求大神解决下php数组循环的有关问题

<br /><?php<br /><br />$arr = array(1,2,3,4,5,6,7,8);<br /><br />for($i=0; $i<count($arr); $i+=4){<br />	$temp = array_slice($arr, $i, 4);<br />	for($k=1; $k<=2; $k++){<br />		echo 'start'.$k.'<br>';<br />		foreach ($temp as $val) {<br />			echo $val.'<br>';<br />		}<br />		echo 'end'.$k.'<br>';<br />	}<br />}<br />

<br />$arr = array(1,2,3,4,5,6,7,8);<br />$n = 2; // 循环2次<br />$split = 4; // 4个为一个分组<br />echo '<pre class="brush:php;toolbar:false">';<br />response($arr, $n, $split);<br />echo '

<br />start1<br />1<br />2<br />3<br />4<br />end1<br />start2<br />1<br />2<br />3<br />4<br />end2<br />----------------------------------------------------------<br />start1<br />5<br />6<br />7<br />8<br />end1<br />start2<br />5<br />6<br />7<br />8<br />end2<br />