duankang5285 2011-11-24 06:40
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PHP Regex删除特定的CSS Comment

I want to write the regular expression in php matching condition below:

   /* 
    Remove this comment line 1
    Remove this comment line 2
   */
   .class1
   {
      background:#CCC url(images/bg.png);
   }

   .class2
   {
      color: #FFF;
      background:#666 url(images/bg.png); /* DON'T remove this comment */
   }

   /* Remove this comment */
   .class3
   {
      margin:2px;
      color:#999;
      background:#FFF; /* DON'T Remove this comment */
   }

    ...etc
    ...etc

Please any one give me a regular expression in php. Thanks.

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  • dpbf62565 2011-11-24 06:52
    关注

    If the rule is that you want to remove all comments where there is no other code on the line then something like this should work:

    /^(\s*\/\*.*?\*\/\s*)$/m
    

    The 'm' option makes ^ and $ match the beginning and end of a line. Do you expect the comments to run for more than one line?

    EDIT:

    I'm pretty sure this fits the bill:

    /(^|
    )\s*\/\*.*?\*\/\s*/s
    

    Do you understand what it's doing?

    本回答被题主选为最佳回答 , 对您是否有帮助呢?
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