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PHP in a Nutshell
book

PHP in a Nutshell

by Paul Hudson
October 2005
Intermediate to advanced content levelIntermediate to advanced
372 pages
11h 35m
English
O'Reilly Media, Inc.
Content preview from PHP in a Nutshell

File Checksums

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.

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Publisher Resources

ISBN: 0596100671Errata Page