Convert array of single-element arrays to one a dimensional array

Question

I have this kind of an array:

Array (     [0] => Array         (             [0] => 88868         )     [1] => Array         (             [0] => 88867         )     [2] => Array         (             [0] => 88869         )     [3] => Array         (             [0] => 88870         ) ) 

I need to convert this to one dimensional array. How can I do that?

For example like this..

Array (     [0] => 88868     [1] => 88867     [2] => 88869     [3] => 88870  ) 

Any php built in functionality is available for this array conversion?

Answer 1

For your limited use case, this'll do it:

$oneDimensionalArray = array_map('current', $twoDimensionalArray); 

This can be more generalized for when the subarrays have many entries to this:

$oneDimensionalArray = call_user_func_array('array_merge', $twoDimensionalArray);