Write a script to collect email from certain sites

You need to write a script in PHP that will collect the e-mail database from certain sites. Email on these sites is encrypted using JS. All emails collected must be stored in the database and not added to the database when the database is re-assembled. Along with e-mail, if available, must be collected and phones and usernames (in most cases they are). If you update the database and notice that a particular e-mail had another owner (another phone, another name), then you need to update the data in the database, if not, just skip and go on. Multithreading is required, which is equal to the number of sites from which the e-mail will be collected.