正则表达式匹配 URL [英] Regex to match URL

问题描述

我正在使用以下正则表达式来匹配 URL:

I am using the following regex to match a URL:

$search  = "/([\S]+\.(MUSEUM|TRAVEL|AERO|ARPA|ASIA|COOP|INFO|NAME|BIZ|CAT|COM|INT|JOBS|NET|ORG|PRO|TEL|AC|AD|AE|AF|AG|AI|AL|AM|AN|AO|AQ|AR|AS|AT|AU|au|AW|AX|AZ|BA|BB|BD|BE|BF|BG|BH|BI|BJ|BL|BM|BN|BO|BR|BS|BT|BV|BW|BY|BZ|CA|CC|CD|CF|CG|CH|CI|CK|CL|CM|CN|CO|CR|CU|CV|CX|CY|CZ|DE|DJ|DK|DM|DO|DZ|EC|EDU|EE|EG|EH|ER|ES|ET|EU|FI|FJ|FK|FM|FO|FR|GA|GB|GD|GE|GF|GG|GH|GI|GL|GM|GN|GOV|GP|GQ|GR|GS|GT|GU|GW|GY|HK|HM|HN|HR|HT|HU|ID|IE|IL|IM|IN|IO|IQ|IR|IS|IT|JE|JM|JO|JP|KE|KG|KH|KI|KM|KN|KP|KR|KW|KY|KZ|LA|LB|LC|LI|LK|LR|LS|LT|LU|LV|LY|MA|MC|MD|ME|MF|MG|MH|MIL|MK|ML|MM|MN|MO|MOBI|MP|MQ|MR|MS|MT|MU|MV|MW|MX|MY|MZ|NA|NC|NE|NF|NG|NI|NL|NO|NP|NR|NU|NZ|OM|PA|PE|PF|PG|PH|PK|PL|PM|PN|PR|PS|PT|PW|PY|QA|RE|RO|RS|RU|RW|SA|SB|SC|SD|SE|SG|SH|SI|SJ|SK|SL|SM|SN|SO|SR|ST|SU|SV|SY|SZ|TC|TD|TF|TG|TH|TJ|TK|TL|TM|TN|TO|R|H|TP|TR|TT|TV|TW|TZ|UA|UG|UK|UM|US|UY|UZ|VA|VC|VE|VG|VI|VN|VU|WF|WS|YE|YT|YU|ZA|ZM|ZW)([\S]*))/i";

但它有点搞砸了，因为它也匹配我不想要的abc.php".和像 abc...test 这样的东西.我希望它与 abc.com 相匹配.和 www.abc.com 以及 http://abc.com.

But its a bit screwed up because it also matches "abc.php" which I dont want. and something like abc...test. I want it to match abc.com though. and www.abc.com as well as http://abc.com.

最后只需要稍微调整一下，但我不确定是什么.(现在不检查的任何域名后面应该有一个斜杠，它只检查 \S)

It just needs a slight tweak at the end but I am not sure what. (there should be a slash after the any domain name which it is not checking for right now and it is only checking \S)

感谢您的时间.

推荐答案

$search  = "#^((?#
    the scheme:
  )(?:https?://)(?#
    second level domains and beyond:
  )(?:[\S]+\.)+((?#
    top level domains:
  )MUSEUM|TRAVEL|AERO|ARPA|ASIA|EDU|GOV|MIL|MOBI|(?#
  )COOP|INFO|NAME|BIZ|CAT|COM|INT|JOBS|NET|ORG|PRO|TEL|(?#
  )A[CDEFGILMNOQRSTUWXZ]|B[ABDEFGHIJLMNORSTVWYZ]|(?#
  )C[ACDFGHIKLMNORUVXYZ]|D[EJKMOZ]|(?#
  )E[CEGHRSTU]|F[IJKMOR]|G[ABDEFGHILMNPQRSTUWY]|(?#
  )H[KMNRTU]|I[DELMNOQRST]|J[EMOP]|(?#
  )K[EGHIMNPRWYZ]|L[ABCIKRSTUVY]|M[ACDEFGHKLMNOPQRSTUVWXYZ]|(?#
  )N[ACEFGILOPRUZ]|OM|P[AEFGHKLMNRSTWY]|QA|R[EOSUW]|(?#
  )S[ABCDEGHIJKLMNORTUVYZ]|T[CDFGHJKLMNOPRTVWZ]|(?#
  )U[AGKMSYZ]|V[ACEGINU]|W[FS]|Y[ETU]|Z[AMW])(?#
    the path, can be there or not:
  )(/[a-z0-9\._/~%\-\+&\#\?!=\(\)@]*)?)$#i";

刚刚清理了一下.这将仅匹配 HTTP(s) 地址，并且，只要您从 IANA 正确复制了所有顶级域，只有那些标准化的(它将不匹配http://localhost) 和 with 声明的 http://.

Just cleaned up a bit. This will match only HTTP(s) addresses, and, as long as you copied all top level domains correctly from IANA, only those standardized (it will not match http://localhost) and with the http:// declared.

最后你应该以路径部分结束，它总是以/开头，如果它在那里.

Finally you should end with the path part, that will always start with a /, if it is there.

不过，我建议遵循 Cerebrus:如果您对此不确定，请以更温和的方式学习正则表达式，并使用经过验证的模式来处理复杂的任务.

However, I'd suggest to follow Cerebrus: If you're not sure about this, learn regexps in a more gentle way and use proven patterns for complicated tasks.

干杯，

顺便说一句:您的正则表达式也将匹配 something.r 和 something.h(在 |TO| 和 |TR| 之间你的例子).我在我的版本中遗漏了它们，因为我猜这是一个错字.

By the way: Your regexp will also match something.r and something.h (between |TO| and |TR| in your example). I left them out in my version, as I guess it was a typo.

重新阅读问题:改变

  )(?:https?://)(?#

到

  )(?:https?://)?(?#

(有一个 ? 额外的)来匹配没有方案的URL".

(there is a ? extra) to match 'URLs' without the scheme.

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