PHP cURL: ответ сервера и его анализ

1. Получение данных от REST API с аутентификацией Bearer

$url = 'https://api.example.com/orders';
$token = 'your_bearer_token';

$ch = curl_init($url);
curl_setopt_array($ch, [
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_HTTPHEADER => [
        'Authorization: Bearer ' . $token,
        'Accept: application/json'
    ],
    CURLOPT_TIMEOUT => 30
]);
$response = curl_exec($ch);
$httpCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
curl_close($ch);

if ($httpCode === 200) {
    $orders = json_decode($response, true);
    print_r($orders);
} else {
    echo "Ошибка HTTP $httpCode";
}

Array
(
    [0] => Array
        (
            [id] => 123
            [status] => completed
        )
)

2. Отправка POST запроса с JSON данными и обработка ответа

$url = 'https://httpbin.org/post';
$data = ['name' => 'Василий', 'age' => 30];

$ch = curl_init($url);
curl_setopt_array($ch, [
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_POST => true,
    CURLOPT_POSTFIELDS => json_encode($data),
    CURLOPT_HTTPHEADER => ['Content-Type: application/json']
]);
$response = curl_exec($ch);
$httpCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
curl_close($ch);

echo "HTTP код: $httpCode\n";
echo $response;

HTTP код: 200
{
  "args": {},
  "data": "{\"name\":\"Василий\",\"age\":30}",
  "files": {},
  "form": {},
  "headers": {
    "Content-Type": "application/json"
  },
  "json": {
    "age": 30,
    "name": "Василий"
  },
  "url": "https://httpbin.org/post"
}

3. Загрузка файла через POST (multipart/form-data) с получением ответа

$url = 'https://httpbin.org/post';
$filePath = '/path/to/photo.jpg';

$ch = curl_init($url);
curl_setopt_array($ch, [
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_POST => true,
    CURLOPT_POSTFIELDS => [
        'image' => new CURLFile($filePath, 'image/jpeg', 'photo.jpg'),
        'description' => 'Test upload'
    ]
]);
$response = curl_exec($ch);
curl_close($ch);
echo $response;

{
  "files": {
    "image": "data:image/jpeg;base64,..."
  },
  "form": {
    "description": "Test upload"
  }
}

4. Множественные параллельные запросы через curl_multi и сбор ответов

$urls = [
    'https://api.example.com/user/1',
    'https://api.example.com/user/2',
    'https://api.example.com/user/3'
];

$mh = curl_multi_init();
$handles = [];

foreach ($urls as $i => $url) {
    $ch = curl_init($url);
    curl_setopt_array($ch, [
        CURLOPT_RETURNTRANSFER => true,
        CURLOPT_TIMEOUT => 10
    ]);
    curl_multi_add_handle($mh, $ch);
    $handles[$i] = $ch;
}

$running = null;
do {
    curl_multi_exec($mh, $running);
    curl_multi_select($mh);
} while ($running > 0);

$results = [];
foreach ($handles as $i => $ch) {
    $results[$i] = curl_multi_getcontent($ch);
    curl_multi_remove_handle($mh, $ch);
    curl_close($ch);
}
curl_multi_close($mh);

print_r($results);

Array
(
    [0] => {"id":1,"name":"Alice"}
    [1] => {"id":2,"name":"Bob"}
    [2] => {"id":3,"name":"Charlie"}
)

5. Работа с куками: получение и отправка Cookie

$cookieFile = '/tmp/cookies.txt';

// Первый запрос для получения куки
$ch = curl_init('https://example.com/login');
curl_setopt_array($ch, [
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_POST => true,
    CURLOPT_POSTFIELDS => 'username=admin&password=secret',
    CURLOPT_COOKIEJAR => $cookieFile
]);
$response = curl_exec($ch);
curl_close($ch);

// Второй запрос с передачей куки
$ch = curl_init('https://example.com/profile');
curl_setopt_array($ch, [
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_COOKIEFILE => $cookieFile
]);
$profile = curl_exec($ch);
curl_close($ch);
echo $profile;

6. Использование прокси и обработка ответа через прокси

$ch = curl_init('https://httpbin.org/ip');
curl_setopt_array($ch, [
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_PROXY => 'http://proxy.example.com:8080',
    CURLOPT_PROXYUSERPWD => 'user:pass',
    CURLOPT_PROXYTYPE => CURLPROXY_HTTP
]);
$response = curl_exec($ch);
$httpCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
curl_close($ch);
echo "HTTP код: $httpCode, ответ: $response";

7. Проверка времени выполнения и размера ответа

$ch = curl_init('https://example.com/large-file');
curl_setopt_array($ch, [
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_TIMEOUT => 30
]);
$start = microtime(true);
$response = curl_exec($ch);
$info = curl_getinfo($ch);
curl_close($ch);

$duration = microtime(true) - $start;
echo "Длительность: " . round($duration, 3) . " сек\n";
echo "HTTP код: " . $info['http_code'] . "\n";
echo "Размер контента: " . $info['size_download'] . " байт\n";
echo "Время загрузки: " . $info['total_time'] . " сек\n";