你可以用茴香酒来做:

 $result = Arrays::flatten($multidimensional);

看到:

我相信这是最干净的解决方案，不使用任何突变或不熟悉的类。

<?php

function flatten($array)
{
    return array_reduce($array, function($acc, $item){
        return array_merge($acc, is_array($item) ? flatten($item) : [$item]);
    }, []);
}


// usage
$array = [1, 2, [3, 4], [5, [6, 7]], 8, 9, 10];
print_r(flatten($array));

诀窍是通过引用传递源数组和目标数组。

function flatten_array(&$arr, &$dst) {
    if(!isset($dst) || !is_array($dst)) {
        $dst = array();
    }
    if(!is_array($arr)) {
        $dst[] = $arr;
    } else {
        foreach($arr as &$subject) {
            flatten_array($subject, $dst);
        }
    }
}

$recursive = array('1', array('2','3',array('4',array('5','6')),'7',array(array(array('8'),'9'),'10')));
echo "Recursive: \r\n";
print_r($recursive);
$flat = null;
flatten_array($recursive, $flat);

echo "Flat: \r\n";
print_r($flat);

// If you change line 3 to $dst[] = &$arr; , you won't waste memory,
// since all you're doing is copying references, and imploding the array 
// into a string will be both memory efficient and fast:)

echo "String:\r\n";
echo implode(',',$flat);

二维数组的解

请试试这个:

$array  = your array

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

echo "<pre>";
print_r($result);

编辑:8月21日-13日

下面是适用于多维数组的解决方案:

function array_flatten($array) {
    $return = array();
    foreach ($array as $key => $value) {
        if (is_array($value)){
            $return = array_merge($return, array_flatten($value));
        } else {
            $return[$key] = $value;
        }
    }

    return $return;
}

$array  = Your array

$result = array_flatten($array);

echo "<pre>";
print_r($result);

裁判:http://php.net/manual/en/function.call-user-func-array.php

您可以使用标准PHP库(SPL)来“隐藏”递归。

$a = array(1,2,array(3,4, array(5,6,7), 8), 9);
$it = new RecursiveIteratorIterator(new RecursiveArrayIterator($a));
foreach($it as $v) {
  echo $v, " ";
}

打印

1 2 3 4 5 6 7 8 9 

因为这里的代码看起来很可怕。下面是一个将多维数组转换为html格式兼容语法的函数，但它更容易阅读。

/**
 * Flattens a multi demensional array into a one dimensional
 * to be compatible with hidden html fields.
 *
 * @param array $array
 *  Array in the form:
 *  array(
 *    'a' => array(
 *      'b' => '1'
 *    )
 *  )
 *
 * @return array
 *  Array in the form:
 *  array(
 *    'a[b]' => 1,
 *  )
 */
function flatten_array($array) {
  // Continue until $array is a one-dimensional array.
  $continue = TRUE;
  while ($continue) {
    $continue = FALSE;

    // Walk through top and second level of $array and move 
    // all values in the second level up one level.
    foreach ($array as $key => $value) {
      if (is_array($value)) {
        // Second level found, therefore continue.
        $continue = TRUE;

        // Move each value a level up.
        foreach ($value as $child_key => $child_value) {
          $array[$key . '[' . $child_key . ']'] = $child_value;
        }

        // Remove second level array from top level.
        unset($array[$key]);
      }
    }
  }

  return $array;
}