how to delete indexes on multidimensional arrays in php

Question

i have this multidimensional array.

Array
(
    [0] => Array
       (
          [firstName] => Hadi
          [lastName] => Pratama
          [age] => 22
       )

    [1] => Array
       (
          [firstName] => Jefri
          [lastName] => Ronaldo
          [age] => 21
       )

    [2] => Array
       (
          [firstName] => Rizky
          [lastName] => Aulia
          [age] => 20
       )
)

i want to put them into indexed array like this.

Array = ({"firstName":"Hadi","lastName":"Pratama","age":"22"},{"firstName":"Jefri","lastName":"Ronaldo","age":"21"},
{"firstName":"Rizky","lastName":"Aulia","age":"20"});

help me please.

[json_encode](https://www.php.net/manual/en/function.json-encode.php) — Rahul, Sep 18 '19 at 08:16
Hi and welcome to SO. Add code (edit your question) with what you have tried, otherwise your question may be closed and/or voted down. — Progrock, Sep 18 '19 at 08:31
dupe : https://stackoverflow.com/questions/2122233/converting-php-result-array-to-json — treyBake, Sep 18 '19 at 08:39
Possible duplicate of [Converting PHP result array to JSON](https://stackoverflow.com/questions/2122233/converting-php-result-array-to-json) — leonheess, Sep 18 '19 at 09:02

score 0 · Accepted Answer · answered Sep 18 '19 at 08:27

Not sure quite what your question is here (please clarify by editing your post).

Your output does not look like a Php array. More like JSON.

When you say remove indexes, could this be from having non sequential 0 counted indexes?

See below:

<?php

$people =
[
    [
        'name'=>'fred',
        'family'=>'flintstones'
    ],
    [
        'name'=>'barney',
        'family' => 'rubble'
    ],
    [
        'name'=> 'wilma',
        'family' => 'flintstones'
    ]
];

var_dump(json_encode($people));
unset($people[1]);
var_dump(json_encode($people));
var_dump(json_encode(array_values($people)));

Output:

string(116) "[{"name":"fred","family":"flintstones"},{"name":"barney","family":"rubble"},{"name":"wilma","family":"flintstones"}]"
string(88) "{"0":{"name":"fred","family":"flintstones"},"2":{"name":"wilma","family":"flintstones"}}"
string(80) "[{"name":"fred","family":"flintstones"},{"name":"wilma","family":"flintstones"}]"

You can use array_values to reindex arrays before encoding to JSON to 'remove' those indexes, and turn into a list of objects.

thank you for answering my question. to be honest this array is a json file that has been decoded and then I do some array filters and then the index appears. I don't know how to restore it to the previous format — Septian Arisandi, Sep 18 '19 at 09:03

score 0 · Answer 2 · answered Sep 18 '19 at 08:37

0

json_encode() : Returns the JSON representation of a value

echo json_encode($a);

Working example :- https://3v4l.org/EgOtE

answered Sep 18 '19 at 08:37

Rakesh Jakhar

6,380
2
11
20

score 0 · Answer 3 · edited Jun 20 '20 at 09:12

Question

Your array already has the correct dimensions, just run json_encode($array); over it and you will have the result you're looking for.

If you want to use an associative array, you'll have to be a bit more creative:

$result = [];
foreach($array as $index) {
   $result[$index['firstName']] = $index;
}

var_dump($result);

Result:

Array
(
    [Hadi] => Array
       (
          [firstName] => Hadi
          [lastName] => Pratama
          [age] => 22
       )

    [Jefri] => Array
       (
          [firstName] => Jefri
          [lastName] => Ronaldo
          [age] => 21
       )

    [Rizky] => Array
       (
          [firstName] => Rizky
          [lastName] => Aulia
          [age] => 20
       )
)

how to delete indexes on multidimensional arrays in php

3 Answers3

Question

Result: