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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.

filename: The filename
raw_output: When TRUE, returns the digest in raw binary format with a length of 20. Defaults to FALSE.

Returns a string on success, FALSE otherwise.

Version	Description
5.0.0	Added the `raw_output` parameter
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/..')`