(PHP 5 >= 5.1.2, PHP 7, PHP 8, PECL hash >= 1.1)
hash_file — Generate a hash value using the contents of a given file
$algo
,$filename
,$binary
= false
,$options
= []
algo
Name of selected hashing algorithm (i.e. "md5", "sha256", "haval160,4", etc..). For a list of supported algorithms see hash_algos().
filename
URL describing location of file to be hashed; Supports fopen wrappers.
binary
When set to true
, outputs raw binary data.
false
outputs lowercase hexits.
options
An array of options for the various hashing algorithms. Currently, only the "seed" parameter is supported by the MurmurHash variants.
Returns a string containing the calculated message digest as lowercase hexits
unless binary
is set to true in which case the raw
binary representation of the message digest is returned.
Version | Description |
---|---|
8.1.0 | The options parameter has been added. |
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