php循环数组返回总是第一个元素

Question

easy question but i can't find a solution.

I have an array:

array
   0 => 
     array
       1 => string '25' (length=2)
   1 => 
     array
       1 => string '27' (length=2)

And i need to get:

    array
  0 => string '25' (length=2)
  1 => string '27' (length=2)

Yea if course i could do:

foreach($result as $each) {
    $resultIds[]=$each[1];
}

But i am pretty sure i saw this week somewhere a function for it something like...

array_something('current',$result);

What will loop over the array as foreach and return the first element so the result will be the same as the foreach solution. But i can't find it or remember it.

*What is the name of the function ? *

Answer 1

You can use array_map or array_walk

example of array_map

<?php
function first($n)
{
    return $n[1];
}

$arr = array(
    array(1, 2, 4),
    array(1, 2, 3,),
);
var_export($arr);
// call internal function
$arr = array_map('current', $arr);
var_export($arr);

// call user function
$arr = array_map('first', $arr);