PHP Copy/Paste Detector (PHPCPD)
phpcpd is a Copy/Paste Detector (CPD) for PHP code.
Installation
PHP Archive (PHAR)
The easiest way to obtain PHPCPD is to download a PHP Archive (PHAR) that has all required dependencies of PHPCPD bundled in a single file:
wget http://pear.phpunit.de/get/phpcpd.phar
chmod +x phpcpd.phar
mv phpcpd.phar /usr/local/bin/phpcpd
You can also immediately use the PHAR after you have downloaded it, of course:
wget http://pear.phpunit.de/get/phpcpd.phar
php phpcpd.phar
Composer
Simply add a dependency on sebastian/phpcpd to your project's composer.json file if you use Composer to manage the dependencies of your project. Here is a minimal example of a composer.json file that just defines a development-time dependency on PHPCPD:
{
"require-dev": {
"sebastian/phpcpd": "*"
}
}
For a standalone, system-wide installation via Composer, a composer.json similar to the one shown below can be used from an arbitary directory:
{
"require": {
"sebastian/phpcpd": "*"
},
"config": {
"bin-dir": "/usr/local/bin/"
}
}
PEAR Installer
The following two commands (which you may have to run as root) are all that is required to install PHPCPD using the PEAR Installer:
pear config-set auto_discover 1
pear install pear.phpunit.de/phpcpd
Usage Example
➜ ~ phpcpd /usr/local/src/phpunit/PHPUnit
phpcpd 1.4.1 by Sebastian Bergmann.
Found 3 exact clones with 53 duplicated lines in 5 files:
- /usr/local/src/phpunit/PHPUnit/Framework/Constraint/Or.php:136-157
/usr/local/src/phpunit/PHPUnit/Framework/Constraint/And.php:143-164
- /usr/local/src/phpunit/PHPUnit/Framework/Constraint/Or.php:136-157
/usr/local/src/phpunit/PHPUnit/Framework/Constraint/Xor.php:141-162
- /usr/local/src/phpunit/PHPUnit/Framework/Comparator/Scalar.php:121-132
/usr/local/src/phpunit/PHPUnit/Framework/Comparator/Numeric.php:102-113
0.19% duplicated lines out of 27640 total lines of code.
Time: 0 seconds, Memory: 18.25Mb
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