Php can not be found on MSYS2

Question

I am using Msys2 on windows10

$ pacman -Sl | grep 'pacman '
msys pacman 5.2.1-6 [インストール済み]

Then,I tried to install php.

$pacman -S php

error: can't find target. : php

There is no package php.

$ pacman -Ss php
mingw32/mingw-w64-i686-doxygen 1.8.17-1
    A documentation system for C++, C, Java, IDL and PHP (mingw-w64)
mingw64/mingw-w64-x86_64-doxygen 1.8.17-1
    A documentation system for C++, C, Java, IDL and PHP (mingw-w64)
msys/doxygen 1.8.17-1
    A documentation system for C++, C, Java, IDL and PHP

I guess I should add some php repository???

How can I install the php??