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Swapping two variables in PHP

Mihaela — Mon, 16 May 2011 12:34:50 +0000

In my last post at some point in the code I had to do a variable swap (to assign the value of the second variable to the first and vice-versa). To do this I used a third temporary variable to hold the content of the first variable so it’s value won’t be lost.

$temp . . . → Read More: Swapping two variables in PHP

PHP function to generate all permutations

Mihaela — Tue, 10 May 2011 12:09:15 +0000

To generate all permutations of a given set means to find all possible ways the elements of the set can be arranged. For example, if the given set is {1, 2, 3} the permutations are:

1 2 3 1 3 2 2 1 3 2 3 1 3 1 2 3 2 1

The . . . → Read More: PHP function to generate all permutations

Removing accents from strings in PHP

Sid — Fri, 07 Jan 2011 09:26:45 +0000

A simple method for removing accents from strings in PHP:

1 2 $x = strtr($x, "ŠŒŽšœžŸ¥µÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏÐÑÒÓÔÕÖØÙÚÛÜÝßàáâãäåæçèéêëìíîïðñòóôõöøùúûüýÿ", "SOZsozYYuAAAAAAACEEEEIIIIDNOOOOOOUUUUYsaaaaaaaceeeeiiiionoooooouuuuyy");

And so you code…

Sid — Wed, 08 Sep 2010 11:45:30 +0000

Polybius cipher

Mihaela — Tue, 07 Sep 2010 10:01:53 +0000

Polybius cipher is a basic form of encryption invented by the Ancient Greek Historian whose name it bears. It is based on fractionating plaintext characters so they can be represented by a smaller set of symbols. In plain English: all the letters of the alphabet are written in a 5×5 square like the one . . . → Read More: Polybius cipher

Accessing POST data

Sid — Thu, 05 Aug 2010 06:10:35 +0000

Handling XML requests from PHP involves accessing the raw POST data. This can be done by accessing the $HTTP_RAW_POST_DATA variable, but this depends on having the always_populate_raw_post_data directive enabled in your php.ini. A less memory intensive alternative is php://input, which doesn’t need any special php.ini setting, but it’s not available for multipart/form-data requests.

Reading . . . → Read More: Accessing POST data

Firefox 4.0 beta 1

Sid — Wed, 07 Jul 2010 12:23:16 +0000

Yesterday Mozilla released the first beta of Firefox 4. It includes a redesigned interface, more HTML 5 support and other features. It also brings a good laugh:

Download it HERE.

Vigenere cipher

Mihaela — Wed, 07 Jul 2010 11:58:47 +0000

Vigenere cipher is an encryption technique consisting of a sequence of Caesar cipher each based on the letters of a secret text called a keyword. This mechanism is classified as polyalphabetic substitution.

In Caesar substitution each letter was shifted a number of positions down the alphabet. For example choosing the secret key to be . . . → Read More: Vigenere cipher

HTML 5 – features and support

Sid — Tue, 06 Jul 2010 15:41:15 +0000

HTML 5 is the next major revision of the HyperText Markup Language. It’s currently being developed as the next standard to present content on the World Wide Web. HTML 5 includes new features that were previously handled by various plugins. These new features include video and sound support, drag and drop, client side database . . . → Read More: HTML 5 – features and support

Caesar cipher

Mihaela — Mon, 05 Jul 2010 18:34:55 +0000

If you are the geeky type, like a lot of people I happen to know (…OK fine, yours truly also) sometime in your childhood you discovered some simple forms of encryption and became fascinated by them to the point where you started creating your own alphabets and childish methods of obscuring texts. And it’s . . . → Read More: Caesar cipher