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PHP Copy/Paste Detector (PHPCPD)

phpcpd is a Copy/Paste Detector (CPD) for PHP code.

It was originally written and maintained by Sebastian Bergmann, but he does not want to maintain it anymore (which is totally ok, I guess he has his hands full with many other great contributions for the php-community, like phpunit). So I started to work on it.

Installation

This tool is distributed as a PHP Archive (PHAR):

$ wget https://phar.phpunit.de/phpcpd.phar  
$ php phpcpd.phar --version```  
  
Using [Phive](https://phar.io/) is the recommended way for managing the tool dependencies of your project:  
  
```bash  
$ phive install phpcpd  
$ ./tools/phpcpd --version```  
  
**[It is not recommended to use Composer to download and install this tool.](https://twitter.com/s_bergmann/status/999635212723212288)**  
  
## Usage Example

$ php phpcpd.phar --fuzzy wordpress-5.5
phpcpd 6.0.0 by Sebastian Bergmann.

Found 121 clones with 8137 duplicated lines in 69 files:

  • /home/sb/wordpress-5.5/wp-includes/sodium_compat/src/Core/Curve25519/H.php:19-1466 (1447 lines)
    /home/sb/wordpress-5.5/wp-includes/sodium_compat/src/Core32/Curve25519/H.php:19-1466
    .
    .
    .
  • /home/sb/wordpress-5.5/wp-includes/sodium_compat/src/Core32/Curve25519.php:879-889 (10 lines)
    /home/sb/wordpress-5.5/wp-includes/sodium_compat/src/Core32/Curve25519.php:1072-1082

1.82% duplicated lines out of 446676 total lines of code.
Average size of duplication is 67 lines, largest clone has 1447 of lines

Time: 00:02.980, Memory: 318.00 MB