Sort Array of a file_get_html

I have this strange case, I hope you help me. I am trying to sort the result of an array Extracted with DOM but it does not work for me

Code:

include('../simple_html_dom.php');

$html = file_get_html('http://Google.com/');

$links = array();

$orden= array_splice($links, 0,0,54) // utilizo esta función para ordenar los arrays y mostrar los últimos 

foreach($html->find('a') as $a) {
 $orden[] = $a->href;
}
print_r($orden);

RESUTADO

  

Array ([0] = >

     

1- link 1 2- link 2 3 - link 3 ............. (Show as 50   elements and I want to limit it to 5 for example)

     

1- link 1 2- link 2 3 - link 3 4- link 4 5- link 5

In summary array_splice promises to do that but it does not work, what am I doing wrong?