about php... how to convert string to array then show out? - php

Question

i have this string -
$result = "ABCDE";
and i want to seperate them to 3 parts
(like part 1 = A, part 2 = B, part 3 = C..., part 5 = E)
,give a name to each of them
part 1(A) = Apple
part 2(B) = Orange
part 3(C) = Ice-cream
part 3(D) = Water
part 5(E) = Cow
then the finally output is like
Output : You choose Apple, Orange, Ice-cream, Water, Cow
or like this
$result = "ACE";
Output : You choose Apple, Ice-cream, Cow
i have tried using array
$result = "ABCDE";
$showing = array(A => 'Apple , ', B => 'Orange , ', C => 'Ice-cream , ',
D => 'Water , ', E => 'Cow , ');
echo $showing[$result];
but i got nothing while output, seems array is not working in fixed string.
i want to know how to do it

Answer 1

For one line magic:
echo implode('',array_intersect_key($showing,array_flip(str_split($result))));

Answer 2

You can use the function str_split to split the string into individual letters, which can later be used as keys of your associative array.
Also you don't need to add comma at the end of each string. Instead you can use the implode function to join your values:
$input = "ABCDE";
$showing = array('A' => 'Apple', 'B' => 'Orange', 'C' => 'Ice-cream',
'D' => 'Water', 'E' => 'Cow');
$key_arr = str_split($input);
$val_arr = array();
foreach($key_arr as $key) {
$val_arr[] = $showing[$key];
}
echo "You choose ".implode(',',$val_arr)."\n";

Answer 3

You can access characters from a string similar to elements in an array, like this:
$string = "ABCDE";
echo $string[2]; // "C"
Technically, it's not really treating it like an array, it just uses a similar syntax.
You could use
$choices= array('A' => 'Apple', 'B' => 'Orange', 'C' => 'Ice-cream',
'D' => 'Water', 'E' => 'Cow');
$selected[] = array();
for ($i = 0, $len = strlen($result); $i < $len; $i++) {
$selected[] = $choices[$string[$i]];
}
echo "You have selected: " . implode(', ', $selected);
Although str_split, as others have suggested, would also work.