PHP将一维数组转换为多维数组

Question

I have array of 15 elements and each element contains 1000 arrays. How can I convert all this arrays in one simple dimensional array? I need to get this inner arrays and convert this in one dimensional array of arrays.

    Array
(
    [0] => Array
        (
            [0] => Array[0..999]
            [1] => Array[0..999]
            [2] => Array[0..999]
        )

    [1] => Array
        (
            [0] => Array[0..999]///items are also arrays
            [1] => Array[0..999]
        )

    [2] => Array
        (

            [0] => Array[0..999]
            [1] => Array[0..999]
            [2] => Array[0..999]
        )
....

It needs to look like this:

 Array(
[0] => Array
    [0]=>value
    [1]=>value
    [2]=>value

[1] => Array
    [0]=>value
    [1]=>value
    [2]=>value
)

Answer 1

array_merge() will merge multiple arrays, but you have an unspecified number in the main array. So use the array as the parameters for call_user_func_array() with array_merge() as the callback:

$result = call_user_func_array('array_merge', $array);

Answer 2

Create an empty 'main' array and merge the 15 arrays into it

$main_array = [];

foreach($big_array as $value)
{
    $main_array = array_merge($main_array,$value);
}

eg:

$main_array = [];
foreach([[1],[2],[3,4,5,6,7]] as $value)
{
    $main_array = array_merge($main_array,$value);
}
print_r($main_array);

//output
Array
(
    [0] => 1
    [1] => 2
    [2] => 3
    [3] => 4
    [4] => 5
    [5] => 6
    [6] => 7
)

Answer 3

A recursive function, one that calls itself, could do the trick, eg

<?php

$currentArray = [*your multi-dim array*];
$targetArray = [];

$level = 0;

$targetArray = flattenArray($currentArray, $targetArray, $level);

function flattenArray($currentArray, $targetArray, $level){
  foreach($currentArray as $value){
    if(is_array($value) AND $level < 1){
      $targetArray = flattenArray($value, $targetArray, $level + 1);
    }else{
      $targetArray[] = array(print_r($value, TRUE));
    }
  }
  return $targetArray;
}

?>