Question

Here are the arrays.

Array1
(
[439] => dsaffsdfdfdfsffdsf
[379] => 3454
[375] => 3 ///why is it removed in the resulting array?
[436] => Fdsafdfsdf
[432] => 3  /// this one too
[431] => 2
[385] => 499
[434] => 3501
[435] => 2013-01-16
[430] => 1
[440] => fsdzsdaffdsfffdsf
[406] => YES
[438] => 32442344324324234
[376] => 3
)

Array2
(
[376] => 3
[385] => 499
)

array_diff(array1, array2)

result
(
[439] => dsaffsdfdfdfsffdsf
[379] => 3454
[436] => Fdsafdfsdf
[431] => 2
[434] => 3501
[435] => 2013-01-16
[430] => 1
[440] => fsdzsdaffdsfffdsf
[406] => YES
[438] => 32442344324324234
)

Looks weird to me. Any idea? Its removing based on value?

I just want Array2 elements removed from Array1

Answer 1

Manual is your best friend:

• array_diff() Compares array1 against array2 and returns the difference.
• array_diff_assoc() Compares array1 against array2 and returns the difference. Unlike array_diff() the array keys are also used in the comparison.
• array_diff_key() Compares the keys from array1 against the keys from array2 and returns the difference. This function is like array_diff() except the comparison is done on the keys instead of the values.