________________________________________
Från: Aziz Saleh [azizsaleh@xxxxxxxxx]
Skickat: den 2 juli 2014 16:57
Till: webmaster@xxxxxxxxxxxx
Kopia: php-general@xxxxxxxxxxxxx
Ämne: Re: Re: Pass variable to pcntl_fork child
On Wed, Jul 2, 2014 at 10:41 AM, Jim Giner <jim.giner@xxxxxxxxxxxxxxxxxx>
wrote:
> On 7/2/2014 5:40 AM, Uggla Henrik wrote:
>
>> Hi!
>>
>> I've tried the following code but the $call variable is not available in
>> the pcntl_fork child. Searching the web, I've found posts that claim that
>> all variables defined before pcntl_fork are copied to the child. I've also
>> found posts that claim that no variables are passed/copied to the child.
>> So, which of them is true and how should I correct my code to make it work?
>>
>> regards
>> Henrik
>>
>>
>>
>> $call = str_replace('@@', '&', $_GET['call']);
>>
>> if ($pid = pcntl_fork())
>> {
>> $previousCalls=file("calls.txt", FILE_IGNORE_NEW_LINES |
>> FILE_SKIP_EMPTY_LINES);
>> if (!in_array($call, $previousCalls))
>> {
>> file_put_contents("calls.txt", $call."\n", FILE_APPEND);
>> }
>> }
>> else
>> {
>> function displayUrl($url)
>> {
>> $ch = curl_init($url);
>> curl_setopt ( $ch, CURLOPT_HEADER, 1);
>> curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
>> $curlResult = curl_exec($ch);
>> curl_close($ch);
>> list($headers,$content) = explode("\r\n\r\n",$curlResult,2);
>> foreach (explode("\r\n",$headers) as $hdr)
>> {
>> if ($hdr != 'Transfer-Encoding: chunked')
>> {
>> header($hdr);
>> }
>> }
>> echo $content;
>> }
>> displayUrl($call);
>> }
>>
>> 1 What's a child?
> 2 You must use == in your if condition.
> 3 ??? Why do you have a function defined in your else clause???
>
>
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>
>
The only issue I see in your code is that the parent is not waiting for the
child to close, which can cause zombies. Add:
pcntl_wait($status);
As shown here: http://www.php.net/manual/en/function.pcntl-fork.php
Also you are not checking if the fork failed (-1), shown on the above
example.
Your code with the wait works fine for me (outputs data and records data in
the file).
Does the child echo to the browser that started the php or does the output go somewhere else?
/H
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