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PHP function introduction—curl_close(): Close a cURL session
cURL (Client URL Library) is a PHP extension library for sending and receiving HTTP requests. It provides rich functionality, including sending POST and GET requests, setting request headers, handling Cookies, etc. After making a cURL request, we need to close the cURL session in time to release resources. curl_close()
The function is used to close a cURL session.
curl_close()
The syntax of the function is as follows:
curl_close(resource $ch): void
$ch
is a cURL handle, which is passed curl_init()
Created to represent a cURL session. curl_close()
will close the specified cURL session and release related resources.
The following is a sample code using the curl_close()
function:
// 创建一个 cURL 句柄 $ch = curl_init(); // 设置 cURL 选项 curl_setopt($ch, CURLOPT_URL, "https://www.example.com"); curl_setopt($ch, CURLOPT_RETURNTRANSFER, true); // 执行 cURL 请求 $result = curl_exec($ch); // 关闭 cURL 会话 curl_close($ch);
In the above sample code, we first pass curl_init()
The function creates a cURL handle $ch
. Then, set cURL options through the curl_setopt()
function, such as setting the requested URL and whether to return a response result. Next, we call the curl_exec()
function to execute the cURL request and save the response result to the variable $result
. Finally, close the cURL session via the curl_close()
function.
Using the curl_close()
function to close the cURL session has the following benefits:
It should be noted that once the cURL session is closed, we can no longer use the cURL handle to send and receive requests. If we need to send a new request, we need to recreate a cURL handle.
Summary:
curl_close()
The function is a PHP function used to close a cURL session. After making a cURL request, in order to save resources, improve performance and release memory, we need to call the curl_close()
function in time to close the cURL session. By studying the sample code, we have mastered the basic usage of the curl_close()
function and the steps to use it to close a cURL session. In actual development, we should be good at using the curl_close()
function to ensure the robustness and performance of the code.
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