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(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.

Parameters

filename

The filename

raw_output

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

Return Values

Returns a string on success, FALSE otherwise.

ChangeLog

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/..')

Related Function(s)

sha1()

md5_file()

crc32()