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我有那个正则表达式来捕获 php 中的任何 url：

((([A-Za-z]{3,9}:(?:\/\/)?)(?:[-;:&=\+\$,\w]+@)?[A-Za-z0-9.-]+|(?:www.|[-;:&=\+\$,\w]+@)[A-Za-z0-9.-]+)((?:\/[\+~%\/.\w-_]*)?\??(?:[-\+=&;%@.\w_]*)#?(?:[\w]*))?)

但它没有捕捉到完整的网址.....例如

这里：

http://v12.lscache6.c.youtube.com/videoplayback?app=youtube_gdata&devkey=AX8iKz393pCCMUL6wqrPOZoO88HsQjpE1a8d1GxQnGDm&el=videos&upn=0K3DA3wYhjI&uaopt=no-save&source=youtube&itag=18&id=ab59b1e9554eca6d&ip=0.0.0.0&ipbits=0&expire=1339342342&sparams=id,itag,source,uaopt,upn,ip,ipbits,expire&signature=5026BE137B41D5CD9785E752D1892903D432974C.BA1D4E0C138210B2275391A2A3D469E582183621&key=yta1&cms_redirect=yes

它只抓住了：

http://v12.lscache6.c.youtube.com/videoplayback?app=youtube_gdata&devkey=AX8iKz393pCCMUL6wqrPOZoO88HsQjpE1a8d1GxQnGDm&el=videos&upn=0K3DA3wYhjI&uaopt=no-save&source=youtube&itag=18&id=ab59b1e9554eca6d&ip=0.0.0.0&ipbits=0&expire=1339342342&sparams=id

那么我需要什么来捕获完整的网址？

4

2 回答 2

1

您需要在正则表达式中添加一个逗号字符：

您的正则表达式已修复：

((([A-Za-z]{3,9}:(?:\/\/)?)(?:[-;:&=\+\$,\w]+@)?[A-Za-z0-9.-]+|(?:www.|[-;:&=\+\$,\w]+@)[A-Za-z0-9.-]+)((?:\/[\+~%\/.\w-_]*)?\??(?:[-\+=&;%@,.\w_]*)#?(?:[\w]*)?))

验证正则表达式的好网站：Rubular

如果要将 URL 分解为部分，可以使用 parse_url() PHP 函数

于 2012-05-17T16:03:43.930 回答
0

可以试试这个：

\b(?:(?:https?|ftp|file)://|www\.|ftp\.)[-A-Z0-9+&@#/%=~_|$?!:,.]*[A-Z0-9+&@#/%=~_|$]

解释

<!--
\b(?:(?:https?|ftp|file)://|www\.|ftp\.)[-A-Z0-9+&@#/%=~_|$?!:,.]*[A-Z0-9+&@#/%=~_|$]

Options: case insensitive

Assert position at a word boundary «\b»
Match the regular expression below «(?:(?:https?|ftp|file)://|www\.|ftp\.)»
   Match either the regular expression below (attempting the next alternative only if this one fails) «(?:https?|ftp|file)://»
      Match the regular expression below «(?:https?|ftp|file)»
         Match either the regular expression below (attempting the next alternative only if this one fails) «https?»
            Match the characters “http” literally «http»
            Match the character “s” literally «s?»
               Between zero and one times, as many times as possible, giving back as needed (greedy) «?»
         Or match regular expression number 2 below (attempting the next alternative only if this one fails) «ftp»
            Match the characters “ftp” literally «ftp»
         Or match regular expression number 3 below (the entire group fails if this one fails to match) «file»
            Match the characters “file” literally «file»
      Match the characters “://” literally «://»
   Or match regular expression number 2 below (attempting the next alternative only if this one fails) «www\.»
      Match the characters “www” literally «www»
      Match the character “.” literally «\.»
   Or match regular expression number 3 below (the entire group fails if this one fails to match) «ftp\.»
      Match the characters “ftp” literally «ftp»
      Match the character “.” literally «\.»
Match a single character present in the list below «[-A-Z0-9+&@#/%=~_|$?!:,.]*»
   Between zero and unlimited times, as many times as possible, giving back as needed (greedy) «*»
   The character “-” «-»
   A character in the range between “A” and “Z” «A-Z»
   A character in the range between “0” and “9” «0-9»
   One of the characters “+&@#/%=~_|$?!:,.” «+&@#/%=~_|$?!:,.»
Match a single character present in the list below «[A-Z0-9+&@#/%=~_|$]»
   A character in the range between “A” and “Z” «A-Z»
   A character in the range between “0” and “9” «0-9»
   One of the characters “+&@#/%=~_|$” «+&@#/%=~_|$»
-->
于 2012-05-17T16:03:55.337 回答