Install PHP_CodeSniffer:
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pear install PHP_CodeSniffer


Check the code with:
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phpcs --standard=/path/to/the/PhOSCo/folder /path/to/the/src/folder >/tmp/code-errors.txt
vi /tmp/code-errors.txt


Or integrate it as external tool into Eclipse:
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* Open External tool configuration window
* set the name to "CodeSniffer"
* set /usr/bin/phpcs as Location
* set --standard="${project_loc}/libs/codesniffer/PhOSCo" "${selected_resource_loc}" as Arguments
* on the Build tab set the parameters as needed
* click "Apply" and "Close"

* select one of the folders or *.php files
* execute the external tool "CodeSniffer"
* review the errors within the console output within Eclipse

correct all listed errors (...I hate it)!
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