Loader

sha1_file

Calculates the sha1 hash of the file specified by filename using the » US Secure Hash Algorithm 1, and returns that hash. The hash is a 40-character hexadecimal number. Test sha1_file online.

string sha1_file ( string $filename [, bool $raw_output = false ] )

Maximum file size: 1000KB

PHP Documentation by the PHP Documentation Group

sha1_file

(PHP 4 >= 4.3.0, PHP 5, PHP 7)

sha1_fileCalculate the sha1 hash of a file

Description

sha1_file ( string $filename [, bool $raw_output = FALSE ] ) : string

Calculates the sha1 hash of the file specified by filename using the » US Secure Hash Algorithm 1, and returns that hash. The hash is a 40-character hexadecimal number.

Parameters

filename

The filename of the file to hash.

raw_output

When TRUE, returns the digest in raw binary format with a length of 20.

Return Values

Returns a string on success, FALSE otherwise.

Examples

Example #1 sha1_file() example

<?php
foreach(glob('/home/Kalle/myproject/*.php') as $ent)
{
    if(
is_dir($ent))
    {
        continue;
    }

    echo 
$ent ' (SHA1: ' sha1_file($ent) . ')'PHP_EOL;
}
?>

Changelog

Version Description
5.1.0 Changed the function to use the streams API. It means that you can use it with wrappers, like sha1_file('http://example.com/..')

See Also

  • sha1() - Calculate the sha1 hash of a string
  • md5_file() - Calculates the md5 hash of a given file
  • crc32() - Calculates the crc32 polynomial of a string

PHP Documentation

Copyright © 1997 - 2016 by the PHP Documentation Group. This material may be distributed only subject to the terms and conditions set forth in the Creative Commons Attribution 3.0 License or later. A copy of the Creative Commons Attribution 3.0 license is distributed with this manual. The latest version is presently available at » http://creativecommons.org/licenses/by/3.0/.