CODEWITHSUNDEEP
phparraysjson
gk103
gk103

Reputation: 377

Not able to get contents of JSON / Array in PHP

new to php.... can't seem to get the contents of this array... ie. trying to do: $key = var0 and $value = string0

This is what I am trying the following, with no success:

$getJSON = [
    {
        "item0": [
            {"var0":"string0"},
            {"var1":"string1"},
            {"var2":"string2"},
            {"var3":"string3"}
        ]
    }
]

$arr = json_decode( $getJSON, true );

$test1 = $arr[0]['item0']['var0'];
$test2 = $arr['item0']['var0'];

Upvotes: 0

Views: 51

Answers (3)

Maulik patel
Maulik patel

Reputation: 2432

First change Desing of json pattern

$getJSON = '{"item0":[
                        {"var0":"string0"},
                        {"var1":"string1"},
                        {"var2":"string2"},
                        {"var3":"string3"}
                     ]
            }';

use json_decode function for get json data

$arr = json_decode( $getJSON);

echo $arr->item0[0]->var0.'</br>';
echo $arr->item0[1]->var1.'</br>';
echo $arr->item0[2]->var2.'</br>';
echo $arr->item0[3]->var3.'</br>';

Upvotes: 0

Barmar
Barmar

Reputation: 780724

The argument to json_decode() has to be a string, not an array. So put it in quotes.

$getJSON = '[
    {
        "item0": [
            {"var0":"string0"},
            {"var1":"string1"},
            {"var2":"string2"},
            {"var3":"string3"}
        ]
    }
]';

After you decode, $arr[0]['item0'] contains an array, so to get the var0 element it would be $arr[0]['item0'][0]['var0'].

Having an array of separate objects, each with different keys, is probably not a great design. It would be better if the you did it like this:

$getJSON = '{
    "item0": {
        "var0":"string0",
        "var1":"string1",
        "var2":"string2",
        "var3":"string3"
    }
}'

Then the value you want would be:

$arr['item0']['var0']

Upvotes: 1

sensorario
sensorario

Reputation: 21600

First of all fix your json part:

$json = '{
    "item0": [
        {"var0": "string0"},
        {"var1": "string1"},
        {"var2": "string2"},
        {"var3": "string3"}
    ]
}';

Now if you var_dump the json_decoded content with

json_decode($json, JSON_PRETTY_PRINT);

you will obtain

array(1) {


'item0' =>
  array(4) {
    [0] =>
    array(1) {
      'var0' =>
      string(7) "string0"
    }
    [1] =>
    array(1) {
      'var1' =>
      string(7) "string1"
    }
    [2] =>
    array(1) {
      'var2' =>
      string(7) "string2"
    }
    [3] =>
    array(1) {
      'var3' =>
      string(7) "string3"
    }
  }
}

This means that you can get values with:

$decoded = json_decode($json, true);

var_dump($decoded['item0'][0]['var0']);

Upvotes: 1

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