crypt () function is used to create one way encryption. It takes one input string and one optional parameter. The function is defined as: crypt (input_string, salt), where input_string consists of the string that has to be encrypted and salt is an optional parameter. PHP uses DES for encryption. The format is as follows:
<?php
$password= crypt("tutorialswebsite");
echo $password." is the encrypted version of tutorialswebsite";
?>
