Using PHP 7.4 & Ubuntu 20.04 LTS

I have installed GRPC using these steps:

```
sudo apt-get install autoconf zlib1g-dev php-dev php-pear
sudo pecl install grpc

```

I then added the following line to the folder shown for both `cli` and `fpm`

```
extension=grpc.so
/etc/php/7.4/cli/php.ini
/etc/php/7.4/fpm/php.ini

```

When I then run `php` I get the following error:

```
PHP Warning:  PHP Startup: Unable to load dynamic library 'grpc.so' (tried: /usr/lib/php/20190902/grpc.so (/usr/lib/php/20190902/grpc.so: cannot open shared object file: No such file or directory), /usr/lib/php/20190902/grpc.so.so (/usr/lib/php/20190902/grpc.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0

```

After install `pecl` outputted that it was installed here:

```
/usr/lib/php/20200930/grpc.so

```

Trying to be clever I thought I could just copy the file to where php was expecting it:

```
sudo cp /usr/lib/php/20200930/grpc.so /usr/lib/php/20190902/grpc.so

```

But when you run `php` after you get the following:

```
PHP Warning:  PHP Startup: grpc: Unable to initialize module
Module compiled with module API=20200930
PHP    compiled with module API=20190902
These options need to match

```

Any ideas?