(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 = []
algoName of selected hashing algorithm (i.e. "md5", "sha256", "haval160,4", etc..). For a list of supported algorithms see hash_algos().
filenameURL describing location of file to be hashed; Supports fopen wrappers.
binary
When set to true, outputs raw binary data.
false outputs lowercase hexits.
optionsAn 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