International PHP Conference Berlin 2021


这些函数的行为受 php.ini 中的设置影响。

cURL 配置选项
名字 默认 可修改范围 更新日志
curl.cainfo NULL PHP_INI_SYSTEM 自 PHP 5.3.7. 起有效
有关 PHP_INI_* 样式的更多详情与定义,见 配置可被设定范围


curl.cainfo string

CURLOPT_CAINFO 选项的一个默认值。这个值必须是一个绝对路径。

add a note add a note

User Contributed Notes 3 notes

ajith at pavanathara dot com
5 months ago
I was editing wrong php.ini file in last comment.

Even though loaded configuration path was showing as "D:\wamp64\bin\apache\apache2.4.37\bin\php.ini" inside phpinfo() of WAMP Server, It was actually loading "D:\wamp64\bin\apache\apache2.4.37\bin\phpForApache.ini"

Once I set both the variables inside phpForApache.ini, details are displayed in phpinfo() and error has gone without extra coding line.
ajith at pavanathara dot com
5 months ago
cURL error 60: SSL certificate problem: unable to get local issuer certificate

This local development error comes when curl.cainfo variable is not set correctly.

I faced this issue in PHP Version 7.3.1

In order to fix the error, I downloaded cacert.pem from

Set the following paths in php.ini


Even after adding the paths and restart Apache, Inside phpinfo(), both the paths were showing blank.

The error will go only if we set via php code of the project.

Example code worked for me :-

$guzzle = new \GuzzleHttp\Client(['verify' => 'D:\wamp64\bin\php\php7.3.1\extras\ssl\cacert.pem']);
ASchmidt at Anamera dot net
1 year ago
As of PHP 7.2 (Win 64) this directive, will NOT show in the phpinfo() even though it's set.

(In comparison, an openssl.cafile directive will show, if it's set to the exact same path).
To Top