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

sha1_fileCalculate the sha1 hash of a file


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.



The filename of the file to hash.


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

Return Values

Returns a string on success, FALSE otherwise.


Example #1 sha1_file() example

foreach(glob('/home/Kalle/myproject/*.php') as $ent)

$ent ' (SHA1: ' sha1_file($ent) . ')'PHP_EOL;


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('')

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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