PuPHPet yaml config - PHP

php-config.yml

php:
    install: '1'
    settings:
        version: '70'
    modules:
        php:
            - cli
            - intl
            - mbstring
            - opcache
        pear: {  }
        pecl: {  }
    ini:
        display_errors: 'On'
        error_reporting: '-1'
        session.save_path: /var/lib/php/session
        date.timezone: UTC
        default_charset: UTF-8
        allow_url_fopen: 'On'
        memory_limit: 512M
    fpm_ini:
        error_log: /var/log/php-fpm.log
        php_admin_value[memory_limit] = 512M