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sha1_file

(PHP 4 >= 4.3.0, PHP 5)

sha1_fileCalculate the sha1 hash of a file

Description

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

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/..')
5.0.0 Added the raw_output parameter

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

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