If you need to modify the configuration file of your PHP instance, to a certain extent it is possible to do so.
Some parameters can't be changed. The list of these unmodifiable parameters is below.
Access your instance with SFTP and download the file /lamp0/etc/php/php-custom.ini Locally edit the file. putting in the values you want to change. Values that remain unmodified will remain at the defaults.( See default phpinfo). When you are satisfied with your version of the file, upload it to your instance, replacing the original (lamp0/etc/php/php-custom.ini).
To make your changes effective, you need to reboot your instance.
Here is the list of unmodifiable parameters and their default values. Entries in php-custom.ini for one of these settings in your will be ignored:
log_errors = On ignore_repeated_errors = On ignore_repeated_source = On always_populate_raw_post_data = On memory_limit = 128 # memory_limit = 256 for a XXL size Simple Hosting realpath_cache_size = "1M" memory_limit = 128M max_execution_time = 120 upload_tmp_dir = "/srv/data/tmp" upload_max_filesize = 128M post_max_size = 128M include_path = ".:/usr/share/php:/srv/data/web/includes" variables_order = GPCS output_buffering = 8192 [apc] apc.gc_ttl = 1200 apc.ttl = 0 apc.user_ttl = 0 apc.slam_defense = 0 apc.write_lock = 1 apc.file_update_protection = 0 apc.stat = 1 apc.stat_ctime = 1 apc.max_file_size = 10M [mysql] mysql.default_socket="/var/run/mysqld/mysqld.sock" mysql.default_user="root" mysql.default_pw="" [mysqli] mysqli.default_socket="/var/run/mysqld/mysqld.sock" mysqli.default_user="root" mysqli.default_pw="" [pdo_mysql] pdo_mysql.default_socket="/var/run/mysqld/mysqld.sock"