必要な時にのみxdebugをオン ref: https://qiita.com/koriym/items/29f81514706a39e3b7c1

file0.ini

;zend_extension = "/path/to/my/xdebug.so"

file0.txt

;zend_extension = "/path/to/my/xdebug.so"

file1.txt

{
    "scripts" :{
        "pcov": ["php -d pcov.enabled=1 ./vendor/bin/phpunit --coverage-text --coverage-html=build/coverage --coverage-clover=coverage.xml"],
        "coverage": ["php -dzend_extension=xdebug.so ./vendor/bin/phpunit --coverage-text --coverage-html=build/coverage --coverage-clover=coverage.xml"],
    }
}

file2.txt

composer pcov

file3.txt

composer coverage

file4.txt

after_script:
  - if [[ $TRAVIS_PHP_VERSION = '7.1' ]]; then wget https://scrutinizer-ci.com/ocular.phar && php ocular.phar code-coverage:upload --format=php-clover coverage.clover; fi

file4.yml

before_install:
  - phpenv config-rm xdebug.ini || true

file5.yml

jobs:
  include:
    - stage: Code Quality
      name: Code coverage
      php: 7.4
      install:
        - pecl install pcov
      script:
        - ./vendor/bin/phpunit -v --coverage-clover ./build/logs/clover.xml --coverage-text
      after_success:
        - bash <(curl -s https://codecov.io/bash) -cF php

xdebug.ini

;zend_extension = "/path/to/my/xdebug.so"