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Programming PHP, 3rd Edition by Peter MacIntyre, Kevin Tatroe, Rasmus Lerdorf

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Name

sha1_file

Synopsis

string sha1_file(string path[, bool binary])

Calculates and returns the sha1 encryption hash for the file at path. A sha1 hash is a 40-character hexadecimal value that can be used to checksum a file’s data. If binary is supplied and is true, the result is sent as a 20-bit binary value instead.

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