preg-match - 正则表达式的 preg_match

Question

请帮我将此代码转换为 preg_match

$blacklist = $db->query("SELECT `content` FROM `" . TABLE_PREFIX . "blacklist` WHERE `type`='$type'");
while ($blacklisted = $db->fetch_array($blacklist))
{
    if (is_array($input))
    {
        foreach ($input as $entry)
        {
            if (eregi($blacklisted['content'], $entry))
                print_error($msg);
        }
    }
    else if (eregi($blacklisted['content'], $input))
    {
        print_error($msg);
    }
}

Answer 1

eregi曾经像这样使用来查看一个字符串是否在另一个字符串中。这不是正确的用途。你可以这样做stripos

$blacklist = $db->query("SELECT `content` FROM `" . TABLE_PREFIX . "blacklist` WHERE `type`='$type'");
while ($blacklisted = $db->fetch_array($blacklist))
{
    if (is_array($input))
    {
        foreach ($input as $entry)
        {
            if (false !== stripos($entry, $blacklisted['content']))
                print_error($msg);
        }
    }
    else if (false !== stripos($input, $blacklisted['content']))
    {
        print_error($msg);
    }
}