push an element to each array in a multidimentional array in php?

问题

Here's my array

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

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?

Result array should be like

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

Thanks a bunch

Got it, Kudos to @strager

$myvar = 'Three';

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

回答1:

With array_walk:

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

With array_map:

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

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);

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');

回答2:

you can use function array_push() for push array into array

int array_push ( array &$array , mixed $var [, mixed $... ] );

This may help you as your requirements.

thanks.

来源：https://stackoverflow.com/questions/4364997/push-an-element-to-each-array-in-a-multidimentional-array-in-php

标签

php

multidimensional-array