Fatal error: Call to undefined function openssl_random_pseudo_bytes()

Question

I am getting this exception when trying to run my PHP unit tests:

Fatal error: Call to undefined function openssl_random_pseudo_bytes()

What does it mean?

Answer 1

I had the same issue. I solved it by editing my php.ini file - changing ;extension=php_openssl.dll to extension=php_openssl.dll .

(For my installation, my php.ini file was located in my P:\Program Files\EasyPHP-12.1\conf_files\ directory.)

Answer 2

Your version of PHP wasn't compiled with the openssl module. If you are building from source, add the module like so:

cd /path/to/php-5.4/
./configure --with-openssl

Answer 3

It means you do not have the openssl extension enabled in your PHP install. It needs to be enabled for you to use openssl_* functions.

Answer 4

It means you possibly don't have openssl enabled.

If you are on windows its even easier to load it. Enable it from wamp icon on system tray.

Answer 5

Check your configuration php.ini:

; Directory in which the loadable extensions (modules) reside.
; http://php.net/extension-dir
;extension_dir = "./"
; On windows:
extension_dir = "ext"
extension=php_openssl.dll

Answer 6

Your php installation either does not have openssl enabled, or you could be running a version of php < 5.3.

To enable openssl, you must re-compile and install php with the "–with-openssl" flag. See php installation documentation

Answer 7

For me this error occurred because i had not configured openssl correctly for my PHP. This is the exact step i followed to rectify this error. https://stackoverflow.com/a/36070260/1221096