<?php
// Initialize cURL session to send a GET request
$url = "https://c...content-available-to-author-only...e.com/api/challenges/json/age-counting";
 
// Create a cURL handle
$ch = curl_init();
 
// Set the cURL options
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);  // Return the response as a string
curl_setopt($ch, CURLOPT_HTTPGET, true); // Use GET method
 
// Execute the cURL session and store the response
$response = curl_exec($ch);
 
// Check if the request was successful
if (curl_errno($ch)) {
    echo 'Curl error: ' . curl_error($ch);
} else {
    // Close the cURL session
    curl_close($ch);
 
    // Decode the JSON response into an associative array
    $data = json_decode($response, true);
 
    // Extract the 'data' value from the response
    $dataString = $data['data'];
 
    // Split the data string by commas to separate key-value pairs
    $pairs = explode(', ', $dataString);
 
    // Initialize count for items with age >= 50
    $count = 0;
 
    // Loop through each pair and extract the age
    foreach ($pairs as $pair) {
        // Check if the pair contains an "age" key-value pair
        if (strpos($pair, 'age=') !== false) {
            // Extract the age value using regular expression
            preg_match('/age=(\d+)/', $pair, $matches);
 
            // If we found a valid match for the age
            if (isset($matches[1])) {
                $age = (int)$matches[1];
 
                // Check if the age is greater than or equal to 50
                if ($age >= 50) {
                    $count++;
                }
            }
        }
    }
 
    // Output the final count
    echo "Number of items with age >= 50: $count\n";
}
?>
 

PD9waHAKLy8gSW5pdGlhbGl6ZSBjVVJMIHNlc3Npb24gdG8gc2VuZCBhIEdFVCByZXF1ZXN0CiR1cmwgPSAiaHR0cHM6Ly9jLi4uY29udGVudC1hdmFpbGFibGUtdG8tYXV0aG9yLW9ubHkuLi5lLmNvbS9hcGkvY2hhbGxlbmdlcy9qc29uL2FnZS1jb3VudGluZyI7CgovLyBDcmVhdGUgYSBjVVJMIGhhbmRsZQokY2ggPSBjdXJsX2luaXQoKTsKCi8vIFNldCB0aGUgY1VSTCBvcHRpb25zCmN1cmxfc2V0b3B0KCRjaCwgQ1VSTE9QVF9VUkwsICR1cmwpOwpjdXJsX3NldG9wdCgkY2gsIENVUkxPUFRfUkVUVVJOVFJBTlNGRVIsIHRydWUpOyAgLy8gUmV0dXJuIHRoZSByZXNwb25zZSBhcyBhIHN0cmluZwpjdXJsX3NldG9wdCgkY2gsIENVUkxPUFRfSFRUUEdFVCwgdHJ1ZSk7IC8vIFVzZSBHRVQgbWV0aG9kCgovLyBFeGVjdXRlIHRoZSBjVVJMIHNlc3Npb24gYW5kIHN0b3JlIHRoZSByZXNwb25zZQokcmVzcG9uc2UgPSBjdXJsX2V4ZWMoJGNoKTsKCi8vIENoZWNrIGlmIHRoZSByZXF1ZXN0IHdhcyBzdWNjZXNzZnVsCmlmIChjdXJsX2Vycm5vKCRjaCkpIHsKICAgIGVjaG8gJ0N1cmwgZXJyb3I6ICcgLiBjdXJsX2Vycm9yKCRjaCk7Cn0gZWxzZSB7CiAgICAvLyBDbG9zZSB0aGUgY1VSTCBzZXNzaW9uCiAgICBjdXJsX2Nsb3NlKCRjaCk7CgogICAgLy8gRGVjb2RlIHRoZSBKU09OIHJlc3BvbnNlIGludG8gYW4gYXNzb2NpYXRpdmUgYXJyYXkKICAgICRkYXRhID0ganNvbl9kZWNvZGUoJHJlc3BvbnNlLCB0cnVlKTsKCiAgICAvLyBFeHRyYWN0IHRoZSAnZGF0YScgdmFsdWUgZnJvbSB0aGUgcmVzcG9uc2UKICAgICRkYXRhU3RyaW5nID0gJGRhdGFbJ2RhdGEnXTsKCiAgICAvLyBTcGxpdCB0aGUgZGF0YSBzdHJpbmcgYnkgY29tbWFzIHRvIHNlcGFyYXRlIGtleS12YWx1ZSBwYWlycwogICAgJHBhaXJzID0gZXhwbG9kZSgnLCAnLCAkZGF0YVN0cmluZyk7CgogICAgLy8gSW5pdGlhbGl6ZSBjb3VudCBmb3IgaXRlbXMgd2l0aCBhZ2UgPj0gNTAKICAgICRjb3VudCA9IDA7CgogICAgLy8gTG9vcCB0aHJvdWdoIGVhY2ggcGFpciBhbmQgZXh0cmFjdCB0aGUgYWdlCiAgICBmb3JlYWNoICgkcGFpcnMgYXMgJHBhaXIpIHsKICAgICAgICAvLyBDaGVjayBpZiB0aGUgcGFpciBjb250YWlucyBhbiAiYWdlIiBrZXktdmFsdWUgcGFpcgogICAgICAgIGlmIChzdHJwb3MoJHBhaXIsICdhZ2U9JykgIT09IGZhbHNlKSB7CiAgICAgICAgICAgIC8vIEV4dHJhY3QgdGhlIGFnZSB2YWx1ZSB1c2luZyByZWd1bGFyIGV4cHJlc3Npb24KICAgICAgICAgICAgcHJlZ19tYXRjaCgnL2FnZT0oXGQrKS8nLCAkcGFpciwgJG1hdGNoZXMpOwoKICAgICAgICAgICAgLy8gSWYgd2UgZm91bmQgYSB2YWxpZCBtYXRjaCBmb3IgdGhlIGFnZQogICAgICAgICAgICBpZiAoaXNzZXQoJG1hdGNoZXNbMV0pKSB7CiAgICAgICAgICAgICAgICAkYWdlID0gKGludCkkbWF0Y2hlc1sxXTsKCiAgICAgICAgICAgICAgICAvLyBDaGVjayBpZiB0aGUgYWdlIGlzIGdyZWF0ZXIgdGhhbiBvciBlcXVhbCB0byA1MAogICAgICAgICAgICAgICAgaWYgKCRhZ2UgPj0gNTApIHsKICAgICAgICAgICAgICAgICAgICAkY291bnQrKzsKICAgICAgICAgICAgICAgIH0KICAgICAgICAgICAgfQogICAgICAgIH0KICAgIH0KCiAgICAvLyBPdXRwdXQgdGhlIGZpbmFsIGNvdW50CiAgICBlY2hvICJOdW1iZXIgb2YgaXRlbXMgd2l0aCBhZ2UgPj0gNTA6ICRjb3VudFxuIjsKfQo/Pgo=