實現多維數組轉化爲一維數組

<?php

/**
 * =======================================
 * Power: 實現多維數組轉化爲一維數組
 * =======================================
 */

/**
 * 多維數組轉化爲一維數組
 * @param array $array 多維數組
 * @return array $result_array 一維數組
 */
function array_multi2single($array)
{
    //首先定義一個靜態數組常量用來保存結果
    static $result_array = array();
    //對多維數組進行循環
    foreach ($array as $value) {
        //判斷是否是數組，如果是遞歸調用方法
        if (is_array($value)) {
            array_multi2single($value);
        } else  //如果不是，將結果放入靜態數組常量
            $result_array [] = $value;
    }
    //返回結果（靜態數組常量）
    return $result_array;
}

$arr = array(
    array(
        'name' => 'a',
        'sex' => 'm',
        'sort' => 5
    ),
    array(
        'name' => 'c',
        'sex' => 'm',
        'sort' => 8
    ),
    array(
        'name' => 'g',
        'sex' => 'm',
        'sort' => 3
    ),
    array(
        'name' => 'e',
        'sex' => 'w',
        'sort' => 6
    ),
    array(
        'name' => 'b',
        'sex' => 'w',
        'sort' => 2
    ),
);

print_r(array_multi2single($arr));

?>
打印結果，實現多維數組轉化爲一維數組：
Array  (      [0] => a      [1] => m      [2] => 5      [3] => c      [4] => m      [5] => 8      [6] => g      [7] => m      [8] => 3      [9] => e      [10] => w      [11] => 6      [12] => b      [13] => w      [14] => 2  )
Array
(
    [0] => a
    [1] => m
    [2] => 5
    [3] => c
    [4] => m
    [5] => 8
    [6] => g
    [7] => m
    [8] => 3
    [9] => e
    [10] => w
    [11] => 6
    [12] => b
    [13] => w
    [14] => 2
)