PHP function introduction—curl_multi_getcontent(): Get the content of a cURL session

PHP function introduction—curl_multi_getcontent(): Get the content of a cURL session

In PHP development, we often need to request data from other servers through the network. And cURL (Client URL) is a powerful PHP extension library used for network communication in PHP. cURL provides a series of functions, one of which is curl_multi_getcontent(), which is used to obtain the content of a cURL session.

The curl_multi_getcontent() function is used to obtain the content of multiple cURL sessions created using the curl_multi_init() function. When using the curl_multi_exec() function to execute multiple cURL sessions, we can use the curl_multi_getcontent() function to obtain the return results of each session. The call to this function is very simple. You only need to pass in a cURL resource handle as a parameter.

The following is a sample code using the curl_multi_getcontent() function:

// 初始化cURL会话
$ch1 = curl_init('http://www.example.com/api1');
$ch2 = curl_init('http://www.example.com/api2');

// 创建一个新的cURL多个句柄
$mh = curl_multi_init();

// 将两个会话添加到多个句柄中
curl_multi_add_handle($mh, $ch1);
curl_multi_add_handle($mh, $ch2);

// 执行多个句柄的cURL会话
do {
    $status = curl_multi_exec($mh, $active);
} while ($status === CURLM_CALL_MULTI_PERFORM || $active);

// 循环获取每个会话的内容
$contents = array();
foreach([$ch1, $ch2] as $ch) {
    $content = curl_multi_getcontent($ch);
    $contents[] = $content;
}

// 关闭多个句柄的cURL会话
curl_multi_remove_handle($mh, $ch1);
curl_multi_remove_handle($mh, $ch2);
curl_multi_close($mh);

// 输出获取到的内容
var_dump($contents);

In the above code, we first initialize two cURL sessions using the curl_init() function and add them to In a cURL session with multiple handles. These sessions were then executed using the curl_multi_exec() function. During execution, we use the curl_multi_getcontent() function to get the content of each session and save the content into an array. Finally, use the curl_multi_remove_handle() function and curl_multi_close() function to close multiple sessions.

It should be noted that before using the curl_multi_getcontent() function, we must first ensure that the session has been executed, otherwise the content may not be obtained correctly.

In summary, the curl_multi_getcontent() function is a very useful function that can be used to obtain the content of multiple cURL sessions. When requesting multiple APIs concurrently, you can use it to obtain the return results of each session to facilitate subsequent processing.

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