create a script which creates a file with 50 current proxies

Create a script that creates a list with a maximum of 50 current proxies and summarizes them in one file. The proxies are anonymous or elite level, have a reaction time under 2 seconds and not from Germany. If new file create the old file should be saved in a backup subfolder. The script should be started by cronjob once a day. We create the cronjob. The file (CLRF, UTF-8) should contain the following format [ {"host":"[login to view URL]"}, {"host":"[login to view URL]"}, {"host":"[login to view URL]"} ]