hash_file
(PHP 5 >= 5.1.2, PECL hash >= 1.1)
hash_file — Generate a hash value using the contents of a given file
Description
string hash_file
( string
$algo
, string $filename
[, bool $raw_output = false
] )Parameters
-
algo -
Name of selected hashing algorithm (i.e. "md5", "sha256", "haval160,4", etc..)
-
filename -
URL describing location of file to be hashed; Supports fopen wrappers.
-
raw_output -
When set to
TRUE, outputs raw binary data.FALSEoutputs lowercase hexits.
Return Values
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.
Examples
Example #1 Using hash_file()
<?php
/* Create a file to calculate hash of */
file_put_contents('example.txt', 'The quick brown fox jumped over the lazy dog.');
echo hash_file('md5', 'example.txt');
?>
The above example will output:
5c6ffbdd40d9556b73a21e63c3e0e904
See Also
- hash() - Generate a hash value (message digest)
- hash_hmac_file() - Generate a keyed hash value using the HMAC method and the contents of a given file
- hash_update_file() - Pump data into an active hashing context from a file
- md5_file() - Calculates the md5 hash of a given file
- sha1_file() - Calculate the sha1 hash of a file
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