drhzc64482 2014-03-22 15:52
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用http://替换协议相对URL

I've got an app that loads a local file and appends downloaded HTML data. This data sometimes contains protocol relative URLs, basically //domain.com/file instead of http://domain.com/file. The upside is that this automatically chooses the appropriate protocol, which would be fine on web domains, but not when loaded locally – it then uses the file://-protocol.

Therefore I need to replace all occurrences of attr="//domain.com/file" with attr="http://domain.com/file" - essentially adding http: in front. The easiest is to do it in PHP I suppose, how can I achieve this?

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  • dongqiao8502 2014-03-22 16:25
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    Using preg_replace, if 'attr' is only inside tag:

    $content = preg_replace('@(<.+?)(attr="//)(.*?>)@', '\\1attr="http://\\3', $content);
    
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