be able to do something like this:
array_map('+', $array1, $array2)
but this doesn't work as "+" is an operator and not a function.
I can use the BC library's math functions instead:
array_map('bcadd', $array1, $array2)
but that is an ugly hack that might break if the library is not available.
I can create an anonymous function:
array_map(create_function('$a, $b', 'return $a + $b;'), $array1, $array2)
but that seems really unnecessarily verbose.
Is there any simple clean way to do it? Thanks,
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