PHP URL验证

Question

我知道有无数线程提出这个问题，但我找不到能帮助我解决这个问题的线索。

我基本上是在尝试解析大约10,000,000个URL的列表，确保它们符合以下条件，然后获取根域URL。此列表包含您可以想象的所有内容，包括（和预期的格式化URL）之类的内容：

biy.ly/test [VALID] [return - bit.ly]
example.com/apples?test=1&id=4 [VALID] [return - example.com]
host101.wow404.apples.test.com/cert/blah [VALID] [return - test.com]
101.121.44.xxx [**inVALID**] [return false]
localhost/noway [**inVALID**] [return false]
www.awesome.com [VALID] [return - awesome.com]
i am so awesome [**inVALID**] [return false]
http://404.mynewsite.com/visits/page/view/1/ [VALID] [return - mynewsite.com]
www1.151.com/searchresults [VALID] [return - 151.com]

有人对此有任何建议吗？

Answer 1

^(?:https?://)?(?:[a-z0-9-]+\.)*((?:[a-z0-9-]+\.)[a-z]+)

解释

^                # start-of-line
(?:              # begin non-capturing group
  https?         #   "http" or "https"
  ://            #   "://"
)?               # end non-capturing group, make optional
(?:              # start non-capturing group
  [a-z0-9-]+\.   #   a name part (numbers, ASCII letters, dashes) & a dot
)*               # end non-capturing group, match as often as possible
(                # begin group 1 (this will be the domain name)
  (?:            #   start non-capturing group
    [a-z0-9-]+\. #     a name part, same as above
  )              #   end non-capturing group
  [a-z]+         #   the TLD
)                # end group 1 

http://rubular.com/r/g6s9bQpNnC

Answer 2

我会从默认开始：

filter_var($inputUrl, FILTER_VALIDATE_URL);

然后添加您无法接受进一步验证的特殊情况。这应该简化一下。

至于获得主持人。

parse_url($inputUrl, PHP_URL_HOST);

Answer 3

^(([a-zA-Z](\.[a-zA-Z])+)|([0-9]{1,3}(\.[0-9]{1,3}){3})/.*$

修改

在php中preg_match ( '^(([a-zA-Z](\.[a-zA-Z])+)|([0-9]{1,3}(\.[0-9]{1,3}){3})/.*$' , $myUrls , $matches)

您需要的是$matches[1]

Answer 4

$website = test_input($_POST["website"]);
if (!preg_match("/\b(?:(?:https?|ftp):\/\/|www\.)[-a-z0-9+&@#\/%?=~_|!:,.;]*[-a-z0-9+&@#\/%=~_|]/i",$w$website = test_input($_POST["website"]);
if (!preg_match("/\b(?:(?:https?|ftp):\/\/|www\.)[-a-z0-9+&@#\/%?=~_|!:,.;]*[-a-z0-9+&@#\/%=~_|]/i",$website))
  {
  $websiteErr = "Invalid URL";
  }ebsite))
  {
  $websiteErr = "Invalid URL";
  }