What is the usage of PHP curl_init

PHP curl_init is used to initialize a cURL session. Its usage syntax is "resource curl_init ([ string $url = NULL ] )", and the return value is a cURL handle.

The operating environment of this article: windows7 system, PHP7.1 version, DELL G3 computer

What is the usage of PHP curl_init?

curl_init — Initialize a cURL session

Description

resource curl_init ([ string $url = NULL ] )

Initialize a new session and return a cURL handle for curl_setopt(), curl_exec() and curl_close() Function usage.

Parameter url: If this parameter is provided, the CURLOPT_URL option will be set to this value. You can also set this value manually using the curl_setopt() function.

Return value: If successful, return a cURL handle, return FALSE on error.

Example

Initialize a new cURL session and obtain a web page

<?php
// 创建一个新cURL资源
$ch = curl_init();
// 设置URL和相应的选项
curl_setopt($ch, CURLOPT_URL, "http://www.runoob.com/");
curl_setopt($ch, CURLOPT_HEADER, 0);
// 抓取URL并把它传递给浏览器
curl_exec($ch);
// 关闭cURL资源，并且释放系统资源
curl_close($ch);
?>

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