在PHP中使用’@’是开箱即用的选项吗？

使用at符号(@)进行函数调用是一个标准的开箱即用选项,还是需要在PHP.ini中启用它？

我在error_log文件中收到以下服务器错误：

PHP Parse错误：语法错误,第467行/htdocs/www/PHPMyAdmin/libraries/common.inc.PHP中的意外“@”

这是PHP脚本文件中的第467行：
if(@extension_loaded(‘mbstring’)&&！empty(@ini_get(‘mbstring.func_overload’))){

如果需要在PHP.ini中启用它可能是什么？

谢谢.

修订

这是抛出错误的代码块：

/**
 * check for errors occurred while loading configuration
 * this check is done here after loading language files to present errors in locale
 */
$GLOBALS['PMA_Config']->checkPermissions();
$GLOBALS['PMA_Config']->checkerrors();

/**
 * As we try to handle charsets by ourself, mbstring overloads just
 * break it, see bug 1063821.
 *
 * We specifically use empty here as we are looking for anything else than
 * empty value or 0.
 */
if (@extension_loaded('mbstring') && !empty(@ini_get('mbstring.func_overload'))) {
    PMA_fatalError(
        __(
            'You have enabled mbstring.func_overload in your PHP '
            . 'configuration. This option is incompatible with PHPMyAdmin '
            . 'and might cause some data to be corrupted!'
        )
    );
}

解决方法:

从PHP: empty – Manual起

Prior to PHP 5.5, empty() only supports variables; anything else
will result in a parse error. In other words, the following will not
work: empty(trim($name)). Instead, use trim($name) == false.

所以@不是变量并产生错误.如果从empty()调用中删除@：

if (@extension_loaded('mbstring') && !empty(ini_get('mbstring.func_overload'))) {}

它仍将生成以下解析错误：

Parse error: Syntax error, unexpected T_STRING, expecting T_VARIABLE or ‘$’

PHP 5.3.3于7年前发布,3年多来一直没有得到支持.如果无法升级(推荐)请使用phpMyAdmin 4.0.10.20.