将一个元素推送到php中多维数组中的每个数组? [英] push an element to each array in a multidimentional array in php?

问题描述

这是我的数组

$myArr  = array(array('one', 'two'), array('one', 'two'));

我想向 $myArr 内的每个数组添加一个元素.我不想遍历里面的每个数组并添加该元素.是否有使用 array_map 或 array_walk.. 最好用一行代码来实现这一目标的更快方法?

I would like add an element to every array inside the $myArr. I dont wanna loop over each array inside and add that element. Is there any quicker way to achieve this using array_map or array_walk.. preferably with one line of code?

结果数组应该像

$myArr  = array(array('one', 'two','three'), array('one', 'two','three'));

非常感谢

明白了，感谢 @strager

$myvar = 'Three';

$myArr = array_map(function ($subarray) {  global $myvar; $subarray[] = $myvar;   return $subarray;}, $myArr);

推荐答案

With array_walk:

array_walk($myArr, create_function('&$subarray', '$subarray[] = "three";'));

使用array_map:

$myArr = array_map(create_function('$subarray', '$subarray[] = "three"; return $subarray;'), $myArr);

带有匿名函数的 array_map(未经测试；我无法访问 PHP5.3):

With anonymous functions an array_map (untested; I don't have access to PHP5.3):

$myArr = array_map(function ($subarray) {
    $subarray[] = "three";
    return $subarray;
}, $myArr);

当然，或者更好的解决方案(对于 PHP <5.3):

Or of course, the better solution (for PHP < 5.3):

function pushToEndOfSubarrays($array, $item) {
    $ret = array();

    foreach ($array as $key => $subarray) {
        $subarray[] = $item;
        $ret[$key] = $subarray;
    }

    return $ret;
}

$myArr = pushToEndOfSubarrays($myArr, 'three');

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