多维数组打印来出效果：
Array ( [10] => 准备买 [11] => 不准备换 [12] => Array ( [0] => 3厢小轿车 [1] => 城市SUB ) [13] => 33333 [14] => Array ( [0] => 中型 [1] => 小巧型 ) [15] => 全险 )
想转换成一维的，保持原来KEY不变，遇到多维就合并，最终想得到
Array ( [10] => 准备买 [11] => 不准备换 [12] => 3厢小轿车, 城市SUB [13] => 33333 [14] => 中型 ,小巧型 [15] => 全险 )
搞了半天，有点迷糊了。请高手看看
$a = Array ( 10 => '准备买', 11 => '不准备换', 12 => Array ( 0 => '3厢小轿车', 1 => '城市SUB' ), 13 => 33333, 14 => Array ( 0 => '中型', 1 => '小巧型' ), 15 => '全险',);foreach($a as $k=>$v) { if(is_array($v)) $a[$k] = join(',', $v);}print_r($a);Array( [10] => 准备买 [11] => 不准备换 [12] => 3厢小轿车,城市SUB [13] => 33333 [14] => 中型,小巧型 [15] => 全险)
楼上是正解。
$a = array ( 10 => '准备买', 11 => '不准备换', 12 => Array ( 0 => '3厢小轿车', 1 => '城市SUB' ), 13 => 33333, 14 => Array ( 0 => '中型', 1 => '小巧型' ), 15 => '全险',);$b=array();foreach($a as $k=>$v){ $b[$k]=$v; if(is_array($v)){ $b[$k]=$v[0].','.$v[1]; }}print_r($b);Array( [10] => 准备买 [11] => 不准备换 [12] => 3厢小轿车,城市SUB [13] => 33333 [14] => 中型,小巧型 [15] => 全险)
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