Insert to Array at position

array_insert.php

function array_insert($array, $var, $position)
{
	$before = array_slice($array, 0, $position);
	$after = array_slice($array, $position);

	$return = array_merge($before, (array) $var);
	return array_merge($return, $after);
}

One code line:
array_splice($array, $position, 0, array($var));