Regex URL的正则表达式显示“URL”；。“金融”；无效/错误_Regex_Laravel

Regex URL的正则表达式显示“URL”；。“金融”；无效/错误

regex laravel

Regex URL的正则表达式显示“URL”；。“金融”；无效/错误,regex,laravel,Regex,Laravel,我为我的laravel URL验证器得到了这个正则表达式，如果我放了一个“.finance”域，它表明它与正则表达式相反。怎么了？到目前为止，所有其他经过测试的域结尾都能正常工作 $regex = '/^(http:\/\/www\.|https:\/\/www\.|http:\/\/|https:\/\/)?[a-z0-9]+([\-\.]{1}[a-z0-9]+)*\.[a-z]{2,5}(:[0-9]{1,5})?(\/.*)?$/'; 将[a-z]{2,5}替换为[a-z]{2,5}，

我为我的laravel URL验证器得到了这个正则表达式，如果我放了一个“.finance”域，它表明它与正则表达式相反。怎么了？到目前为止，所有其他经过测试的域结尾都能正常工作

$regex = '/^(http:\/\/www\.|https:\/\/www\.|http:\/\/|https:\/\/)?[a-z0-9]+([\-\.]{1}[a-z0-9]+)*\.[a-z]{2,5}(:[0-9]{1,5})?(\/.*)?$/';

将

[a-z]{2,5}

替换为

[a-z]{2,5}

，以允许TLD中有任意两个或多个字母

删除

{1}

，这些总是不必要的

（http:\/\/www\.\124; https:\/\/www\.\124; http:\/\/\\\/\\\/\\/）？

是一种重复的方式，使用可选组/字符将其缩短为

（？：https？：\/\/（？：www\）？

使用

/^（？：https？：\/\/（？：www\）？[a-z0-9]+（？：[-.][a-z0-9]+）*\.[a-z]{2，}（？：[0-9]{1,5}）（\/*）$/

看

解释

--------------------------------------------------------------------------------
  ^                        the beginning of the string
--------------------------------------------------------------------------------
  (?:                      group, but do not capture (optional
                           (matching the most amount possible)):
--------------------------------------------------------------------------------
    http                     'http'
--------------------------------------------------------------------------------
    s?                       's' (optional (matching the most amount
                             possible))
--------------------------------------------------------------------------------
    :                        ':'
--------------------------------------------------------------------------------
    \/                       '/'
--------------------------------------------------------------------------------
    \/                       '/'
--------------------------------------------------------------------------------
    (?:                      group, but do not capture (optional
                             (matching the most amount possible)):
--------------------------------------------------------------------------------
      www                      'www'
--------------------------------------------------------------------------------
      \.                       '.'
--------------------------------------------------------------------------------
    )?                       end of grouping
--------------------------------------------------------------------------------
  )?                       end of grouping
--------------------------------------------------------------------------------
  [a-z0-9]+                any character of: 'a' to 'z', '0' to '9'
                           (1 or more times (matching the most amount
                           possible))
--------------------------------------------------------------------------------
  (?:                      group, but do not capture (0 or more times
                           (matching the most amount possible)):
--------------------------------------------------------------------------------
    [-.]                     any character of: '-', '.'
--------------------------------------------------------------------------------
    [a-z0-9]+                any character of: 'a' to 'z', '0' to '9'
                             (1 or more times (matching the most
                             amount possible))
--------------------------------------------------------------------------------
  )*                       end of grouping
--------------------------------------------------------------------------------
  \.                       '.'
--------------------------------------------------------------------------------
  [a-z]{2,}                any character of: 'a' to 'z' (at least 2
                           times (matching the most amount possible))
--------------------------------------------------------------------------------
  (?:                      group, but do not capture (optional
                           (matching the most amount possible)):
--------------------------------------------------------------------------------
    :                        ':'
--------------------------------------------------------------------------------
    [0-9]{1,5}               any character of: '0' to '9' (between 1
                             and 5 times (matching the most amount
                             possible))
--------------------------------------------------------------------------------
  )?                       end of grouping
--------------------------------------------------------------------------------
  (                        group and capture to \1 (optional
                           (matching the most amount possible)):
--------------------------------------------------------------------------------
    \/                       '/'
--------------------------------------------------------------------------------
    .*                       any character except \n (0 or more times
                             (matching the most amount possible))
--------------------------------------------------------------------------------
  )?                       end of \1 (NOTE: because you are using a
                           quantifier on this capture, only the LAST
                           repetition of the captured pattern will be
                           stored in \1)
--------------------------------------------------------------------------------
  $                        before an optional \n, and the end of the
                           string

在

{2,5}

finance

中增加5个字符是7个字符非常感谢！