PHP curl库有哪些高级用法

PHP的cURL库提供了许多高级功能，可以帮助您更好地处理HTTP请求。以下是一些常见的高级用法：

1. 发送POST请求：

$url = "https://example.com/api"; $data = array("key" => "value"); $ch = curl_init($url); curl_setopt($ch, CURLOPT_RETURNTRANSFER, true); curl_setopt($ch, CURLOPT_POST, true); curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query($data)); $response = curl_exec($ch); curl_close($ch); 

2. 设置自定义请求头：

$headers = array(     "Content-Type: application/json",     "Authorization: Bearer YOUR_ACCESS_TOKEN" ); $ch = curl_init($url); curl_setopt($ch, CURLOPT_RETURNTRANSFER, true); curl_setopt($ch, CURLOPT_HTTPHEADER, $headers); $response = curl_exec($ch); curl_close($ch); 

3. 上传文件：

$file = "@/path/to/your/file.jpg"; $data = array("file" => $file); $ch = curl_init($url); curl_setopt($ch, CURLOPT_RETURNTRANSFER, true); curl_setopt($ch, CURLOPT_POST, true); curl_setopt($ch, CURLOPT_POSTFIELDS, $data); $response = curl_exec($ch); curl_close($ch); 

4. 使用代理：

$proxy = "http://proxy.example.com:8080"; $ch = curl_init($url); curl_setopt($ch, CURLOPT_RETURNTRANSFER, true); curl_setopt($ch, CURLOPT_PROXY, $proxy); $response = curl_exec($ch); curl_close($ch); 

5. 设置超时和连接超时：

$ch = curl_init($url); curl_setopt($ch, CURLOPT_RETURNTRANSFER, true); curl_setopt($ch, CURLOPT_TIMEOUT, 30); // 设置超时时间为30秒 curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 10); // 设置连接超时时间为10秒 $response = curl_exec($ch); curl_close($ch); 

6. 关注请求进度：

function progressCallback($downloadSize, $downloaded, $uploadSize, $uploaded) {     echo "Downloaded: $downloaded / $downloadSize\n";     echo "Uploaded: $uploaded / $uploadSize\n"; }  $ch = curl_init($url); curl_setopt($ch, CURLOPT_RETURNTRANSFER, true); curl_setopt($ch, CURLOPT_NOPROGRESS, false); curl_setopt($ch, CURLOPT_PROGRESSFUNCTION, 'progressCallback'); $response = curl_exec($ch); curl_close($ch); 

这些高级用法只是cURL库功能的一部分。您可以查阅PHP官方文档以获取更多关于cURL库的信息：https://www.php.net/manual/en/book.curl.php