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PHP Manual

## Runtime Configuration

The behaviour of these functions is affected by settings in php.ini.

cURL Configuration Options
Name | Default | Changeable | Changelog
--- | --- | --- | ---
curl.cainfo | NULL | PHP_INI_SYSTEM | Available since PHP 5.3.7.

For further details and definitions of the PHP_INI_* modes, see the Where a configuration setting may be set.

Here's a short explanation of the configuration directives.

`curl.cainfo` string

  A default value for the `CURLOPT_CAINFO` option. This is required to be an absolute path.

Installation
Resource Types
Installing/Configuring
PHP Manual