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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 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 A simple method for removing accents from strings in PHP: 1 2 $x = strtr($x, "ŠŒŽšœžŸ¥µÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏÐÑÒÓÔÕÖØÙÚÛÜÝßàáâãäåæçèéêëìíîïðñòóôõöøùúûüýÿ", "SOZsozYYuAAAAAAACEEEEIIIIDNOOOOOOUUUUYsaaaaaaaceeeeiiiionoooooouuuuyy"); 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 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 |
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