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

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

You have no key called ABCDE set in the $showing array, so it doesn't show anything. You'll want to take the $result string apart into individual characters and output all the array elements that intersect with this array (hint hint cough array_intersect cough). — deceze
– deceze ♦, Commented Nov 7, 2011 at 6:08

Vikk · Accepted Answer · 2011-11-07 06:11:38Z

1

For one line magic:

echo implode('',array_intersect_key($showing,array_flip(str_split($result))));

answered Nov 7, 2011 at 6:11

Vikk

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1 Comment

user1033201 Over a year ago

codaddict & Vikk both of you are correct, great job! Just wonder i can have two accepted answer, those two codes are really great and for this time i pick Vikk.

codaddict · Accepted Answer · 2011-11-07 06:07:12Z

1

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";

answered Nov 7, 2011 at 6:07

codaddict

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Comments

thomasrutter · Accepted Answer · 2011-11-07 06:13:57Z

0

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.

edited Nov 7, 2011 at 6:13

answered Nov 7, 2011 at 6:07

thomasrutter

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