Remove all keys from an associative array in order to get a simple no key all-value array

Question

Here is the sort of array I have for instance:

Array ( 
        [0] => Array ( [id] => 21 )
        [1] => Array ( [id] => 24 ) 
      ) 

and I simply want to have

Array(21,24)

How can I do it ?

Answer 1

Try this

foreach($array as &$element){ $element = $element['id']; }