数组循环输出问题

$a = M('a');//从数据库A表中读取数据（数组）$b = M('b');//从数据库A表中读取数据（数组）foreach ($a as $k=>$v){	echo $v;}foreach ($b as $kk=>$vv){	echo $vv;}//注释：代码只是为了更好的说明//读取3条$v后读取1条$vv再循环读取3条$v,1条$vv，一直循环下去，直到$v循环输出完毕，停止输出

$a,$b都是数组，循环是为了在前台显示，每显示3条a表数据，插入一条广告（注：广告在数据库表b中）数据显示不能重复。请问如何实现？

回复讨论(解决方案)

$a = array(1,2,3,4,5,6,7,8,9,10,11,12,13);$b = array('广告1','广告2','广告3');$newa = array_chunk($a,3);foreach($b as $k=>$v){	array_push($newa[$k],$v);}$data = array();foreach($newa as $v){	$data = array_merge($data,$v);}print_r($data);/*Array(    [0] => 1    [1] => 2    [2] => 3    [3] => 广告1    [4] => 4    [5] => 5    [6] => 6    [7] => 广告2    [8] => 7    [9] => 8    [10] => 9    [11] => 广告3    [12] => 10    [13] => 11    [14] => 12    [15] => 13)*/

$a = array(1,2,3,4,5,6,7,8,9,10,11,12,13);$b = array('广告1','广告2','广告3');$newa = array_chunk($a,3);foreach($b as $k=>$v){	array_push($newa[$k],$v);}$data = array();foreach($newa as $v){	$data = array_merge($data,$v);}print_r($data);/*Array(    [0] => 1    [1] => 2    [2] => 3    [3] => 广告1    [4] => 4    [5] => 5    [6] => 6    [7] => 广告2    [8] => 7    [9] => 8    [10] => 9    [11] => 广告3    [12] => 10    [13] => 11    [14] => 12    [15] => 13)*/

很好的思路。非常值得借鉴！

$a = array(1,2,3,4,5,6,7,8,9,10,11,12,13);$b = array('广告1','广告2','广告3');$g = 0;foreach($a as $k=>$v) {  echo $v . '
';  if($k && $k % 3 == 0)    echo @$b[$g++] . '
';}

1234广告1567广告28910广告3111213

$a = array(1,2,3,4,5,6,7,8,9,10,11,12,13);$b = array('广告1','广告2','广告3');$g = 0;foreach($a as $k=>$v) {  echo $v . '
';  if($k && $k % 3 == 0)    echo @$b[$g++] . '
';}

1234广告1567广告28910广告3111213

如果$b的key不是数字，这种方法不是不可行了吗？因为$a和$b都是从数据库取出来的，所以他们实际上是关联数组。

$a = array(1,2,3,4,5,6,7,8,9,10,11,12,13);$b = array('广告1','广告2','广告3', '', '');$t = array_map('array_merge', array_chunk($a, 3), array_chunk($b, 1));print_r($t);

Array(    [0] => Array        (            [0] => 1            [1] => 2            [2] => 3            [3] => 广告1        )    [1] => Array        (            [0] => 4            [1] => 5            [2] => 6            [3] => 广告2        )    [2] => Array        (            [0] => 7            [1] => 8            [2] => 9            [3] => 广告3        )    [3] => Array        (            [0] => 10            [1] => 11            [2] => 12            [3] =>         )    [4] => Array        (            [0] => 13            [1] =>         ))

不是下标数组，你可以另设一个计数器
也可以用 array_values 将其编程下标数组