PHP: How to access array element values using array-index [duplicate]

Question

How to access array element values using array-index?

<?
$json = '{
    "dynamic":{
       "pageCount":"12",
       "tableCount":"1"
    }
}';

$arr = json_decode($json, true);

echo $arr['dynamic']['pageCount']; // working
echo $arr[0]['pageCount']; // not working
?>

I will not know what is there in 'dynamic', so i want to access pageCount values dynamically?

foreach will iterate over the array, providing both keys and values. reset will return the first value regardless of key (you can also get the key with key). array_values will replace the keys with auto-incrementing integers. What exactly is your use case? — Jon
– Jon, Commented Sep 5, 2012 at 8:24

Tufan Barış Yıldırım · Accepted Answer · 2012-09-05 08:31:38Z

14

array_values is function you are looking for

Examples:

<?php
$json = '{
    "dynamic":{
       "pageCount":"12",
       "tableCount":"1"
    }
}';

$arr = json_decode($json, true);
echo $arr['dynamic']['pageCount']; // working

$arr = array_values($arr);
echo $arr[0]['pageCount']; // NOW working

?>

answered Sep 5, 2012 at 8:31

Tufan Barış Yıldırım

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Comments

Dan Grossman · Accepted Answer · 2012-09-05 08:36:01Z

1

$arr = json_decode($json, true);
foreach ($arr as $key => $value) {
    if (isset($value['pageCount'])) {
        //do something with the page count
    }
}

If the structure is always a single nested JS object:

$obj = current($arr);
echo $obj['pageCount'];

edited Sep 5, 2012 at 8:36

answered Sep 5, 2012 at 8:29

Dan Grossman

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3 Comments

Shiv A Over a year ago

OK, got it working. But was thinking if there is direct access without loops

Jon Over a year ago

@ShivaramAllva: It can be so direct that it hurts: extract(reset($arr));. As I said in the comment -- what's the use case?

Dan Grossman Over a year ago

I have updated my answer with a non-looping solution that will work only if the structure is always a single nested JS object as in the example.

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