Understanding coderbyte back-end challenge - php

Question

This is the challenge: In the PHP file, write a program to perform a GET request on the route https://coderbyte.com/api/challenges/json/age-counting which contains a data key and the value is a string which contains items in the format: key=STRING, age=INTEGER. Your goal is to count how many items exist that have an age equal to or greater than 50, and print this final value.
Example Input
{"data":"key=IAfpK, age=58, key=WNVdi, age=64, key=jp9zt, age=47"}
Once your function is working, take the final output string and replace all characters that appear in your ChallengeToken with --[CHAR]--.
Your ChallengeToken: ndv946kie1
Here's my code:
<?PHP
$ch = curl_init('https://coderbyte.com/api/challenges/json/age-counting');
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HEADER, 0);
$data = curl_exec($ch);
curl_close($ch);
//print_r(json_decode($data, true));
$arr = json_decode($data, true);
$items = explode(', ', $arr['data']);
$count = 0;
foreach ($items as $item){
//print_r($item . PHP_EOL);
if(str_starts_with($item,'age=')===true){
$age = explode('=',$item)[1];
if($age >= 50)
$count++;
}
}
$str = 'ndv946kie1';
$chars = str_split($str);
$final = '';
foreach ($chars as $char){
$final = $final . $count;
}
print_r($final);
?>
coderbyte says incorrect output, maybe I misunderstood the last instruction?

Answer 1

I had the same problem...
Giving below the code that worked for me:
<?php
$ch = curl_init('https://coderbyte.com/api/challenges/json/age-counting');
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HEADER, 0);
$data = curl_exec($ch);
curl_close($ch);
//print_r(json_decode($data, true));
$arr = json_decode($data, true);
$items = explode(', ', $arr['data']);
$count = 0;
foreach ($items as $item){
//print_r($item . PHP_EOL);
if(str_starts_with($item,'age=')===true){
$age = explode('=',$item)[1];
if($age >= 50)
$count++;
}
}
print_r($count);
?>

Answer 2

Please try with this
<?php
$ch = curl_init('https://coderbyte.com/api/challenges/json/age-counting');
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HEADER, 0);
$data = curl_exec($ch);
curl_close($ch);
$json_data = json_decode($data, true);
$items = explode(', ', $json_data['data']);
$count = array_reduce($items, function ($count, $item) {
if (strpos($item, 'age=') !== false) {
$age = explode('=', $item)[1];
if ($age >= 50) return $count + 1;
}
return $count;
}, 0);
print_r($count);