$link = 'http://www.google.com';
$number = 3;

$arr = array(
'http://www.google.com',
'http://www.google.com/1',
'http://www.google.com/2'
);

$link = 'http://www.google.com';
$number = 6;

$arr = array(
'http://www.google.com',
'http://www.google.com/1',
'http://www.google.com/2',
'http://www.google.com/3',
'http://www.google.com/4',
'http://www.google.com/5'
);