/**
* json_encode
*
* @param mixvar $var 多类型变量
* @param string $charset 默认'utf-8'源变量中字符编码 'utf-8' or 'gb2312' or 'big5'
* @return string
*/
public static function jsonencode($var, $charset = NULL)
{
if (is_null($charset)) {
$charset = self::$source_lang;
} else {
self::$source_lang = $charset;
}
if (!$charset) {
$charset = 'utf-8';
}
switch (gettype($var)) {
case 'boolean':
return $var ? 'true' : 'false';
case 'NULL':
return 'null';
case 'integer':
return (int) $var;
case 'double':
case 'float':
return (double) $var;
case 'string':
$var = self::escape($var, $charset);
return '"' . $var . '"';
case 'array':
return self::encodearray($var);
case 'object':
$var = get_object_vars($var);
return self::encodearray($var);
default:
return 'null';
}
}
