如何使用 preg_replace 删除以 // 开头的注释行，而不是像 http:// 这样的 url
我需要从我的代码中删除注释行。
preg_replace('!//(.*)!', '', $test);
效果很好。但它也删除了网站网址并留下了像http这样的网址：
所以为了避免这种情况，我把同样的内容放在 preg_replace('![^:]//(.*)!', '', $test); 中。
工作正常。但问题是，如果我的代码具有如下所示的行，
$code = 'something';// comment here
它将用分号替换注释行。那是在替换我上面的代码之后，
$code = 'something'
所以它会生成错误。
我只需要删除单行注释，网址应该保持不变。
请帮忙。提前致谢
I need to remove the comment lines from my code.
preg_replace('!//(.*)!', '', $test);
It works fine. But it removes the website url also and left the url like http:
So to avoid this I put the same like preg_replace('![^:]//(.*)!', '', $test);
It's work fine. But the problem is if my code has the line like below
$code = 'something';// comment here
It will replace the comment line with the semicolon. that is after replace my above code would be
$code = 'something'
So it generates error.
I just need to delete the single line comments and the url should remain same.
Please help. Thanks in advance
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尝试一下
，还可以阅读有关 PCRE 断言的更多信息 http://cz.php.net /manual/en/regexp.reference.assertions.php
try this
also read more about PCRE assertions http://cz.php.net/manual/en/regexp.reference.assertions.php
如果您想解析 PHP 文件并操作它包含的 PHP 代码，最好的解决方案（即使有点困难）是使用 Tokenizer ：它的存在是为了允许操作 PHP 代码。
Working with regular expressions for such a thing is a bad idea...
例如，您想到了
http://；但是包含//的字符串又如何呢？比如这个：
If you want to parse a PHP file, and manipulate the PHP code it contains, the best solution (even if a bit difficult) is to use the Tokenizer : it exists to allow manipulation of PHP code.
Working with regular expressions for such a thing is a bad idea...
For instance, you thought about
http://; but what about strings that contain//?Like this one, for example :
这很快就会变得复杂。
//在字符串中还有更多用途。如果您正在解析 PHP 代码，我强烈建议您查看 PHP tokenizer< /a>.它是专门为解析 PHP 代码而设计的。问题：您为什么要首先尝试删除评论？
编辑：我现在看到您正在尝试解析 JavaScript，而不是 PHP。那么，为什么不使用 javascript 压缩器呢？它将删除注释、空格并执行更多操作以使您的文件尽可能小。
This can get complicated fast. There are more uses for
//in strings. If you are parsing PHP code, I highly suggest you take a look at the PHP tokenizer. It's specifically designed to parse PHP code.Question: Why are you trying to strip comments in the first place?
Edit: I see now you are trying to parse JavaScript, not PHP. So, why not use a javascript minifier instead? It will strip comments, whitespace and do a lot more to make your file as small as possible.