Answers for "php get keys in json"

read key value json php

// json object.
    $contents = '{"firstName":"John", "lastName":"Doe"}';

    // Option 1: through the use of an array.
    $jsonArray = json_decode($contents,true);

    $key = "firstName";

    $firstName = $jsonArray[$key];


    // Option 2: through the use of an object.
    $jsonObj = json_decode($contents);

    $firstName = $jsonObj->$key;

php get all array keys in json

foreach($json->entries as $row) {
    foreach($row as $key => $val) {
        echo $key . ': ' . $val;
        echo '<br>';
    }
}