Unable to locate package php7.0-phalcon

lsb_release -a output

No LSB modules are available.
Distributor ID: Debian
Description:    Debian GNU/Linux 9.8 (stretch)
Release:    9.8
Codename:   stretch

cat /etc/apt/sources.list.d/phalcon_stable.list output

# this file was generated by packagecloud.io for
# the repository at https://packagecloud.io/phalcon/stable

deb https://packagecloud.io/phalcon/stable/debian/ stretch main
deb-src https://packagecloud.io/phalcon/stable/debian/ stretch main

But I get Unable to locate package php7.0-phalcon when I run apt-get install php7.0-phalcon.

There is no output in apt-cache search php7.0-phalcon command.

I followed this command curl -s https://packagecloud.io/install/repositories/phalcon/stable/script.deb.sh | sudo bash to add repository.

And I also run apt-get update multiple times

edited Feb '19

apt-cache search phalcon and apt show php7.0-phalcon

what do you have in there as a result?

AFAIK latest Debian/GNU has PHP version > 7.0 ? EDIT: I was wrong: https://packages.debian.org/stretch/php

So confirm output above..

There is no output on apt-cache search phalcon.

apt show php7.0-phalcon Output is

N: Unable to locate package php7.0-phalcon
N: Couldn't find any package by glob 'php7.0-phalcon'
N: Couldn't find any package by regex 'php7.0-phalcon'
N: Unable to locate package php7.0-phalcon
N: Couldn't find any package by glob 'php7.0-phalcon'
N: Couldn't find any package by regex 'php7.0-phalcon'
E: No packages found

That's odd, it looks like you're not fetching info from the remote repo at all.

So package maintainer shall be pinged on this @sergeyklay