Reduce travis load

.travis.yml

@@ -264,24 +264,27 @@ script:
   echo
 
 - |
-  echo "Checking PHP syntax errors"
+  echo "Checking PHP syntax errors (only 1 version to not overload travis and avoid duplicate tests)"
   # Ensure we catch errors
   set -e
   #parallel-lint --exclude htdocs/includes --blame .
-  parallel-lint --exclude dev/tools/test/namespacemig --exclude htdocs/includes/composer --exclude htdocs/includes/myclabs --exclude htdocs/includes/phpspec --exclude dev/initdata/dbf/includes \
-  	--exclude htdocs/includes/sabre --exclude htdocs/includes/phpoffice/PhpSpreadsheet --exclude htdocs/includes/sebastian \
-  	--exclude htdocs/includes/squizlabs/php_codesniffer --exclude htdocs/includes/jakub-onderka --exclude htdocs/includes/php-parallel-lint --exclude htdocs/includes/symfony \
-  	--exclude htdocs/includes/mike42/escpos-php/example --exclude htdocs/includes/maximebf \
-  	--exclude htdocs/includes/phpunit/ --exclude htdocs/includes/tecnickcom/tcpdf/include/barcodes --exclude htdocs/includes/webmozart --blame .
+  # Exclusions are defined in the ruleset.xml file
+  if [ "$TRAVIS_PHP_VERSION" = "7.4" ]; then
+	  parallel-lint --exclude dev/tools/test/namespacemig --exclude htdocs/includes/composer --exclude htdocs/includes/myclabs --exclude htdocs/includes/phpspec --exclude dev/initdata/dbf/includes \
+	  	--exclude htdocs/includes/sabre --exclude htdocs/includes/phpoffice/PhpSpreadsheet --exclude htdocs/includes/sebastian \
+	  	--exclude htdocs/includes/squizlabs/php_codesniffer --exclude htdocs/includes/jakub-onderka --exclude htdocs/includes/php-parallel-lint --exclude htdocs/includes/symfony \
+	  	--exclude htdocs/includes/mike42/escpos-php/example --exclude htdocs/includes/maximebf \
+	  	--exclude htdocs/includes/phpunit/ --exclude htdocs/includes/tecnickcom/tcpdf/include/barcodes --exclude htdocs/includes/webmozart --blame .
+  fi
   set +e
   echo
 
 - |
-  echo "Checking coding style (excluding Pull Requests builds to not overload travis, excluding also some jobs to avoid duplicate tests)"
+  echo "Checking coding style (only for Pull Requests builds and 1 version to not overload travis and avoid duplicate tests)"
   # Ensure we catch errors
   set -e
   # Exclusions are defined in the ruleset.xml file
-  if [ "$TRAVIS_PULL_REQUEST" = "false" ] && [ "$TRAVIS_PHP_VERSION" = "7.4" ] && [ "$DB" = "mysql" ]; then
+  if [ "$TRAVIS_PULL_REQUEST" = "false" ] && [ "$TRAVIS_PHP_VERSION" = "7.4" ]; then
     phpcs -s -p -d memory_limit=-1 --extensions=php --colors --tab-width=4 --standard=dev/setup/codesniffer/ruleset.xml --encoding=utf-8 --runtime-set ignore_warnings_on_exit true .;
   fi
   set +e