multidimension Array to string Conversion

Question

I have two arrays I wan to convert in two strings..

One Array in first string 2nd Array in Second String

Like this array1 = 5,6,7,8

Like this array2 = 15,16,17,18

Should be in loop no matter How many rows there are

and Soo on.. Help me please I am stuck Here from Many days...

Array
(
    [0] => Array
        (
            [0] => 5
            [ride_id] => 5
        )

    [1] => Array
        (
            [0] => 6
            [ride_id] => 6
        )

    [2] => Array
        (
            [0] => 7
            [ride_id] => 7
        )

    [3] => Array
        (
            [0] => 8
            [ride_id] => 8
        )


)
Array
(
    [0] => Array
        (
            [0] => 15
            [ride_id] => 15
        )

    [1] => Array
        (
            [0] => 16
            [ride_id] => 16
        )

    [2] => Array
        (
            [0] => 17
            [ride_id] => 17
        )

    [3] => Array
        (
            [0] => 18
            [ride_id] => 18
        )
)

Why don't you create the arrays the way you want them when you're fetching from the database, instead of making 2-dimensional arrays? And use `mysqli_fetch_assoc()` instead of `mysqli_fetch_array()` so you don't get two elements for each column. — Barmar, Mar 03 '21 at 23:47
But Problem is this I want just values in a string with comma separation.. — Ali Hamza Majeed, Mar 04 '21 at 01:00
In a single string with comma separation Array ( [0] => Array ( [ride_id] => 5 ) [1] => Array ( [ride_id] => 6 ) [2] => Array ( [ride_id] => 7 ) ) — Ali Hamza Majeed, Mar 04 '21 at 01:01
I know what you want, isn't that what my answer shows how to do? — Barmar, Mar 04 '21 at 01:05

score 1 · Answer 1 · answered Mar 03 '21 at 23:49

1

Use array_column() to get just the ride_id element from each nested array, and use implode() to combine them into a string.

$string1 = implode(',', array_column($array1, 'ride_id'));
$string2 = implode(',', array_column($array2, 'ride_id'));

answered Mar 03 '21 at 23:49

Barmar

741,623
53
500
612

AbraCadaver · Answer 2 · 2021-03-16T17:04:47.673

0

I like the other answer as I'm a big fan of array_column. Another way, if the values are unique, especially if you don't know the column names, is to flatten array_merge, make unique array_unique and then implode:

$result1 = implode(',', array_unique(array_merge(...$array1)));
$result2 = implode(',', array_unique(array_merge(...$array2)));

edited Mar 16 '21 at 17:04

answered Mar 04 '21 at 00:07

AbraCadaver

78,200
7
66
87

`array_unique()` doesn't seem like a good idea if there are two rows with the same value. – Barmar Mar 04 '21 at 01:06
Yeah, wasn't thinking about that as commonly ids are unique. – AbraCadaver Mar 04 '21 at 01:08
True, it's probably OK in this particular case, but it doesn't generalize well. – Barmar Mar 04 '21 at 01:09

multidimension Array to string Conversion

2 Answers2