/**
* Sets/Gets internal character encoding of the regular expression functions (ereg-like) within the PHP mbstring extension.
* @param string $encoding (optional) When this parameter is given, the function sets the internal encoding.
* @return string When $encoding parameter is not given, the function returns the internal encoding.
* Note: This function is used in the global initialization script for setting the internal encoding to the platform's character set.
* @link http://php.net/manual/en/function.mb-regex-encoding
*/
function _api_mb_regex_encoding($encoding = null)
{
static $mb_regex_encoding = null;
if (empty($encoding)) {
if (is_null($mb_regex_encoding)) {
if (MBSTRING_INSTALLED) {
$mb_regex_encoding = @mb_regex_encoding();
} else {
$mb_regex_encoding = 'UTF-8';
}
}
return $mb_regex_encoding;
}
$mb_regex_encoding = $encoding;
if (_api_mb_supports($encoding)) {
return @mb_regex_encoding($encoding);
}
return false;
}
/**
* Checks whether a specified encoding is supported by this API.
* @param string $encoding The specified encoding.
* @return bool Returns TRUE when the specified encoding is supported, FALSE othewise.
*/
function api_is_encoding_supported($encoding)
{
static $supported = array();
if (!isset($supported[$encoding])) {
$supported[$encoding] = _api_mb_supports($encoding) || _api_iconv_supports($encoding) || _api_convert_encoding_supports($encoding);
}
return $supported[$encoding];
}
