PHPHTTP客户端源码,云主机哪家的比较好用,谷歌vps免费1年,windows7 vps,云主机上海

🗣 Wd提问: PHPHTTP客户端源码

🤖 Ai回答:
以下是一个简单的 PHP HTTP 客户端实现，支持 GET 和 POST 请求，使用 `cURL` 扩展（推荐）或 `file_get_contents`（适用于简单场景）：

---

✅ 推荐方式：使用 cURL（功能强大、稳定）

```php
<?php

class HttpClient {
private $ch;

public function __construct() {
$this->ch = curl_init();
curl_setopt($this->ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($this->ch, CURLOPT_FOLLOWLOCATION, true);
curl_setopt($this->ch, CURLOPT_TIMEOUT, 30);
curl_setopt($this->ch, CURLOPT_USERAGENT, 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36');
}

public function get($url, $headers = []) {
curl_setopt($this->ch, CURLOPT_URL, $url);
curl_setopt($this->ch, CURLOPT_HTTPGET, true);
$this->setHeaders($headers);
return $this->execute();
}

public function post($url, $data = [], $headers = []) {
curl_setopt($this->ch, CURLOPT_URL, $url);
curl_setopt($this->ch, CURLOPT_POST, true);
if (is_array($data)) {
curl_setopt($this->ch, CURLOPT_POSTFIELDS, http_build_query($data));
} else {
curl_setopt($this->ch, CURLOPT_POSTFIELDS, $data);
}
$this->setHeaders($headers);
return $this->execute();
}

private function setHeaders($headers) {
if (!empty($headers)) {
curl_setopt($this->ch, CURLOPT_HTTPHEADER, array_map(function($k, $v) { return "$k: $v"; }, array_keys($headers), array_values($headers)));
}
}

private function execute() {
$response = curl_exec($this->ch);
$httpCode = curl_getinfo($this->ch, CURLINFO_HTTP_CODE);
$error = curl_error($this->ch);
curl_close($this->ch);
if ($error) {
throw new Exception("cURL error: " . $error);
}
return [
'body' => $response,
'status_code' => $httpCode,
'headers' => $this->getHeaders()
];
}

private function getHeaders() {
// 获取响应头（可选）
$headerSize = curl_getinfo($this->ch, CURLINFO_HEADER_SIZE);
$headerText = substr(curl_getinfo($this->ch, CURLINFO_HEADER_OUT), 0, $headerSize);
$headers = [];
foreach (explode("\r\n", $headerText) as $line) {
if (strpos($line, ':') !== false) {
list($key, $value) = explode(':', $line, 2);
$headers[trim($key)] = trim($value);
}
}
return $headers;
}

public function __destruct() {
if ($this->ch) {
curl_close($this->ch);
}
}
}

// 使用示例：
$client = new HttpClient();

try {
// GET 请求
$result = $client->get('https://httpbin.org/get', ['Accept' => 'application/json']);
echo "Status: " . $result['status_code'] . "\n";
echo "Body:\n" . $result['body'] . "\n";

// POST 请求
$postResult = $client->post('https://httpbin.org/post', ['name' => 'John', 'age' => 30], ['Content-Type' => 'application/x-www-form-urlencoded']);
echo "POST Status: " . $postResult['status_code'] . "\n";
echo "POST Body:\n" . $postResult['body'] . "\n";

} catch (Exception $e) {
echo "Error: " . $e->getMessage() . "\n";
}
```

---

✅ 简易方式：使用 file_get_contents（仅限简单场景）

```php
<?php

function simpleGet($url, $headers = []) {
$context = stream_context_create([
'http' => [
'method' => 'GET',
'header' => implode("\r\n", $headers),
'timeout' => 30
]
]);
$content = @file_get_contents($url, false, $context);
if ($content === false) {
throw new Exception("Failed to fetch URL: $url");
}
return $content;
}

// 示例
try {
$res = simpleGet('https://httpbin.org/get', ['User-Agent: MyClient/1.0']);
echo $res;
} catch (Exception $e) {
echo $e->getMessage();
}
```

---

📌 注意事项：

- `cURL` 支持 HTTPS、代理、认证、Cookie 等高级功能。
- `file_get_contents` 更轻量，但不支持 HTTPS 证书验证等安全特性（需开启 `allow_url_fopen` 并配置 SSL）。
- 建议在生产环境中使用 `cURL`。
- 可封装为类或工具函数，便于复用。

---

✅ 如需更复杂功能（如异步请求、重试机制、自动 JSON 解析等），可基于以上代码扩展，或引入 Guzzle 等第三方库（推荐用于项目开发）。

---

如果你需要支持特定协议（如 WebSocket、HTTP/2）、SSL 验证、超时重试、日志记录等功能，请告诉我，我可以为你定制更完整的版本。

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