October 2005
Intermediate to advanced
372 pages
11h 35m
English
PHP's sha1_file() function creates a checksum hash value using the SHA1 algorithm. To use it, pass the filename and capture the return value, like this:
$sha1 = sha1_file($filename);
For MD5 hashing, you can use the function md5_file(). It works in exactly the same way as sha1_file(), except that it returns the MD5 hash as opposed to the SHA1 hash.