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Showing content from https://qafoolabs.github.io/php-refactoring-browser below:

PHP Refactoring Browser by QafooLabs

Note: This software is under development and in alpha state. Refactorings
do not contain all necessary pre-conditions and might mess up your code.
Check the diffs carefully before applying the patches.

Automatic Refactorings for PHP Code by generating diffs that describe the refactorings steps. To prevent simple mistakes during refactorings, an automated tool is a great.

The library is standing on the shoulder of giants, using multiple existing libraries:

• PHP Parser by Nikic
• PHP Token Reflection from Ondřej Nešpor

Based on data from these sources the Refactoring Browser consists of two distinct components:

• Patches allows to build patches based on change operations on a file.
• Refactoring contains the actual Refactoring domain and adapters to third party libraries.
• Collections adds some collection semantics on top of PHP arrays. Currently contains a Set type.

Download PHAR

The refactoring browser is used with:

php refactor.phar <refactoring> <arg1>...<argN>

It outputs a diff to the screen and you can apply it to your code by piping it to patch -p1:

php refactor.phar <refactoring> <arg1>...<argN> | patch -p1

Users of PHPStorm (or Netbeans) might wonder why this project exists, all the refactorings are available in this IDE. We feel there are several reasons to have such a tool in PHP natively:

• We are VIM users and don’t want to use an IDE for refactorings. Also we are independent of an IDE and users of any (non PHP Storm) editor can now benefit from the practice of automated refactorings.
• The non-existence of a simple refactoring tool leads to programmers not refactoring “just to be safe”. This hurts long time maintainability of code. Refactoring is one of the most important steps during development and just come easy.
• Generating patches for refactorings before applying them allows to easily verify the operation yourself or sending it to a colleague.
• The libraries (see above) to build such a tool are available, so why not do it.
• The project is an academic of sorts as well, as you can see in the Design Goals we try to be very strict about the Ports and Adapters architecture and a Domain Driven Design.

Extract a range of lines into a new method and call this method from the original location:

php refactor.phar extract-method <file> <line-range> <new-method>

This refactoring automatically detects all necessary inputs and outputs from the function and generates the argument list and return statement accordingly.

Rename a local variable from one to another name:

php refactor.phar rename-local-variable <file> <line> <old-name> <new-name>

Converts a local variable into an instance variable, creates the property and renames all the occurrences in the selected method to use the instance variable:

php refactor.phar convert-local-to-instance-variable <file> <line> <variable>

Batch Operation to rename classes and namespaces by syncing class-names (IS-state) to filesystem names (SHOULD-state) based on the assumption of PSR-0.

Fix class and namespace names to correspond to the current filesystem layout, given that the project uses PSR-0. This means you can use this tool to rename classes and namespaces by renaming folders and files and then applying the command to fix class and namespaces.

php refactor.phar fix-class-names <dir>

Optimizes the use of Fully qualified names in a file so that FQN is imported with “use” at the top of the file and the FQN is replaced with its classname.

All other use statements will be untouched, only new ones will be added.

php refactor.phar optimize-use <file>

Not prioritized.

Integration:

• Vim Plugin to apply refactorings from within Vim.

List of Refactorings to implement:

• Extract Method (Prototype Done)
• Rename Local Variable (Prototype Done)
• Optimize use statements (Done)
• Convert Local Variable to Instance Variable (Prototype Done)
• Rename Class PSR-0 aware (Done)
• Rename Namespace PSR-0 aware (Done)
• Convert Magic Value to Constant
• Rename Method * Private Methods Only first
• Rename Instance Variable * Private Variables Only First
• Extract Interface

• Be independent of third-party libraries and any Type Inference Engine (PDepend, PHP Analyzer) via Ports+Adapters
• Apply Domain-Driven-Design and find suitable Bounded Contexts and Ubiquitous Language within them
• Avoid primitive obsession by introducing value objects for useful constructs in the domain

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