(no version information, might be only in CVS)
hash_file -- Generate a hash value using the contents of a given file
Name of selected hashing algorithm (i.e. "md5", "sha256", "haval160,4", etc..)
URL describing location of file to be hashed; Supports fopen wrappers.
When set to TRUE, outputs raw binary data. Default value (FALSE) outputs lowercase hexits.
Returns a string containing the calculated message digest as lowercase hexits unless raw_output is set to true in which case the raw binary representation of the message digest is returned.