Perl 正则表达式匹配 IP 地址 [英] Perl regular expression to match an IP address

问题描述

我写了这段代码，但它不起作用.有人能指出问题吗?

I have written this code, but it does not work. Can someone point out the issue?

sub match_ip()
{
  my $ip = "The IP address is 216.108.225.236:60099";
  if($ip =~ /(d{1-3}.d{1-3}.d{1-3}.d{1-3}:d{1-5})/)
  {
      print "$1
";
  }
}

我只想提取 IP 地址，不做任何验证.

I wanted to just extract the IP address, not do any validation.

推荐答案

将 {1-3} 更改为 {1,3} 与 {1 相同-5} -> {1,5}

Change {1-3} to {1,3} same for {1-5} -> {1,5}

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