function to slice in php based on index numbers code example

Example: php array slice

// array_slice($array, $offset, $length)

$array = array(1,2,3,4,5,6);

// positive $offset: an offset from the begining of array  
print_r(array_slice($array, 2)); // [3,4,5,6]

// negative $offset: an offset from the end of array
print_r(array_slice($array, -2)); // [5,6]

// positive $length: the slicing will stop $length elements
// from offset
print_r(array_slice($array, 2, 3)); // [3,4,5]

// negative $length: the slicing will stop $length elements
// from the end of array
print_r(array_slice($array, 2, -3)); // [3]