Hello,
I have an array of arrays like this:
---
[array_of_arrays:private] => Array
(
[0] => Array
(
[0] => 2
[1] => 4
[2] => 5
[3] => 17
[4] => 80
)
[1] => Array
(
[0] => 5
[1] => 7
[2] => 9
[3] => 2
[4] => 16
[5] => 58
)
[2] => Array
(
[0] => 2
[1] => 4
[2] => 6
[3] => 8
[4] => 37
[5] => 92
)
)
---
and I want to do an array_diff on them so that I get something like this back:
---
Array
(
[0] => 6
[1] => 7
[2] => 8
[3] => 9
[4] => 16
[5] => 17
[6] => 37
[7] => 58
[8] => 80
[9] => 92
)
---
The arrays above are just an example; the real arrays I am working with can
have many more elements (in the tens of thousands). Also, there can be a
variable number of subarrays. I have written several different versions of my
own array_diff that iterates over all the subarrays but they are slow.
My question is is there a way to call the built-in array_diff with a
dynamically generated list of arguments? I was thinking maybe there would be a
way to do this with variable variables or if I generated a string that could be
parsed by PHP but I have only succeeded in confusing myself further. Thanks
for any suggestions.
Mari
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