Correct form of indefinite article (a, an) in PHP strings

Question

Is there an easy way to substitute a/an in a string to agree with the following word - much the same as the way 'S' works in Date format?

e.g.

$apple = 'apple';
$pear = 'pear';
echo "This is a $apple, this is a $pear."

--> This is an apple, this is a pear

Answer 1

Check this out, it passed my own testing, seems pretty solid.

https://github.com/Kaivosukeltaja/php-indefinite-article

Answer 2

I've forked the module Luke Chavers refers to, cleaning it up, fixing a logic error and making it integrable using Composer; with that installed, you can pull it into your project with:

php composer.phar require thaumatic/indefinite-article

The source code is at https://github.com/thaumatic/indefinite-article.