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Groups > comp.lang.php > #3821

Re: Prevent unlink(...) warning

From The Natural Philosopher <tnp@invalid.invalid>
Newsgroups comp.lang.php
Subject Re: Prevent unlink(...) warning
Date 2011-11-17 18:29 +0000
Organization albasani.net
Message-ID <ja3jqa$75v$1@news.albasani.net> (permalink)
References <9ikm3eFih4U1@mid.individual.net> <ja38jj$au4$1@news.albasani.net> <9iku5gFi18U1@mid.individual.net>

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Simon wrote:
> On 2011/11/17 05:18 PM, The Natural Philosopher wrote:
>> Simon wrote:
>>> Hi,
>>>
>>> I am having some race condition issues on my server when trying to
>>> delete a file.
>>>
>>
>> what makes you think its a race condition?
> 
> A guess really,
> 
> If I do:
> ...
> if (file_exists($filename))
> {
> 
> and followed by
> ...
>   @unlink($filename);
> }
> 
> And that gives me a
> 
> unlink(/home/xxx/public_html/temp/yyy.zz) [function.unlink]: No such 
> file or directory
> 
> The something between file_exists(...) and @unlink(...) must have 
> removed the file.
> Either that or one of the two functions is not working as expected.
> 

Hmm..what else CAN be deleting that file (unless you are doing the same 
thing twice)?

>>
>> Why do you care about the stat cache?
>>
> 
> As per the doc, http://php.net/manual/en/function.clearstatcache.php, to 
> make sure that file_exists($filename) does return a cached value.
> 
>>>
>>> How can I prevent the warning?
>>>
>> Why prevent it at all?
>>
>> As long as the file is not there when you are finished - why not just
>> unlink it anyway?
>>
> 
> Because the warnings fill my logs and I aim for no warnings at all.
> 

Well, that's reasonable..;-)
> Simon

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Thread

Prevent unlink(...) warning Simon <bad@example.com> - 2011-11-17 17:04 +0200
  Re: Prevent unlink(...) warning The Natural Philosopher <tnp@invalid.invalid> - 2011-11-17 15:18 +0000
    Re: Prevent unlink(...) warning Simon <bad@example.com> - 2011-11-17 19:21 +0200
      Re: Prevent unlink(...) warning The Natural Philosopher <tnp@invalid.invalid> - 2011-11-17 18:29 +0000
  Re: Prevent unlink(...) warning "Álvaro G. Vicario" <alvaro.NOSPAMTHANX@demogracia.com.invalid> - 2011-11-17 18:42 +0100
  Re: Prevent unlink(...) warning Jerry Stuckle <jstucklex@attglobal.net> - 2011-11-17 13:54 -0500

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