Question

我在正则表达式上非常糟糕;任何人都可以帮我解决我需要的表达式，以便从日志文件中分离出我需要的两个值吗？

日志文件示例。

1/28/2013 8:43:22 PM Removed        {178.76.234.41}
1/28/2013 8:43:22 PM Removed        {78.105.26.0}
1/28/2013 8:43:22 PM Removed        {24.165.198.12}
1/28/2013 8:43:23 PM Added          {178.76.234.41}
1/28/2013 8:43:23 PM Added          {69.246.227.43}

使用我当前的代码，我能够分离IP地址，但是我现在需要状态（添加/删除）和IP地址。这是我目前的代码。

preg_match_all("/.*{(.*)}.*/", $a, $b);

我需要更换什么＆＃34; /。 {（。）}。* /＆＃34;用以获取要存储到数组中的状态和IP地址？

Answer 1

您实际上并不需要正则表达式来匹配它。您可以使用preg_split()和\s+作为分隔符在空白处拆分，然后使用{}之类的简单函数从IP地址中删除大括号trim()。

$output = array();

// While reading line by line...
$parts = preg_split('/\s+/', $line);
$output[] = array(
  'state' => $parts[3],
  'ip' => trim($parts[4], '{}')
);

http://codepad.viper-7.com/fD8kgQ

Answer 2

如果这些是您需要包含的两个单词，您是否尝试过类似的内容？

preg_match_all("~(Removed|Added)\s+{(.*)}~i", $a, $b);

所以总的来说：

$a = '1/28/2013 8:43:22 PM Removed        {178.76.234.41}
      1/28/2013 8:43:22 PM Removed        {78.105.26.0}
      1/28/2013 8:43:22 PM Removed        {24.165.198.12}
      1/28/2013 8:43:23 PM Added          {178.76.234.41}
      1/28/2013 8:43:23 PM Added          {69.246.227.43}';
preg_match_all("~(Removed|Added)\s+{(.*)}~i", $a, $b);
print_r($b);

导致这个：

Array ( [0] => Array ( [0] => Removed {178.76.234.41} [1] => Removed {78.105.26.0} [2] => Removed {24.165.198.12} [3] => Added {178.76.234.41} [4] => Added {69.246.227.43} ) [1] => Array ( [0] => Removed [1] => Removed [2] => Removed [3] => Added [4] => Added ) [2] => Array ( [0] => 178.76.234.41 [1] => 78.105.26.0 [2] => 24.165.198.12 [3] => 178.76.234.41 [4] => 69.246.227.43 ) )

Answer 3

我认为这适合你;

$s = '1/28/2013 8:43:22 PM Removed        {178.76.234.41}
      1/28/2013 8:43:22 PM Removed        {78.105.26.0}
      1/28/2013 8:43:22 PM Removed        {24.165.198.12}
      1/28/2013 8:43:23 PM Added          {178.76.234.41}
      1/28/2013 8:43:23 PM Added          {69.246.227.43}';
preg_match_all('~(?P<TIME>.*PM)\s+(?P<STATE>Added|Removed)\s+{(?P<IP>.*)}~i', $s, $m, PREG_SET_ORDER);
print_r($m);
// or 
foreach ($m as $log) {
    printf("Time: %s, State: %s, Ip: %s\n", $log['TIME'], $log['STATE'], $log['IP']);
    // Time: 1/28/2013 8:43:22 PM, State: Removed, Ip: 178.76.234.41 ...
}

出;

Array
(
    [0] => Array
        (
            [0] => 1/28/2013 8:43:22 PM Removed        {178.76.234.41}
            [TIME] => 1/28/2013 8:43:22 PM
            [1] => 1/28/2013 8:43:22 PM
            [STATE] => Removed
            [2] => Removed
            [IP] => 178.76.234.41
            [3] => 178.76.234.41
        )

    [1] => Array
        (
            [0] => 1/28/2013 8:43:22 PM Removed        {78.105.26.0}
            [TIME] => 1/28/2013 8:43:22 PM
            [1] => 1/28/2013 8:43:22 PM
            [STATE] => Removed
            [2] => Removed
            [IP] => 78.105.26.0
            [3] => 78.105.26.0
        )
    ...

使用正则表达式PHP解析日志文件

3 个答案: