sha1 in PHP

PHP sha1 function is used to calculate the sha1 hash of a string.

Syntax:

sha1(string,raw)
string : Required. The input string to be calculated

raw : Optional. Defines hex or binary output format : 
             TRUE –returns in  Raw binary format with length 20 character.
             FALSE – Default. 40 character hex number

Example:

<?php
$str_name = "Good Morning";
echo sha1($str_name)."<br />";
echo sha1($str_name, TRUE)."<br />";
?>
Output will be:
06e336231466d0b0573a05cbca7813444afb5b29 
ã6#fаW:ËÊxDJû[)