Invalid argument supplied for foreach() - Array

Question

Good morning.

I’m trying to consume a json in PHP but I’m having this problem:

Warning: Invalid argument supplied for foreach() in D: xampp htdocs api consumir index.php on line 7

Array Code - JSON

http://jsfiddle.net/svbL9cjb/

PHP code

<?php
$json_file = file_get_contents("http://localhost/api/carne/retornofim.php");

$json_str = json_decode($json_file, true);
$itens = $json_str['nodes'];

foreach ( $itens as $e ) 
{ 
    echo $e['title']."<br>"; 
}
?>

http://phpfiddle.org/main/code/34uy-zf37

Att

Answer 1

Warning: Invalid argument supplied for foreach() in D: xampp htdocs api consumir index.php on line 7

This message occurs because the variable $itens is not an array, or a possible object to be used inside the foreach, and analyzing your json does not exist these keys that are in the code (nodes or title).

So before using the foreach, or trying to get some key put:

$json_file = file_get_contents("http://localhost/api/carne/retornofim.php");
var_export($json_file);
die();

So you will be able to see the return before manipulating the data.

To show more information:

header('Content-Type: text/plain');
error_reporting(~0); ini_set('display_errors', 1);
$url = 'http://localhost/api/carne/retornofim.php';
$results = file_get_contents($url);
var_dump($http_response_header, $results);
die();

Source: PHP: "file_get_contents()" returning NULL from content-verified URL