W3cubDocs

/PHP

sha1_file

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

sha1_file — Calculate the sha1 hash of a file

Description

sha1_file ( string $filename [, bool $binary = false ] ) : string|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.

binary

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;
}
?>

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

© 1997–2020 The PHP Documentation Group
Licensed under the Creative Commons Attribution License v3.0 or later.
https://www.php.net/manual/en/function.sha1-file.php