04-05-2008
# cat capitals.txt
The quick Brown fox
jumped Over the Lazy Dog
# for i in `cat capitals.txt`
>do
>echo $i | grep [A-Z]
>done
The
Brown
Over
Lazy
Dog
HTH
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LEARN ABOUT PHP
hash_file
HASH_FILE(3) 1 HASH_FILE(3)
hash_file - Generate a hash value using the contents of a given file
SYNOPSIS
string hash_file (string $algo, string $filename, [bool $raw_output = false])
DESCRIPTION
PARAMETERS
o $algo
- Name of selected hashing algorithm (i.e. "md5", "sha256", "haval160,4", etc..)
o $filename
- URL describing location of file to be hashed; Supports fopen wrappers.
o $raw_output
- When set to TRUE, outputs raw binary data. FALSE outputs lowercase hexits.
RETURN VALUES
Returns a string containing the calculated message digest as lowercase hexits unless $raw_output is set to true in which case the raw
binary representation of the message digest is returned.
EXAMPLES
Example #1
Using hash_file(3)
<?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
SEE ALSO
hash(3), hash_hmac_file(3), hash_update_file(3), md5_file(3), sha1_file(3).
PHP Documentation Group HASH_FILE(3)