phpep: A Tiny PHP Expression Parser - Ported from jsep

phpep is a simple expression parser written in PHP, ported from JavaScript. It can parse expressions but not operations. The difference between expressions and operations is akin to the difference between a cell in an Excel spreadsheet vs. a proper JavaScript program.

Why phpep?

I wanted a lightweight, tiny parser to be included in one of my other libraries. jsep provided this functionality. I also wanted to be able to parse these expressions in my PHP projects, which led me to porting jsep.

Usage

PHP

require('phpep.php');
$expr = new PHPEP("1 + 1");
$stack = $expr->exec();
var_dump($stack);

Custom Operators

// Not yet implemented.

Install dependencies

Dependencies are managed using composer. To install the dependencies, run the following command: php composer.phar install

PHPUnit Tests

This library is using php unit testing framework. In order to test the library, run the following command: /vendor/bin/phpunit

License

phpep is under the MIT license. See LICENSE file.

Thanks

Thanks to Stephen Oney for the original jsep project Some parts of the latest version of jsep were adapted from the esprima parser.