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gyro/modules/json/lib/helpers/converters/json.cls.php

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<?php
/**
 * Convertes from and to JSON
 * Use either directly or through ConverterFactory like this:
 * 
 * @code
 * // To JSON
 * $json_string = ConverterFactory::encode($data, CONVERTER_JSON);
 * // Back from JSON to data structure
 * $data = ConverterFactory::decode($json_string, CONVERTER_JSON);
 * @endcode
 * 
 * @author Gerd Riesselmann
 * @ingroup JSON
 */
class GyroJSON implements IConverter {
        /**
         * Decode string to data
         *
         * @param string $str
         * @return mixed
         */     
        public function decode($str, $params = false) {
                $ret = false;
                if (function_exists('json_decode')) {
                        // PHP 5.2 or PECL extension
                        // There is a bug in json_decode and floating values before PHP 5.2.2
                        // http://bugs.php.net/bug.php?id=41403 
                        $cur_locale = setlocale(LC_NUMERIC, '0');
                        setlocale(LC_NUMERIC, 'C'); // system
                        $ret = json_decode($str);
                        setlocale(LC_NUMERIC, $cur_locale); // back
                        return $ret;
                }
                else {
                        // Try PEAR Package Services_JSON
                        include_once 'Services/JSON.php';
                        if (class_exists('Services_JSON')) {
                                $json = new Services_JSON();
                                return $json->decode($str);
                        }
                }
                throw new Exception(tr('No JSON implementation found', 'ajax'));                
        }
        
        /**
         * Turns data in a JSON string
         *
         * @param mixed $data
         * @return string
         */
        public function encode($data, $params = false) {
                if (function_exists('json_encode')) {
                        // PHP 5.2 or PECL extension
                        // There is a bug in json_encode and floating values before PHP 5.2.2
                        // http://bugs.php.net/bug.php?id=41403 
                        $cur_locale = setlocale(LC_NUMERIC, '0');
                        setlocale(LC_NUMERIC, 'C'); // system
                        $ret = json_encode($data);
                        setlocale(LC_NUMERIC, $cur_locale); // back
                        return $ret;
                }
                // Try PEAR Package Services_JSON
                include_once 'Services/JSON.php';
                if (class_exists('Services_JSON')) {
                        $json = new Services_JSON();
                        return $json->encode($str);
                }
                throw new Exception(tr('No JSON implementation found', 'ajax'));                
        }
}
?>

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