[work in progress] Compile and install php 7.X on Debian

Error

update-alternatives: error: alternative /usr/local/php-7.1.26/bin/php for php not registered; not setting

echo "Will set php version to $PHP_VERSION"
sudo update-alternatives --set php /usr/local/php-$PHP_VERSION/bin/php
update-alternatives: error: alternative /usr/local/php-7.1.26/bin/php for php not registered; not setting

Solution

sudo update-alternatives --install /usr/bin/php php /usr/local/php-$PHP_VERSION/bin/php 1
sudo update-alternatives --set php /usr/local/php-$PHP_VERSION/bin/php
php --version

Error

$ phpize

Cannot find config.m4.
Make sure that you run '/usr/local/php-7.1.26/bin/phpize' in the top level source directory of the module

Solution

https://stackoverflow.com/questions/17834363/phpize-cannot-find-config-m4

Problem

PHP Warning: PHP Startup: Unable to load dynamic library '/usr/local/php-7.1.26/lib/php/extensions/no-debug-non-zts-20160303/php_curl.dll'

You can also install pre-built
https://www.cyberciti.biz/faq/installing-php-7-on-debian-linux-8-jessie-wheezy-using-apt-get/