composer > squizlabs/php_codesniffer package > use ^3.4 (instead of ^2.9)

phing/properties.dist

@@ -47,6 +47,7 @@ dir.tests = ${project.basedir}/tests
 dir.build = ${project.basedir}/build
 dir.reports = ${dir.build}/reports
 dir.reports.coverage = ${dir.reports}/phpunit-coverage
+dir.reports.code_sniffer = ${dir.reports}/code_sniffer
 
 # Data directories
 #
@@ -72,6 +73,10 @@ check.php_coveralls.command = ./vendor/bin/php-coveralls --ansi -v
 #
 tests.cs_fixer.command = ./vendor/bin/php-cs-fixer fix --verbose
 
+# Path of the PHP_CodeSniffer (https://github.com/squizlabs/PHP_CodeSniffer)
+#
+tests.code_sniffer.command = ./vendor/bin/phpcs --report-full=${dir.reports.code_sniffer}/full.txt --report-summary=${dir.reports.code_sniffer}/summary.txt --report-checkstyle=${dir.reports.code_sniffer}/checkstyle.xml
+
 # Test database path
 #
 tests.database = ${dir.data.temporary}/database.sqlite

phing/tests.xml

@@ -55,14 +55,9 @@
                     test:infection"
     />
 
-    <!-- Symfony2 code sniffer -->
+    <!-- PHP_CodeSniffer -->
     <target name="check:cs" depends="build:prepare">
-        <phpcodesniffer standard="PSR2" showWarnings="true">
-            <fileset refid="sourcecode"/>
-            <formatter type="checkstyle" outfile="${dir.reports}/checkstyle.xml"/>
-            <formatter type="csv" outfile="${dir.reports}/checkstyle.csv"/>
-            <formatter type="summary" outfile="${dir.reports}/checkstyle-summary.txt"/>
-        </phpcodesniffer>
+        <exec command="${tests.code_sniffer.command}" passthru="true"/>
     </target>
 
     <!-- copy/paste detector -->
@@ -112,6 +107,7 @@
     <target name="build:prepare" depends="build:clean">
         <mkdir dir="${dir.reports}"/>
         <mkdir dir="${dir.reports.coverage}"/>
+        <mkdir dir="${dir.reports.code_sniffer}"/>
     </target>
 
     <!-- Checkout and finalization -->