/**
* Get whether iconv extension is available
*
* @return boolean
*/
public static function getIsIconvEnabled()
{
if (isset(self::$isIconvEnabled)) {
return self::$isIconvEnabled;
}
// Fail if iconv doesn't exist
if (!function_exists('iconv')) {
self::$isIconvEnabled = false;
return false;
}
// Sometimes iconv is not working, and e.g. iconv('UTF-8', 'UTF-16LE', 'x') just returns false,
if (!@iconv('UTF-8', 'UTF-16LE', 'x')) {
self::$isIconvEnabled = false;
return false;
}
// Sometimes iconv_substr('A', 0, 1, 'UTF-8') just returns false in PHP 5.2.0
// we cannot use iconv in that case either (http://bugs.php.net/bug.php?id=37773)
if (!@iconv_substr('A', 0, 1, 'UTF-8')) {
self::$isIconvEnabled = false;
return false;
}
// CUSTOM: IBM AIX iconv() does not work
if (defined('PHP_OS') && @stristr(PHP_OS, 'AIX') && defined('ICONV_IMPL') && @strcasecmp(ICONV_IMPL, 'unknown') == 0 && defined('ICONV_VERSION') && @strcasecmp(ICONV_VERSION, 'unknown') == 0) {
self::$isIconvEnabled = false;
return false;
}
// If we reach here no problems were detected with iconv
self::$isIconvEnabled = true;
return true;
}
