- hash: documentation ( source)
<?php
echo hash('sha256','qwertyuiopasdfghjklzxcvbnm12345'); //31 symbol
echo "\n";
echo hash('sha256','qwertyuiopasdfghjklzxcvbnm12345asdfghjklzxcvbnmcvcvxcvcvxcvxcvcvv'); //65 symbol
echo "\n";
echo hash('sha256','qwertyuiopasdfghjklzxcvbnm12345asdfghjklzxcvbnmcvcvxcvcvxcvxcvc23'); //65 symbol, changed last 2