array_slice AND array_splice

$arr1 = array(
    "a1" => "a1",
    "a2" => "a2",
    "a3" => "a3",
    "a4" => "a4",
    "a5" => "a5",
);

$t1 = array_slice($arr1, 2);//$t1==array("a3"=>"a3","a4"=>"a4","a5"=>"a5",);
$t2 = array_slice($arr1, -2);//$t2==array("a4"=>"a4","a5"=>"a5",);
$t3 = array_splice($arr1, 2);//$t3==array("a3"=>"a3","a4"=>"a4","a5"=>"a5",); $arr1==array("a1"=>"a1","a2"=>"a2",);
$t4 = array_splice($arr1, -2);//$t4==array("a4"=>"a4","a5"=>"a5",); $arr1==array("a1"=>"a1","a2"=>"a2","a3"=>"a3",);