How to swap keys with values in array?

Question

I have array like:

array(
  0 => 'a',
  1 => 'b',
  2 => 'c'
);

I need to convert it to:

array(
  'a',
  'b',
  'c'
);

What's the fastest way to swap keys with values?

Answer 1

Use array_flip(). That will do to swap keys with values. However, your array is OK the way it is. That is, you don't need to swap them, because then your array will become:

array(
  'a' => 0,
  'b' => 1,
  'c' => 2
);

not

array(
  'a',
  'b',
  'c'
);

Answer 2

PHP has the array_flip function which exchanges all keys with their corresponding values, but you do not need it in your case because the arrays are the same.

array(
  'a',
  'b',
  'c'
);

This array has the keys 0, 1, and 2.