PHPMD is a spin-off project of PHP Depend and aims to be a PHP equivalent of the well known Java tool PMD. PHPMD can be seen as an user friendly frontend application for the raw metrics stream measured by PHP Depend.
Command line usage
phpmd [filename|directory] [report format] [ruleset file], i.e:
mapi@arwen ~ $ phpmd php/PDepend/DbusUI/ xml rulesets.xml
rulesets.xml ruleset file could look like this:
<?xml version="1.0"?> <ruleset name="My first PHPMD rule set" xmlns="http://pmd.sf.net/ruleset/1.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://pmd.sf.net/ruleset/1.0.0 http://pmd.sf.net/ruleset_xml_schema.xsd" xsi:noNamespaceSchemaLocation=" http://pmd.sf.net/ruleset_xml_schema.xsd"> <description> My custom rule set that checks my code... </description> <rule ref="rulesets/codesize.xml" /> <rule ref="rulesets/cleancode.xml" /> <rule ref="rulesets/controversial.xml" /> <rule ref="rulesets/design.xml" /> <rule ref="rulesets/naming.xml" /> <rule ref="rulesets/unusedcode.xml" /> </ruleset>
The xml report would like like this:
<?xml version="1.0" encoding="UTF-8" ?> <pmd version="0.0.1" timestamp="2009-12-19T22:17:18+01:00"> <file name="/projects/pdepend/PHP/Depend/DbusUI/ResultPrinter.php"> <violation beginline="81" endline="81" rule="UnusedFormalParameter" ruleset="Unused Code Rules" externalInfoUrl="https://phpmd.org/rules/unusedcode.html#unusedformalparameter" priority="3"> Avoid unused parameters such as '$builder'. </violation> </file> </pmd>
You can pass a file name or a directory name containing PHP source code to PHPMD.
The PHPMD Phar distribution includes the rule set files inside its archive, even if the "rulesets/codesize.xml" parameter above looks like a filesystem reference.
Command line options
Notice that the default output is in XML, so you can redirect it to a file and XSLT it or whatever
You can also use shortened names to refer to the built-in rule sets, like this:
phpmd PHP/Depend/DbusUI/ xml codesize
The command line interface also accepts the following optional arguments:
--minimumpriority- The rule priority threshold; rules with lower priority than they will not be used.
--reportfile- Sends the report output to the specified file, instead of the default output target
--suffixes- Comma-separated string of valid source code filename extensions, e.g. php,phtml.
--exclude- Comma-separated string of patterns that are used to ignore directories. Use asterisks to exclude by pattern. For example
--strict- Also report those nodes with a @SuppressWarnings annotation.
--ignore-errors-on-exit- will exit with a zero code, even on error.
--ignore-violations-on-exit- will exit with a zero code, even if any violations are found.
--generate-baseline- will generate a
phpmd.baseline.xmlfor existing violations next to the ruleset definition file. The file paths of the violations will be relative to the current working directory.
--update-baseline- will remove all violations from an existing
phpmd.baseline.xmlthat no longer exist. New violations will _not_ be added. The file path of the violations will be relative to the current working directory.
--baseline-file- the filepath to a custom baseline xml file.
An example command line:
phpmd PHP/Depend/DbusUI xml codesize --reportfile phpmd.xml --suffixes php,phtml
Using multiple rule sets
PHPMD uses so called rule sets that configure/define a set of rules which will be applied against the source under test. The default distribution of PHPMD is already shipped with a few default sets, that can be used out-of-box. You can call PHPMD's cli tool with a set's name to apply this configuration:
~ $ phpmd /path/to/source text codesize
But what if you would like to apply more than one rule set against your source? You can also pass a list of rule set names, separated by comma to PHPMD's cli tool:
~ $ phpmd /path/to/source text codesize,unusedcode,naming
You can also mix custom rule set files with build-in rule sets:
~ $ phpmd /path/to/source text codesize,/my/rules.xml
That's it. With this behavior you can specify you own combination of rule sets that will check the source code.
Using multiple source files and folders
PHPMD also allowes you to specify multiple source directories in case you want to create one output for certain parts of your code
~ $ phpmd /path/to/code,index.php,/another/place/with/code text codesize
PHPMD's command line tool currently defines four different exit codes.
- 0, This exit code indicates that everything worked as expected. This means there was no error/exception and PHPMD hasn't detected any rule violation in the code under test.
- 1, This exit code indicates that an exception occurred which has interrupted PHPMD during execution.
- 2, This exit code means that PHPMD has processed the code under test
without the occurrence of an error/exception, but it has detected rule
violations in the analyzed source code. You can also prevent this behaviour
--ignore-violations-on-exitflag, which will result to a 0 even if any violations are found.
- 3, This exit code means that one or multiple files under test could not
- be processed because of an error. There may also be violations in other files that could be processed correctly.
At the moment PHPMD comes with the following renderers:
- xml, which formats the report as XML.
- text, simple textual format.
- html, single HTML file with possible problems.
- json, formats JSON report.
- ansi, a command line friendly format.
- github, a format that GitHub Actions understands.
- gitlab, a format that GitLab CI understands.
- sarif, the Static Analysis Results Interchange Format.
- checkstyle, language and tool agnostic XML format
For existing projects a violation baseline can be generated. All violations in this baseline will be ignored in further inspections.
The recommended approach would be a
phpmd.xml in the root of the project. To generate the
phpmd.baseline.xml next to it:
~ $ phpmd /path/to/source text phpmd.xml --generate-baseline
To specify a custom baseline filepath for export:
~ $ phpmd /path/to/source text phpmd.xml --generate-baseline --baseline-file /path/to/source/phpmd.baseline.xml
By default PHPMD will look next to
phpmd.baseline.xml. To overwrite this behaviour:
~ $ phpmd /path/to/source text phpmd.xml --baseline-file /path/to/source/phpmd.baseline.xml
To clean up an existing baseline file and only remove no longer existing violations:
~ $ phpmd /path/to/source text phpmd.xml --update-baseline
PHPMD for enterprise
Available as part of the Tidelift Subscription.
The maintainers of
PHPMD and thousands of other packages are working with Tidelift to deliver commercial support and maintenance for the open source dependencies you use to build your applications. Save time, reduce risk, and improve code health, while paying the maintainers of the exact dependencies you use. Learn more.
If you want to contribute to PHPMD, please consult the contribution guide.