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PHP sha1() Function

PHP sha1() function is used to calculate the SHA-1 hash of a given input string. This PHP function uses the US Secure Hash Algorithm 1. It produces a 160-bit output called message digest. SHA stands for “Secure Hash Algorithm”.

Syntax:

  sha1($string, $raw);

Parameter Values

Parameter	Description
string	This is a required parameter. This parameter contains the string to be calculated.
raw	This is an optional parameter. This parameter defines hex or binary output format: TRUE - 20 character binary format FALSE - 40 character hex number

Here is an example of sha1() function in PHP:

<html>
<body>

<?php
$str = "PHPTPOINT";
echo sha1($str);
?>

</body>
</html>

Output:
f7dc40fd310cca634141d5aa36db773308e8cda4

Here is an another example of sha1() function in PHP:

<html>
<body>

<?php 
$str = "PHPTPOINT"; 
echo "Original string: ".$str."<br><br>"; 
echo "TRUE - 20 character binary format: ".sha1($str, TRUE)."<br><br>"; 
echo "FALSE - 40 character hex number: ".sha1($str)."<br>"; 
?>

</body>
</html>

Output:
Original string: PHPTPOINT

TRUE - 20 character binary format: ��@�1 �cAAժ6�w3 �ͤ

FALSE - 40 character hex number: f7dc40fd310cca634141d5aa36db773308e8cda4

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