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Parses PHP functions/methods/closures to get the code
PHP
branch: master

README.md

FunctionParser

The PHP Function Parser library by Jeremy Lindblom.

Build Status

Purpose

The PHP FunctionParser provides the ability to parse and retrieve the code defining an existing function as a string. This can be used in clever ways to generate documentation or example code or even to serialize a closure.

The class also allows you to get information about the function like the parameter names and the names and values of variables in the use statement of a closure.

General Use

The FunctionParser relies on the Reflection API and also on the PHP tokenizer (token_get_all()), so PHP must be compiled with the --enable-tokenizer flag in order for the tokenizer to be available.

Here is a small example of how it works:

use FunctionParser\FunctionParser;

$foo = 2;
$closure = function($bar) use($foo) {
    return $foo + $bar;
};

$parser = new FunctionParser(new \ReflectionFunction($closure));
$code   = $parser->getCode();

You can also use the fromCallable factory method as a convenient way to generate the reflected function automatically from any PHP callable:

$parser = FunctionParser::fromCallable(function($foo) {echo $foo . 'bar';});
$parser = FunctionParser::fromCallable('Foo::bar');
$parser = FunctionParser::fromCallable(array('Foo', 'bar'));

Installation

The FunctionParser relies on the Reflection API and also on the PHP tokenizer (token_get_all()), so PHP must be compiled with the --enable-tokenizer flag in order for the tokenizer to be available.

Requirements:

  • PHP 5.3.2+
  • PHPUnit for tests
  • Composer for consuming FunctionParser as a dependency

To install FunctionParser as a dependency of your project using Composer, please add the following to your composer.json config file.

{
    "require": {
        "jeremeamia/FunctionParser": "*"
    }
}

Then run php composer.phar install --install-suggests from your project's root directory to install the FunctionParser.

Building

There is a buid.xml file that you can use to generate test coverage reports, documenation, and code analytics. The current file is designed to be used with ant, but I will be migrating this to phing sometime soon. More on this later.

The test suite and code coveage report are currently setup to run in Travis CI. See FunctionParser on Travis CI

Links

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