Change the case of an array.

Is this file the same as that file? The files may or may not be binary. We could compare the modify dates, or the sizes. But, those are not very accurate to know if a file has really changed.

Introducing MD5 Checksum. We can feed the files into Digest::MD5 in binary mode.

This is a great way to do Incremental Backups.

This is also an easy way to verify checksums when downloading files from the internet which list their MD5 Checksums.

You'll need the Digest::MD5 Perl Module.

This function calculates how many lines will text occupy.
Example (simple):


$string = "Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Phasellus tincidunt posuere dolor";

$num_lines = how_many_lines(10, $string);

It accepts a third, optional, parameter $options, that allows you to change behaviour. $options should be array. Following configuration options are available:

'white_spaces' - default: array(' ', "\t") - array of chars, that should be treated as whitespace.

'new_lines' - default: array("\r\n", "\n") - array of strings, that should be treated as newlines. For example, for HTML you can set 'new_lines' => array('');

'force_line_breaks' - default: true - force wrapping, when the token is longer than width, or not. If set to false, and token cannot be fitted into $width, function will return false;

'callback' - default: null - callback function for determining character width. Must accept at least one parameter - $char

'callback_params' - default: array() - optional additional callback parameters

'char_widths' - default: null - associative array in a form $char => $width, which contains char width. If $char is not found in the array, it's width is defaulted to 0.

This code, working with MovableType, creates a tag cloud of tags entered into the keyword field of a blog entry. You can see the results and read my write-up which explains some other things that help with MovableType and tag clouds. I got this code from Al-Muhajabah and made a few minor tweaks. Put the PHP snippet below inside a MT template that creates a php page.

This multiple-use PHP script will randomly generate content based on a randomly generated number.

This is a simple PHP script that will show whether a certain port/socket of a certain computer is currently open/active.

Usage: cscript //nologo RandPass.vbs [password_length]|[?] [complexity] [uniqueness]

This script will generate a random password of X length. It will build the password from seed 'strings of increasing complexity.
1 - simple is the lower case alphabet, numbers 2-9 and !@#$%^&*() all randomly interspersed.
2 - complex is the same as the previous with the addition of UPPER case letters.
3 - insane is the same as the previous with the additional symbols of ,./?>;'[]}{\|~`:
The numbers 0 and 1 have been removed to avoid confusion with the letters O and L.

password_length should be a number between 4 and 127, although a limit of 14 is recommended for Win9x clients. Default is 7
complexity must be 1,2 or 3
uniqueness value of 0 will make each password character unique. A value of 1 [default] will allow repeated characters.

If you don't pass values at the command prompt, you will be prompted for each value.

Create a random password:


usage: CreatePasswd( 8,True,False)

Convert a password returned by JPasswordField::getPassword() into a String.

Ping, PingOMatic service for an updated. Requires: The Inutio XML-RPC Library.