Imploding an associative array in PHP

Question

Say I have an array:

$array = Array(   'foo' => 5,   'bar' => 12,   'baz' => 8 ); 

And I'd like to print a line of text in my view like this:

"The values are: foo (5), bar (12), baz (8)"

What I could do is this:

$list = Array(); foreach ($array as $key => $value) {   $list[] = "$key ($value)"; } echo 'The values are: '.implode(', ',$list); 

But I feel like there should be an easier way, without having to create the $list array as an extra step. I've been trying array_map and array_walk, but no success.

So my question is: what's the best and shortest way of doing this?

Answer 1

The problem with array_map is that the callback function does not accept the key as an argument. You could write your own function to fill the gap here:

function array_map_assoc( $callback , $array ){   $r = array();   foreach ($array as $key=>$value)     $r[$key] = $callback($key,$value);   return $r; } 

Now you can do that:

echo implode(',',array_map_assoc(function($k,$v){return "$k ($v)";},$array));