how to count sum of values from json object with php-CodePudding

I have a couple of json files in a directory data. Each json file looks like below:

{
    "id": "id_2021-04-01_1300",
    "starttime": "13:00",
    "endtime": "18:00",
    "hours": 5
}

To count the sum of all hours together from all json files, i have this code in php:

$files = glob('data/*.json'); // all json-files in array
foreach($files as $file) {
    $hours_arrays[] = json_decode(file_get_contents($file), true);
}
$total_hours = 0;
foreach($hours_arrays as $key => $val) {
    $total_hours  = $val['hours'];
}

According to this code, $total_hours should contain the sum of all the hours from all json files. But i got back 0. What i am doing wrong?

CodePudding user response：

I just ran your code and it works fine. https://prnt.sc/1xzcibj. Debug that your files have correct path and you are recieving the content. Also check the parsed content of files in variable $hours_arrays. It should look like variable on my screenshot

CodePudding user response：

I can’t comment on my account yet but I suspect you want to access it as an object

$val->hours

Rather than an array as the json shows an object not an array.

Edit : bad answer I didn’t see the true flag on json decode