CODEWITHSUNDEEP
php
Prashant Shukla
Prashant Shukla

Reputation: 261

How can make array of string

$var = {"4":true,"6":true,"8":true}

In The above string I want to get numbers into array.

Need: $var2 = [[0]=>4, [1]=>6, [2]=>8];

All response will be appreciated.

Upvotes: 2

Views: 63

Answers (3)

Murad Hasan
Murad Hasan

Reputation: 9583

As i comment, use array_keys, and json_decode.

I don't believe that this question has an answer, So i did't answer it. But i did it later.

You have an json, so you need to use json_decode now you jave an array where your keys are the desired value. so use array_keys.

$var = '{"4":true,"6":true,"8":true}';
$arr = json_decode($var, true);

echo '<pre>';
print_r(array_keys($arr));

Result:

Array
(
    [0] => 4
    [1] => 6
    [2] => 8
)

Upvotes: 1

dimlucas
dimlucas

Reputation: 5141

First you decode the string using json_decode, the second argument means that the function should return an associative array and non an array of objects. This willl help up get the array keys.

$decoded = json_decode($var, true);

You get the array keys with this loop and place them in $var

foreach($decoded as $key => $value){
   $var2[] = $key;
}

Upvotes: 1

Mihai Matei
Mihai Matei

Reputation: 24276

You should use json_decode and array_keys to accomplish it:

array_keys(json_decode($var, true));

Upvotes: 3

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