How to using php7.0

[sanker2008]

I want to Install magento1 with php7.0
after modify .env to
...
NODE_VERSION=10
COMPOSER_VERSION=1
PHP_VERSION=7.0
PHP_XDEBUG_3=1
...

warden env up failed!

[bap14]

PHP 7.0 isn't built automatically by the Warden images process, so it's not available to use. You could download the build script(s) for warden images and build your own image, or find a third-party that has a pre-built PHP 7.0 or 5.5 image that has the extensions you need in it. Then just specify that image in the .warden/warden-env.yml file and Warden will use that image instead of the default image.

[navarr]

Go ahead and set PHP_XDEBUG_3=0 - this will pull the (very old built) PHP 7 images. These images do not support ARM64, and these versions of PHP are no longer supported.

If you want to run PHP 7.0 on ARM you will have to build custom images as @bap14 suggests.