As more secure web services avoid storing passwords in plain text format, languages such as PHP provide various (undecryptable) hash functions to support the more secure industry standard. This topic provides documentation for proper hashing with PHP.
After MySQL 5.7, when we install MySQL sometimes we don't need to create a root account or give a root password. By default when we start the server, the default password is stored in the
mysqld.log file. We need to login in to the system using that password and we need to change it.