The PHP Function Parser library by Jeremy Lindblom.
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.
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'));
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:
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.
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] travis-ci
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