curl_version

(PHP 4 >= 4.0.2, PHP 5, PHP 7, PHP 8)

curl_version — Gets cURL version information

Description

curl_version(): array|false

Returns information about the cURL version.

Parameters

This function has no parameters.

Return Values

Returns an associative array with the following elements:

Key	Value description
version_number	cURL 24 bit version number
version	cURL version number, as a string
ssl_version_number	OpenSSL 24 bit version number
ssl_version	OpenSSL version number, as a string
libz_version	zlib version number, as a string
host	Information about the host where cURL was built
age
features	A bitmask of the `CURL_VERSION_XXX` constants
protocols	An array of protocols names supported by cURL

Changelog

Version	Description
8.0.0	The optional `age` parameter has been removed.
7.4.0	The optional `age` parameter has been deprecated; if a value is passed, it is ignored.

Examples

Example #1 curl_version() example

This example will check which features that's available in cURL build by using the 'features' bitmask returned by curl_version().


<?php
// Get curl version array
$version = curl_version();

// These are the bitfields that can be used 
// to check for features in the curl build
$bitfields = Array(
            'CURL_VERSION_IPV6', 
            'CURL_VERSION_KERBEROS4', 
            'CURL_VERSION_SSL', 
            'CURL_VERSION_LIBZ'
            );


foreach($bitfields as $feature)
{
    echo $feature . ($version['features'] & constant($feature) ? ' matches' : ' does not match');
    echo PHP_EOL;
}
?>