Update links to PHP driver and library in drivers table

The ecosystem page explains the relation between the driver and library. Based on their design, documentation for both are relevant to users. They are also installed independently, perhaps unlike other languages that also have separate high- and low-level packages (e.g. mongodb-core for Node.js).

Author: jmikola

source/includes/driver-table.rst

@@ -38,9 +38,12 @@
      - `Current Perl Driver API <https://metacpan.org/pod/MongoDB>`_
 
    * - :ecosystem:`PHP </drivers/php?jmp=docs>`
-     - `PHP Driver Releases <http://pecl.php.net/package/mongo?jmp=docs>`_
-     - `PHP Driver Source Code <https://github.com/mongodb/mongo-php-driver?jmp=docs>`_
-     - `Current PHP Driver API <http://php.net/mongo?jmp=docs>`_
+     - `PHP Driver Releases <https://pecl.php.net/package/mongodb?jmp=docs>`_,
+       `PHP Library Releases <https://packagist.org/packages/mongodb/mongodb?jmp=docs>`_
+     - `PHP Driver Source Code <https://github.com/mongodb/mongo-php-driver?jmp=docs>`_,
+       `PHP Library Source Code <https://github.com/mongodb/mongo-php-library?jmp=docs>`_
+     - `Current PHP Driver API <https://php.net/manual/en/set.mongodb.php?jmp=docs>`_,
+       `Current PHP Library API <https://docs.mongodb.com/php-library/current/?jmp=docs>`_
 
    * - :ecosystem:`Python </drivers/python?jmp=docs>`
      - `Python Driver Releases <https://pypi.python.org/pypi/pymongo/?jmp=docs>`_