超越PHP - Exceed PHP: sha1_file

sha1_file

(PHP 4 >= 4.3.0, PHP 5)

sha1_file -- Calculate the sha1 hash of a file

Description

string sha1_file ( string filename [, bool raw_output])

Calculates the sha1 hash of filename using the US Secure Hash Algorithm 1, and returns that hash. The hash is a 40-character hexadecimal number. Upon failure, FALSE is returned. If the optional raw_output is set to TRUE, then the sha1 digest is instead returned in raw binary format with a length of 20.

注: The optional raw_output parameter was added in PHP 5.0.0 and defaults to FALSE

See also sha1(), crc32(), and md5_file()

add a note User Contributed Notes
sha1_file

Vincent
09-Jun-2004 07:48

Here is a handy way to get sha1 of a file's
contents.

<?php

function sha1_of_file($file) {
if
(!file_exists($file))
return false;

$contents =
join("",file($file));

return
sha1($contents);
}

?>

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setlocale

sha1

Last updated: Fri, 22 Jun 2007