Move Value in PHP Array to the Beginning of the Array

Question

I have a PHP array similar to this:

0 => \"red\",
1 => \"green\",
2 => \"blue\",
3 => \"yellow\"

I want to move yellow to index

Answer 1

$array = array(
  'red',
  'green',
  'blue',
  'yellow',
);

$last = array_pop($array);
array_unshift($array, $last);