When I try to make a request with POST to a script that has this line:

```
$decrypted_data = openssl_decrypt($encrypted_data, 'AES-256-CBC', $key);

```

I get the following error:

> 
> Fatal error: Call to undefined function openssl\_decrypt() in mypath/usuario\_webservice.php on line 11
> 
> 
> 

After some research the common reasons would be entering the wrong name for the function or the openssl extension not being installed on my web server. It turns out that it is installed as I checked with the support. So, what else should I be looking for?