php - PHP错误处理-未定义偏移

Question

我已经检查了我的apache错误日志，并且看到了如下多个消息:

client 108.162.246.190] PHP Notice:  Undefined offset: 4 in /var/www/html/search.php on line 142
[Tue Dec 31 00:17:48 2013] [error] [client 108.162.246.190] PHP Notice:  Undefined offset: 5 in /var/www/html/search.php on line 142
[Tue Dec 31 00:17:48 2013] [error] [client 108.162.246.190] PHP Notice:  Undefined offset: 5 in /var/www/html/search.php on line 143
[Tue Dec 31 00:17:48 2013] [error] [client 108.162.246.190] PHP Notice:  Undefined offset: 6 in /var/www/html/search.php on line 142
[Tue Dec 31 00:17:48 2013] [error] [client 108.162.246.190] PHP Notice:  Undefined offset: 6 in /var/www/html/search.php on line 143
[Tue Dec 31 00:17:48 2013] [error] [client 108.162.246.190] PHP Notice:  Undefined offset: 7 in /var/www/html/search.php on line 142
[Tue Dec 31 00:17:48 2013] [error] [client 108.162.246.190] PHP Notice:  Undefined offset: 7 in /var/www/html/search.php on line 143
[Tue Dec 31 00:17:48 2013] [error] [client 108.162.246.190] PHP Notice:  Undefined offset: 8 in /var/www/html/search.php on line 142
[Tue Dec 31 00:17:48 2013] [error] [client 108.162.246.190] PHP Notice:  Undefined offset: 8 in /var/www/html/search.php on line 143
[Tue Dec 31 00:17:48 2013] [error] [client 108.162.246.190] PHP Notice:  Undefined offset: 9 in /var/www/html/search.php on line 142
[Tue Dec 31 00:17:48 2013] [error] [client 108.162.246.190] PHP Notice:  Undefined offset: 9 in /var/www/html/search.php on line 143

围绕142-143行的代码如下所示(实际的142-143行是内爆的):

    if ($nuorodoshut != NULL)
        {
            foreach ($nuorodoshut as $key => $nuorodahut) 
            {   
            $keywords = explode(' ', $qsvarus);
            $title[$key] = preg_replace('/\b('.implode('|', $keywords).')\b(?![^<]*[>])/i', '<b>$0</b>', $title[$key]);
            $infoo[$key] = preg_replace('/\b('.implode('|', $keywords).')\b(?![^<]*[>])/i', '<b>$0</b>', $infoo[$key]);
            echo '<tr><td><h3>';
            echo str_replace('<a href="/', '<a href="/host/', $nuorodahut->innertext) . '</h3>';
            echo $aprasymashut[$key]->innertext . '<br>';

            }
}

我只是无法处理此错误。任何帮助，将不胜感激

Answer 1

错误消息告诉您，当$title[$key]为$infoo[$key]-$key时，没有5和9。如果这两个数组都应具有与$nuorodoshut相同的索引，则在创建数组时出了点问题。

如果可以确定它们不应该包含这些元素，则在使用这些值之前，需要先进行检查，例如

$title[$key] = isset($title[$key]) ? preg_replace('/\b('.implode('|', $keywords).')\b(?![^<]*[>])/i', '<b>$0</b>', $title[$key]) : '';
$infoo[$key] = isset($infoo[$key]) ? preg_replace('/\b('.implode('|', $keywords).')\b(?![^<]*[>])/i', '<b>$0</b>', $infoo[$key]) : '';