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PHP_CodeSniffer vs PHP CS Fixer

The same facts for both, read from GitHub every night, and the relation a person reviewed.

PHP_CodeSniffer vs PHP CS Fixer
Fact	PHP_CodeSniffer	PHP CS Fixer
Language	PHP	PHP
Licence	BSD-3-Clause	MIT
Stars	1.6k	14k
Latest	4.0.4	v3.95.27
Last push	2026-10-08	2026-10-09
Release cadence	about 3 days between releases	about 6 days between releases
Active contributors	6 commit authors on the default branch in the last 90 days	15 commit authors on the default branch in the last 90 days
Flags	none	none

How they relate

PHP_CodeSniffer replaces PHP CS Fixer. Alternatives to PHP CS Fixer →
PartialChecks code against coding standards and fixes many violations, with a rule-based sniff approach.
PHP CS Fixer replaces PHP_CodeSniffer. Alternatives to PHP_CodeSniffer →
PartialFixes coding style automatically, but does not report violations without changing files.