ChangeString.php

<?php
header('Content-Type: text/html; charset=ISO-8859-1');

/**
 * Class for convert letters from an input string
 * Restrictions: 
 *    - Work with latin alfhabet, except tilde letters.
 *    - No depend of setting of "Regional Configuration".
 * Execution using:
 * - From Console:
 *      # php ChangeString.php "<argument string>"
 *   Note:  previouly replace at line 90 by:
 *          echo $cs->build();
 * - From Code Inside, instance from Class:
 *       $cs = new ChangeString();
 *        echo $cs->build('Juan Siesquen Rosales');
 * - From Browser:
 *      http://localhost/ChangeString.php?anyvar=your-string-to-Test
 *   Note:  previouly replace at line 90 by:
 *          echo $cs->build();
 */

class ChangeString
{
    var $argCount = 0;
    var $argVals = null;
    var $stringOrg = '';
    var $lettersRange = array();
    var $allLetters = array();
    var $convLetters = array();

    function __construct()
    {
        if (isset($_SERVER['QUERY_STRING'])) {
            $arrGetString = explode("&amp;", htmlentities($_SERVER['QUERY_STRING']));
            if (strpos($arrGetString[0], '=') !== false)
                $this->stringOrg = explode("=", $arrGetString[0])[1];
        } else {
            $this->argCount = isset($argc) ? $argc:(int)$_SERVER['argc'];
            $this->argVals = isset($argv) ? $argv:$_SERVER['argv'];
            $arrGetString = array();
            $this->stringOrg = isset($this->argVals[1]) ? $this->argVals[1] : '';
        }
        $this->replacers();
    }

    function replacers()
    {
        /* letters range */
        $this->lettersRange = array_merge(
                                (array)array_slice(range('A', 'N'), 1), 
                                array(chr(ord('Ñ'))), 
                                range('O', 'Z'), array('A'), 
                                (array)array_slice(range('a', 'n'), 1), 
                                array(chr(ord('ñ'))), 
                                range('o', 'z'), array('a')
                                );
        /* letters range */

        /* letters to replace */
        $this->allLetters = array_merge(
                                range('A', 'N'), array(chr(ord('Ñ'))), 
                                range('O', 'Z'),
                                range('a', 'n'), array(chr(ord('ñ'))), 
                                range('o', 'z')
        );
        foreach ($this->allLetters as $k => $v) {
            $this->convLetters[$v] = $this->lettersRange[$k];
        }
        /* all letters */
    }

    /**
    * Update each letter within of an inputString
    */
    function build($inputString = null)
    {
        $evaluateString = null;
        if ($inputString === null)
            $evaluateString = $this->stringOrg;
        else
            $evaluateString = $inputString;

        return "Input String:\n" . $evaluateString . ";\n\n" . 
                "Result:\n" . strtr($evaluateString, $this->convLetters);
    }
}

$cs = new ChangeString();
echo $cs->build('**Casa 52Z');       // InputString Example
?>