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Configuration of convert_cyr_string()

<?php
/**
 * PHP By Example
 *
 * @copyright 2015 Michel Corne
 * @license   http://www.opensource.org/licenses/gpl-3.0.html GNU GPL v3
 */

require_once 'models/function_core.php';

/**
 * Function configuration
 *
 * @see docs/function-configuration.txt
 */

class convert_cyr_string extends function_core
{
    const 
CHARSETS = [
        [
'k''koi8-r'],
        [
'w''windows-1251'],
        [
'i''iso8859-5'],
        [
'a''x-cp866'],
        [
'd''x-cp866'],
        [
'm''x-mac-cyrillic'],
    ];

    public 
$commented_options = ['from' => self::CHARSETS'to' => self::CHARSETS];

    public 
$examples = [
        [
            
'_DOUBLE_QUOTES_\x70\xF0_DOUBLE_QUOTES_'// pП
            
'k',
            
'i',
        ],
    ];

    public 
$source_code '
        inject_function_call

        // shows the result in hexadecimal
        $hex = bin2hex($string);
    '
;

    public 
$synopsis 'string convert_cyr_string ( string $str , string $from , string $to )';

    function 
post_exec_function()
    {
        
$this->result['hex'] = bin2hex($this->result['string']);
    }
}