使用正则表达式，PHP解析日志文件

Question

我在regex上绝对糟糕。 谁能帮助我解决需要从表达式文件中分离出我需要的两个值的表达式？

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，我可以分离IP地址，但是现在我需要状态（添加/删除）和IP地址。 这是我当前的代码。

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

我需要做什么来取代“/ {（）} * /”，以便抓住这两个国家并存储到阵列的IP地址？

Answer 1

您实际上不需要正则表达式来匹配它。 您可以使用preg_split()和\\s+作为分隔符在空格上进行分割，然后使用trim()类的简单功能从IP地址中删除括号{} 。

$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

如果只有这两个单词需要说明，您是否尝试过类似的方法？

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

因此总计：

$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);

结果是：

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

我认为这对您有效；

$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
        )
    ...