[doc] php_excel stubs and install docs (howto)

Not an issue but sharing tips for php_excel installation and stubs to enable autocompletion.

The repo is https://github.com/belgattitude/php_excel_dev

Hope it helps newcomers, I intend to maintain this repo for a while. php_excel is an amazing solution. Thanks @iliaal and others

Doc:

Stubs

Useful for autocompletion: composer require soluble/php_excel_dev --dev

php_excel install tips

In order to compile the ilia/php_excel you must have libXL installed and the php development packages installed (phpize, phpconfig).

On Ubuntu:

sudo apt-get install php-dev

Alternatively suffix with the php version if you're using the ondrej/php ppa:
sudo apt-get install php7.3-dev

Once done, you can either use one of the bash scripts below :

PHP	Distribution	Gist
7.3	Ubuntu ondrej/php ppa	install_phpexcel_php73.sh
7.2	Ubuntu ondrej/php ppa	install_phpexcel_php72.sh
7.1	Ubuntu ondrej/php ppa	install_phpexcel_php71.sh

Or make a manual installation :

LibXL

The libxl static binaries can easily be installed:

sudo mkdir /opt/libxl-3.8.2;
wget -qO- http://www.libxl.com/download/libxl-lin-3.8.2.tar.gz | sudo tar zxvf - --strip 1 --directory /opt/libxl-3.8.2

PHP extension

Download and unzip the php7 branch:

wget -qO- https://github.com/iliaal/php_excel/archive/php7.tar.gz | tar zxvf - --directory /tmp

Build the extension;

cd /tmp/php_excel-php7; 
./configure --with-php-config=`which php-config` \
            --with-libxl-incdir=/opt/libxl-3.8.2/include_c/ \
            --with-libxl-libdir=/opt/libxl-3.8.2/lib64/ \
            --with-excel=/opt/libxl-3.8.2 && \
make && \
make install

In case you're using multiple php versions, you can generally suffix the phpize and phpconfig commands like phpize-7.3, php-config-7.3...

Then register the extension in your php.ini:

extension=excel.so

For ondrej/php ppa

echo "extension=excel.so" > /tmp/excel.ini;
sudo cp /tmp/excel.ini /etc/php/php7.3/mods-available/excel.ini; 
sudo phpenmod -v 7.3 excel;

iliaal / php_excel