PHP - SSL certificate error: unable to get local issuer certificate

Question

I\'m running PHP Version 5.6.3 as part of XAMPP on Windows 7.

When I try to use the Mandrill API, I\'m getting the following error:

Uncaught e

Answer 1

I had the same issue during building my app in AppVeyor.

• Download https://curl.haxx.se/ca/cacert.pem to c:\php
• Enable openssl echo extension=php_openssl.dll >> c:\php\php.ini
• Locate certificateecho curl.cainfo=c:\php\cacert.pem >> c:\php\php.ini

Answer 2

Thanks @Mladen Janjetovic,

Your suggestion worked for me in mac with ampps installed.

Copied: http://curl.haxx.se/ca/cacert.pem

To: /Applications/AMPPS/extra/etc/openssl/certs/cacert.pem

And updated php.ini with that path and restarted Apache:

[curl]
; A default value for the CURLOPT_CAINFO option. This is required to be an
; absolute path.
curl.cainfo="/Applications/AMPPS/extra/etc/openssl/certs/cacert.pem"
openssl.cafile="/Applications/AMPPS/extra/etc/openssl/certs/cacert.pem"

And applied same setting in windows AMPPS installation and it worked perfectly in it too.

[curl]
; A default value for the CURLOPT_CAINFO option. This is required to be an
; absolute path.
curl.cainfo="C:/Ampps/php/extras/ssl/cacert.pem"
openssl.cafile="C:/Ampps/php/extras/ssl/cacert.pem"

: Same for wamp.

[curl]
; A default value for the CURLOPT_CAINFO option. This is required to be an
; absolute path.
curl.cainfo="C:/wamp/bin/php/php5.6.16/extras/ssl/cacert.pem"
openssl.cafile="C:/wamp/bin/php/php5.6.16/extras/ssl/cacert.pem"

If you are looking for generating new SSL certificate using SAN for localhost, steps on this post worked for me on Centos 7 / Vagrant / Chrome Browser.

Answer 3

I found new Solution without any required certification to call curl only add two line code.

curl_setopt($ch, CURLOPT_FOLLOWLOCATION, TRUE);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);

Answer 4

elaborating on the above answers for server deployment.

$hostname = gethostname();
if($hostname=="mydevpc")
{
    curl_setopt($ch, CURLOPT_FOLLOWLOCATION, TRUE);
    curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
}

should do the trick for development environment without compromising the server when deployed.