(PHP 5 >= 5.1.2, PHP 7, PECL hash >= 1.1)
hash_file — Generate a hash value using the contents of a given file
hash_file ( string $algo , string $filename [, bool $binary = false ] ) : string|false
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.
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.
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
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https://www.php.net/manual/en/function.hash-file.php