Changing value inside foreach loop doesn't change value in the array being iterated over

Question

Why does this yield this:

foreach( $store as $key => $value){
$value = $value.\".txt.gz\";
}

unset($value);

print_r ($store);

Array
(
[1] => 101Phon         


        

Answer 1

You are rewriting the value within the loop, and not the key reference in your array.

Try

 $store[$key] = $value.".txt.gz";

Answer 2

I believe this is what you want to do:

foreach( $store as $key => $value){
$store[$key] = $value.".txt.gz";
}

unset($value);

print_r ($store);

Answer 3

How about array map:

$func = function($value) { return $value . ".txt.gz"; };
print_r(array_map($func, $store));