PHP-如何合并这个二维数组？

Question

请看下面的二维数组样式

array(
0 => 
  array (
    0 => 'a1',
    1 => 'b1',
    2 => 'c1',

),
1 => 
  array (
    0 => 'a2',
    1 => 'b2',
    2 => 'c2',

),
2 => 
  array (
    0 => 'a3',
    1 => 'b3',
    2 => 'c3',

),

)

Answer 1

$arr=array(
0 =>
array (
0 => 'a1',
1 => 'b1',
2 => 'c1',
),
1 =>
array (
0 => 'a2',
1 => 'b2',
2 => 'c2',

),
2 =>
array (
0 => 'a3',
1 => 'b3',
2 => 'c3',

)

);
$arr2=array(array_column($arr,0),array_column($arr,1),array_column($arr,2));
仅用于解决上题

Answer 2

$newarr=array();
foreach($array as $k => $v){
$newarr[]=array_column($array,$k);
}

Answer 3

$arr=array(array('a1','b1','c1'),array('a2','b2','c2'),array('a3','b3','c3'));
$arr2=array();

for ($i=0; $i < count($arr); $i++) {
for ($j=0; $j < count($arr[$i]); $j++) {
//echo $arr[$i][$j]."<br/>";
$arr2[$j][$i]=$arr[$i][$j];
}
}

Answer 4

$arr=array();
for(i=-1,,i++){
array_push($arr,array(array[0][i],array[1][i],array[2][i]));
// 注意这里 array[0][i] 把 array 改成那个多维数组的变量名
if(i == 2){
back;
}
}