tianye / WechatMpSDK

src/Utils/JSON.php

<?php

For compatibility and reusability of your code, PSR1 recommends that a file should introduce either new symbols (like classes, functions, etc.) or have side-effects (like outputting something, or including other files), but not both at the same time. The first symbol is defined on line 11 and the first side effect is on line 11.

/**
 * JSON.php
 *
 * @author Tian.
 */

namespace Wechat\Utils;

// for PHP5.3, prevent PHP Notice msg assumed
defined('JSON_UNESCAPED_UNICODE') || define('JSON_UNESCAPED_UNICODE', 256);

/**
 * Unicode2multi characters supported for the wechat server
 */
class JSON
{
    /**
     * To prevent new operation, under static usage only
     */
    protected function __construct()
    {
    }

    /**
     * PHP >= 5.3 JSON_UNESCAPED_UNICODE constant supported
     *
     * @param mixed $value   The value (except a resource) being encoded.
     * @param int   $options Bitmask consisting of blah...
     * @param int   $depth   Set the maximum depth. Must be greater than zero.
     *
     * @see http://php.net/manual/en/function.json-encode.php
     *
     * @return mixed Returns a string containing the JSON representation of data
     */
    public static function encode($value, $options = 0, $depth = 512)
    {
        // multi-characters supported by default
        $options |= JSON_UNESCAPED_UNICODE;

        $data = version_compare(PHP_VERSION, '5.5.0', '>=')
            ? json_encode($value, $options, $depth)
            : json_encode($value, $options);

        if (JSON_ERROR_NONE !== json_last_error()) {
            return $data;
        }

        return version_compare(PHP_VERSION, '5.4.0', '>=')
            ? $data
            : preg_replace_callback("/\\\\u([0-9a-f]{2})([0-9a-f]{2})/iu", function ($pipe) {
                return iconv(
                    strncasecmp(PHP_OS, 'WIN', 3) ? 'UCS-2BE' : 'UCS-2',
                    'UTF-8',
                    chr(hexdec($pipe[1])) . chr(hexdec($pipe[2]))
                );
            }, $data);
    }

    /**
     * PHP >= 5.3 options supported (TODO)
     *
     * @param string $json    The json string being decoded.
     * @param bool   $assoc   When TRUE, returned objects will be converted into associative arrays.
     * @param int    $depth   User specified recursion depth.
     * @param int    $options Bitmask of JSON decode options blah...
     *
     * @see http://php.net/manual/en/function.json-decode.php
     *
     * @return mixed Returns the value encoded in json in appropriate PHP type.
     */
    public static function decode($json, $assoc = false, $depth = 512, $options = 0)
    {
        if (version_compare(PHP_VERSION, '5.4.0', '>=')) {
            return json_decode($json, $assoc, $depth, $options);
        }

        return json_decode($json, $assoc, $depth);
    }
}