PHPcURL与HTTP客户端封装

PHP cURL与HTTP客户端封装cURL是PHP发送HTTP请求的标准方式。配合第三方API、抓取网页、上传文件都很方便。今天说说cURL的各种用法。最基本的GET请求。phpfunction httpGet(string $url): array{$ch curl_init($url);curl_setopt_array($ch, [CURLOPT_RETURNTRANSFER true,CURLOPT_TIMEOUT 30,CURLOPT_FOLLOWLOCATION true,CURLOPT_SSL_VERIFYPEER true,]);$body curl_exec($ch);$httpCode curl_getinfo($ch, CURLINFO_HTTP_CODE);$error curl_error($ch);curl_close($ch);if ($error) throw new RuntimeException(请求失败: $error);return [body $body, http_code $httpCode];}?封装HTTP客户端方便复用。phpclass HttpClient{private array $headers [];private int $timeout 30;public function setHeader(string $name, string $value): void{$this-headers[$name] $value;}public function get(string $url, array $query []): array{if (!empty($query)) {$url . (strpos($url, ?) false ? ? : ) . http_build_query($query);}return $this-request(GET, $url);}public function post(string $url, mixed $data []): array{return $this-request(POST, $url, $data);}private function request(string $method, string $url, mixed $data null): array{$ch curl_init($url);$options [CURLOPT_RETURNTRANSFER true,CURLOPT_TIMEOUT $this-timeout,CURLOPT_FOLLOWLOCATION true,];if ($method POST) {$options[CURLOPT_POST] true;if (is_array($data)) {$options[CURLOPT_POSTFIELDS] http_build_query($data);} else {$options[CURLOPT_POSTFIELDS] $data;$this-headers[Content-Type] application/json;}}if (!empty($this-headers)) {$headerLines [];foreach ($this-headers as $name $value) {$headerLines[] $name: $value;}$options[CURLOPT_HTTPHEADER] $headerLines;}curl_setopt_array($ch, $options);$body curl_exec($ch);$httpCode curl_getinfo($ch, CURLINFO_HTTP_CODE);$error curl_error($ch);curl_close($ch);return [body $body, http_code $httpCode, error $error];}}$client new HttpClient();$client-setHeader(Authorization, Bearer token123);$client-setHeader(Accept, application/json);$result $client-get(https://api.example.com/users, [page 1]);echo 状态码: {$result[http_code]}\n;?批量请求用curl_multi同时发送提高效率。phpfunction batchRequest(array $urls): array{$multi curl_multi_init();$handles [];foreach ($urls as $id $url) {$ch curl_init($url);curl_setopt_array($ch, [CURLOPT_RETURNTRANSFER true, CURLOPT_TIMEOUT 10]);curl_multi_add_handle($multi, $ch);$handles[$id] $ch;}$running null;do { curl_multi_exec($multi, $running); curl_multi_select($multi); } while ($running 0);$results [];foreach ($handles as $id $ch) {$results[$id] [body curl_multi_getcontent($ch),http_code curl_getinfo($ch, CURLINFO_HTTP_CODE),];curl_multi_remove_handle($multi, $ch);curl_close($ch);}curl_multi_close($multi);return $results;}?文件上传用curl_file_create。phpfunction uploadFile(string $url, string $filePath, string $fieldName file): array{$ch curl_init($url);curl_setopt_array($ch, [CURLOPT_RETURNTRANSFER true,CURLOPT_POST true,CURLOPT_POSTFIELDS [$fieldName curl_file_create($filePath)],CURLOPT_TIMEOUT 60,]);$body curl_exec($ch);$httpCode curl_getinfo($ch, CURLINFO_HTTP_CODE);curl_close($ch);return [body $body, http_code $httpCode];}?cURL在PHP中很常用对接第三方API、抓取网页、上传下载文件都离不开。用好cURL能让你在处理HTTP请求时事半功倍。