sha1_file

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

Calculate the sha1 hash of a file

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.

Returns:

Returns a string on success, FALSE otherwise.

Changelog:

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/..')

Examples:

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;
}
?>